Wednesday, March 28, 2018

Mothman


It was the year 1966 when a strange creature surfaced in the small town of Point Pleasant, West Virginia. This creature was described as being at least 7 feet tall, with a humanoid body and a wingspan at least 10 feet in length. Its distinguishing feature? Two red glowing eyes that terrified anyone who saw them. For the next year, this strange moth-like creature continued to terrorize the residents of Point Pleasant. Thus, the legend of the Mothman was born.

Who is Mothman?


Mothman is a large creature thought to inhabit the TNT area located just outside of Point Pleasant, West Virginia. This winged creature first appeared on November 12, 1966 in front of five men who were digging a grave in Clendenin, West Virginia (approximately 1 hour and 20 minutes away from Point Pleasant).


Just three days later, on November 15, two couples going for a night-time drive through the TNT area spotted the creature again. Terrified, they sped off at over 100 miles per hour, but the strange being had no trouble keeping up with them. The couples were chased back into town, where they reported their sighting to Deputy Sheriff Millard Halstead.


The next day, Deputy Halstead and the couples held a press conference at the city courthouse to share the story. It was then that the creature was named ‘Mothman’ because of its strange appearance. Later that night, another famous sighting occurred when Marcella Bennett drove to a friend’s house, which happened to be located inside the TNT area. When she got out of the car with her baby, she was startled as a large creature started to come out of the shadows near her car. Her fright caused her to drop her young child, though she quickly recovered from her shock. She picked up the baby, ran inside, and quickly locked the doors. Mothman climbed onto the porch and peered through the windows at the family, but disappeared before the police arrived.


Over the next few months, Mothman terrorized the town. Nearly 100 people came forward with eyewitness reports between November 1966 and December 1967. During this time, the town of Point Pleasant also experienced paranormal and possibly extraterrestrial activity that was thought to be somehow linked to Mothman.


Characteristics


Physical Description


Those who saw Mothman claim that he was a large, grey, humanoid type creature with massive wings. He is thought to stand between 5 and 7 feet tall with a 10-foot wing span. Mothman’s head is described as being oddly shaped, and sitting close to the creature’s body. Some people even describe him as being headless, with only two eyes protruding above his torso. Additionally, his bright-red glowing eyes are said to be extremely large.


Mothman is also capable of incredible flying capabilities. The couple who saw him the night of November 15, 1966 outside of the TNT area said he was able to keep up with their car at 100 miles per hour without flapping his wings. He is also capable of weaving quickly in between dense forest areas and rising straight into the sky like a helicopter. These flight patterns are beyond our current capabilities with solo-flight devices like jetpacks, causing many people to disregard the possibility of a prank.


Personality


Though many people are divided on the nature of the Mothman, it has been noted that the creature has never harmed a human being during its encounters. This has caused many believers to think that the Mothman means no harm, but instead tries to warn people of impending danger with its presence. This was later evidenced further with the collapse of the Silver Bridge, as many witnesses claimed to see the Mothman on the bridge just before it fell.


Others make arguments for the creature’s evil nature, and cite the disappearance of Newell Partridge’s dog and the ancient legend of Chief Cornstalk as evidence. It is their belief that the Mothman is a creature of danger and chaos who seeks to put humans in dangerous situations.


Origin Theories


Alien Creature


Many people claim to have witnessed UFO sightings and paranormal experiences during Mothman’s time in Point Pleasant, leading many to believe that Mothman could be an extraterrestrial creature. The arrival of the mysterious Indrid Cold (also known as ‘The Grinning Man’) seems to give this theory foundation.


On November 2, 1966 (10 days before the first Mothman sighting), Woodrow Derenberger was driving back to his home in Mineral Wells, West Virginia when he was cut off by what he thought was a car. The vehicle forced him to slow down and then pull over on the side of the road. When he got closer, he realized that the contraption was not a car, but a strange craft that resembled a ‘kerosene lamp chimney.’


A figure then exited the craft and walked to his car. The figure looked very human in appearance and was wearing a coat that was a metallic blue color. He spoke to Woodrow and told him that he meant him no harm. Strangely, the man did not move his lips and his mouth remained fixed in its smile—which later led people to call him ‘The Grinning Man.’ Woodrow realized that the man was speaking to him telepathically.


The man introduced himself as Indrid Cold and told Woodrow that he was from a different galaxy. They conversed for nearly 10 minutes before the strange man returned to his craft. Before he left, he told Woodrow to report his experience to the authorities. Woodrow’s story was published and corroborated by several witnesses who saw him pulled over on the road and talk to a strange man. Several of the witnesses were even able to describe the odd craft.


Others who saw the Mothman were questioned by strange ‘Men in Black’ with pale, translucent skin. They were asked if they had witnessed the Mothman and (if so) what they had specifically seen. Many people reported that they talked in a strange, almost robotic tone that made them nervous. Anyone who was questioned and who had, in fact, seen something related to the Mothman was told to remain quiet on the subject. Several of the witnesses received anonymous threatening phone calls that warned them not to speak about the Mothman. Extraterrestrial enthusiasts claim that the descriptions of these strange men match those of an alien species.


The sightings of these strange men combined with the Mothman leads many to believe that the Mothman may be an extraterrestrial creature that somehow found its way to Earth.


Mutated Monster


Others who believe in the Mothman prefer a more scientific approach. Their theories about the Mothman’s origins are largely influenced by the home of the creature: the TNT area.


The TNT area was constructed during World War II. It was situated near a large wildlife preservation area, ensuring that the area was remote and rarely frequented. The TNT area is comprised of many miles of igloo-type concrete domes. The military used these spaces to create and store weapons of mass destruction. After the war, the site was abandoned. Many toxic substances from the weapons that were stored leaked out into the surrounding forest area.


There are some that believe that the Mothman was affected by these chemicals. They believe that somehow a creature’s DNA was fused with toxic chemicals and somehow mutated into a strange, humanoid creature. Those who believe this think Mothman is our own doing and believe we should deal with the consequences accordingly.


Vengeful Curse


Still others believe Mothman is the embodiment of a 200-year-old curse. This curse can be traced back to the death of Chief Cornstalk and several of his tribesman. Chief Keigh-tugh-gua (which is translated to cornstalk) wanted peace with the American colonists who were trying to occupy the land of seven different Native American nations. Unfortunately, there were many on both sides who opposed this idea.


On November 7, 1777, Chief Cornstalk traveled to a fort in an area called Point Pleasant and tried to engage in peace talks with the colonists to prevent fighting. He insisted that peace was necessary because the British were trying to convince the other nations to join with them to oppose the colonists and that only he and his tribe stood in their way. However, he feared he could not hold them back much longer. Fearful, the colonists took him and his companions prisoner and detained them inside their fort. Chief Cornstalk was considered to be a skilled fighter and military genius and was greatly respected by both sides. By detaining him, the colonists hoped that they could prevent the Native Americans from attacking. Two days later (November 9, 1777) Chief Cornstalk’s son, Ellinipisco, visited the fort to see his father and was also detained.


On November 10, 1777, gunfire was heard near the Kanawha River. When soldiers from the fort went to investigate, they found that two men who had left to hunt for deer had been ambushed by Native Americans. One was dead. Enraged, the soldiers burst into the quarters of Chief Cornstalk and his companions and brutally murdered them as revenge.


As he laid dying on the ground, Chief Cornstalk is said to have uttered a curse on the land in which he died. He spoke the following words:

“I was the border man’s friend. Many times I have saved him and his people from harm. I never warred with you, but only to protect our wigwams and lands. I refused to join your paleface enemies with the red coats. I came to the fort as your friend and you murdered me. You have murdered by my side, my young son…. For this, may the curse of the Great Spirit rest upon this land. May it be blighted by nature. May it even be blighted in its hopes. May the strength of its peoples be paralyzed by the stain of our blood.”

Strange events occurred later in history, such as a lightning bolt that twice destroyed a monument erected in honor of the colonists who fought for the Ohio River Valley. When the Mothman appeared in Point Pleasant, West Virginia, many people were convinced that he was yet another punishment set upon the land from the angered spirit of Chief Cornstalk.


Sightings


The Collapse of the Xiaon Te Dam


Surprisingly, the first sighting of the Mothman may be traced back 40 years before he appeared in Point Pleasant. The beginning of January 1926 opened with the appearance of a strange creature in Southeastern China. The locals described this creature as a ‘man dragon’ that could frequently be seen hovering over the Xiaon Te Dam.


On January 19, 1926, the Xiaon Te Dam collapsed, releasing nearly 40 billion gallons of water into the surrounding farms in the valley. The death toll is estimated to be well over 15,000, though many of records of this disaster have since been destroyed.


November 12 to November 16, 1966


On November 12, 1966, the Mothman was first sighted flying over a cemetery by five men who were digging a grave late at night. They described the creature they saw as man-like figure who could fly.


Three days later, on the night of November 15, 1966, Newell Partridge’s dog started growling at a creature outside. Partridge heard an odd noise and went outside to investigate with a flashlight. He was startled to discover the Mothman. Partridge quickly tried to call his dog back into the house, but the dog (who was a trained hunting dog) darted off into the night. Partridge ran into the house to grab his rifle and go after his dog, but was too scared to go back outside. He never saw the dog again.


The same night, two married couples were taking a late-night drive out of Point Pleasant to the TNT area. They saw a large dog carcass on the side of the road on their way out. Upon reaching the TNT area, they saw a large, winged humanoid with glowing red eyes. The creature chased them back into town and managed to keep up with them even though they were speeding at 100 miles per hour. As they drove back into town, they noticed that the dog’s carcass was gone. They went back to look for it later but it was never found. Many believe the dog’s carcass was Newell Partridge’s hunting dog.


On the night of the 16th, Marcella Bennett was driving to a friend’s house at night. She got out of the car with her baby and was startled as she saw the Mothman rise up next to her car. She was so startled that she dropped her baby. She quickly recovered however, and rushed inside with her child and locked the doors. The Mothman reportedly walked up the steps of the porch and peered into the house with its glowing red eyes. By the time the police arrived to investigate, it had disappeared.


Hundreds of other sightings would be reported during this time, though these are the most notable.


The Collapse of the Silver Bridge


On December 15, 1967 the Silver Bridge collapsed during rush hour traffic. In the hours before the collapse (and even during the event) many witnesses claimed to have seen the Mothman atop the bridge. The collapse was devastating, and 46 people lost their lives as their cars were plunged into the river below. The Mothman was never seen in Point Pleasant again.


The Collapse of the Freiburg Mine


On the morning of September 10, 1978, a group of miners was heading to work in Freiburg, Germany, when they were confronted by a strange man in a trench coat. When they got closer, they realized it wasn’t a man, but a strange creature with huge wings. It appeared to have no head, but had large glowing red eyes on what seemed to be its chest. They stood in the entrance of the mine staring at the creature until it let out a terrifying scream that made them turn and run away from the mine. An hour later, the mine collapsed.


Chernobyl


Throughout the year of 1985, many scientists, workers, and citizens who lived near the power plant in Chernobyl, Ukraine, saw a large bird-like creature with the body of a man flying around the nuclear plant. They claimed this terrifying creature had glowing red eyes.


On April 26, 1986, the creature was spotted before a huge explosion that became one of the most famous nuclear accidents in history. Witnesses also saw the creature flying through the smoke and wreckage after the horrifying event.


9/11 and the Twin Towers


Several days before the terrible attack on September 11, 2001, several people saw a strange flying creature near the Twin Towers. Those who saw the attack report that the same creature was flying parallel to the second plane as it hit the tower.


The Collapse of the I-35 Bridge


At the end of June in 2007, reports of Mothman began surfacing in Minnesota. The reports were concentrated in Minneapolis, the surrounding areas, and the I-35 Bridge itself. After a month of sightings, the bridge collapsed on August 1, 2007. The collapse was devastating, killing 13 people and injuring 145 others.


The Swine Flu Outbreak


Residents in La Junta, Mexico began seeing a large, black, red-eyed creature in 2009. The creature reportedly stalked the town just before the swine flu outbreak that devastated the area. Several witnesses report being terrified by its screaming, and one was even chased by the creature. Local authorities searched for evidence of the creature, but it was never found.


Fukushima


Two witnesses were out near Japan’s Fukushima power plant in March 2011 when they heard a loud screech. They turned back to see a creature sitting on top of the Fukushima plant. It suddenly unfurled its wings and began to fly towards them. They were horrified by a pair of glowing red eyes that were looking right at them, but the creature disappeared soon after.


Shortly after the creature appeared to them, Fukushima was devastated by an earthquake and the nuclear power plant the witnesses walked by exploded.


Related Characters


In ancient lore and mythology, there are many mentions of doom prophets and winged creatures that match the description of Mothman.


Assyrian mythology speaks of a demon named Pazuzu. He was the king of the demons of the wind and represented the southwest wind. He is often described as having a combination of human and animal parts, as well as having massive wings. However, despite being evil in nature, Pazuzu protects humans from plagues and misfortune.


Greek mythology also gives us Thanatos. Thanatos is a large winged god that personifies death. He appeared to humans when the time they had been given by the Fates had run out, and carried them to the Underworld.


Explanation of the Myth


As sightings of this cryptid continue into present day, many people wonder if the Mothman is more than a myth that haunts the town of Point Pleasant. There seems to be no consensus on whether the creature means harm towards human, though it can be agreed that sightings of the Mothman seem to precede tragedies and loss of life.



Mothman

Tuesday, March 27, 2018

Genotypic Ratio

The genotypic ratio shows the number of times a characteristic of an organism will be seen in the offspring when genes for certain traits are crossed. This more easily understood by using the Punnett square method and a basic monohybrid cross as shown in Figure 1.


Punnett square mendel flowers

Figure 1: The image above shows a Punnett square monohybrid cross of male and female pea plants that are both heterozygous dominant for purple. The genotypic ratio for this cross is written 1:2:1.


In animals and plants, each gene has 2 alleles or variations, one from each parent. When male and female gametes come together (cross) all the phenotype variations for the offspring are predicted using the Punnett square grid. The pairs of alleles for male and female are plotted individually on a grid. Then, each square in the grid is filled in with the corresponding combinations of alleles coming from the parents.


To find the genotypic ratio, count the number of times each combination appears in the grid, starting in the upper left square. The example in Figure 1 below is crossing alleles for just one trait, flower color. Larger Punnett squares are used to calculate genotypic ratios for more than one trait as shown in Figure 2.


Punnett square 3

Figure 2: The image above shows a Punnett square for figuring out the genotypic ratio using 4 traits from each parent. Reading the grid starting in the upper left square, the genotypic ratio is 1:2:2:1:4:1:2:2:1.


References



  • Wilson, D. (2012). Punnett squares. Retrieved from lecture notes online. Website: http://sctritonscience.com/Wilson/biology_punnett_squares.htm



Genotypic Ratio

Genotype vs. Phenotype

The genetic makeup of an organism is called its genotype and its observable traits are its phenotype. In other words, what a person looks like is the result of his or her DNA. A great example that explains this concept is Gregor Mendel’s experiments with true-breeding yellow and green pea plants (P1). The phenotype of the plants is their color, yellow and green. When Mendel crossed these two plants, all the offspring (F1) were yellow. But the green color was not lost as it showed up again in the next generation (F2). Mendel didn’t know it at the time, but the underlying genotypes of the green and yellow plants were responsible for the traits seen in the F1 generation.


Both the green and yellow P1 pea plants had identical alleles for the gene that controls their color, meaning they were homozygous. When two green or two yellow plants were bred together, all the offspring of the green plants were green, and all the offspring of the yellow plants were yellow. However, when a green plant was crossed with a yellow plant, all the F1 offspring were yellow. This is because the F1 generation was heterozygous for the color trait, meaning they had different alleles for color. And, of the two alleles for the color gene, yellow was dominant making all the F1 plants yellow. The pea plant alleles in F2 would have to be homozygous recessive for the plant to be green


Comparison Chart



























GenotypePhenotype
The observable traits of an organism?NoYes
The genetic makeup of an organism?YesNo
How is it observed?DNA sequencing, PCR assay, if needed (see image below)By looking at the organism
Refers to the information coded on allelesYesNo
Examples include hair color, eye color, heightNoYes
Is it inherited?Partially, one allele from each parentNo
What does it contain (show)?All heredity information for the organism even genes that are unexpressed.Only the genes that are expressed.

Polymerase chain reaction

The image above shows how the polymerase chain reaction (PCR) assay works to amplify small samples of DNA for genetic analysis. Genetic analysis reveals a person’s genotype which codes for their observable characteristics, aka their phenotype.


References



  • Genotype vs Phenotype. (n.d.). In Diffen.com. Retrieved from https://www.diffen.com/difference/Genotype_vs_Phenotype

  • OpenStax. (May 20, 2013). Mendel’s Experiments in Heredity. In Biology. (Chapter 12). Retrieved from http://cnx.org/content/col11448/latest/



Genotype vs. Phenotype

Common Questions about Genetic Variation

Which type of selection tends to increase genetic variation?


Disruptive selection, also called diversifying selection, increases genetic variation. In this type of selection, extreme phenotypes are favored over intermediate ones and this often drives the formation of new species. Disruptive selection is seen in species such as lobsters where the males have multiple mating strategies depending on their size. Large, dominant alpha males get access to females using their strength, while on the other end of the size spectrum, small males are opportunistic and sneak in and mate with females. The medium-sized males fall in between—not large enough to fight for the right to mate and not small enough to sneak in. These males are selected against due to disruptive selection, driving the formation of more large and small male lobsters.


What are two main sources of genetic variation?


Two main sources of genetic variation are random mutations and genetic recombination. Mutations are changes in DNA coding that effect an organism’s physiology, behavior, and/or appearance. All mutations are random which means they just happen and are not in response to what an organism “needs” or what would be useful to it. Also, mutations in the DNA of somatic (body) cells don’t affect evolution like mutations to the DNA in sex cells. Overall, mutations are rare and most of them are harmful or do nothing. The main causes of mutations are chemicals, radiation, and mistakes that happen when DNA is copied during cell division.


Recombination, or the “shuffling” of genetic material creates variation during the process of crossing over which happens in meiosis (see the next question).


What is the relationship between meiosis and genetic variation?


When gametes are made during meiosis, a process called crossing over happens in prophase I. During this process, 4 sister chromatids (2 from each parent) line up parallel to each other in a formation called a tetrad. Male and female chromatids cross in certain areas, forming a structure called a chiasma. The chiasma then breaks apart, and the broken DNA segments from the maternal chromatids are joined into the DNA of the paternal chromatids and vice versa. More information on the relationship between meiosis and genetic variation is in the answer to the question below “How does sexual reproduction lead to genetic variation?”


Why is genetic variation important?


Without genetic variation, some of the basic mechanisms of evolution can’t operate and organisms will fail to adapt and eventually die. Genetic variation allows natural selection to occur, and this increases the ability of organisms to survive changes in their environment and ultimately reproduce. Having offspring means that adaptive changes in alleles will be carried on to the next generation.


How do mutations lead to genetic variation?


In sexually reproducing organisms, mutations in gametes can cause genetic variation. This is a rare occurrence and most often mutations are lethal or don’t have any effect. Mutations are random and don’t happen in response to environmental changes. Therefore, they are not adaptive, but they are important because they can bring out variations that are tested in the environment. If a mutation turns out to be advantageous for a species that variation is inherited by the offspring and helps ensure the survival of the population.


How does random fertilization add to the genetic variation?


Random fertilization is the concept that all gametes are created equal when it comes to their chances of being able to reproduce. Therefore, random fertilization doesn’t create new genetic variation, but it does give all gametes the same opportunity to pass on their DNA. This, in turn, preserves the variation that the gametes carry. If there was no random fertilization, this would mean that some sperm and eggs have better chances than others of fertilizing or being fertilized. Over generations, the gene versions with better chances are favored and the other variations die out. This would leave just one version of a gene or set of genes, decreasing the amount of genetic variation.


How does sexual reproduction lead to genetic variation?


Genetic recombination is the main way that sexual reproduction leads to genetic variation. Recombination happens in three ways: through the separation of genes during meiosis, the random coming together of genes during fertilization, and via the process of crossing over during meiosis.


Meiosis results in 4 daughter cells, each having half the number of chromosomes (haploid) as the parent cell and which are genetically distinct the parent cell. Also, during meiosis there is an exchange of genetic information between the maternal and paternal chromatids through the process of crossing over, creating more variation. The concept of random fertilization levels the playing field and gives all sex cells an equal chance of being successful in passing on their DNA, further increasing genetic variation.


References



  • Genetic Variation. (n.d.). In Wikipedia. Retrieved March 21, 2018 from https://en.wikipedia.org/wiki/Genetic_variation

  • Genetic Variation. (n.d.). In Understanding Evolution. Retrieved from https://evolution.berkeley.edu/evolibrary/article/evo_17

  • Population Genetics. (n.d.). In Lumen Learning, Boundless Biology. Retrieved from https://courses.lumenlearning.com/boundless-biology/chapter/population-genetics/



Common Questions about Genetic Variation

Common Questions about Genetic Variation

Which type of selection tends to increase genetic variation?


Disruptive selection, also called diversifying selection, increases genetic variation. In this type of selection, extreme phenotypes are favored over intermediate ones and this often drives the formation of new species. Disruptive selection is seen in species such as lobsters where the males have multiple mating strategies depending on their size. Large, dominant alpha males get access to females using their strength, while on the other end of the size spectrum, small males are opportunistic and sneak in and mate with females. The medium-sized males fall in between—not large enough to fight for the right to mate and not small enough to sneak in. These males are selected against due to disruptive selection, driving the formation of more large and small male lobsters.


What are two main sources of genetic variation?


Two main sources of genetic variation are random mutations and genetic recombination. Mutations are changes in DNA coding that effect an organism’s physiology, behavior, and/or appearance. All mutations are random which means they just happen and are not in response to what an organism “needs” or what would be useful to it. Also, mutations in the DNA of somatic (body) cells don’t affect evolution like mutations to the DNA in sex cells. Overall, mutations are rare and most of them are harmful or do nothing. The main causes of mutations are chemicals, radiation, and mistakes that happen when DNA is copied during cell division.


Recombination, or the “shuffling” of genetic material creates variation during the process of crossing over which happens in meiosis (see the next question).


What is the relationship between meiosis and genetic variation?


When gametes are made during meiosis, a process called crossing over happens in prophase I. During this process, 4 sister chromatids (2 from each parent) line up parallel to each other in a formation called a tetrad. Male and female chromatids cross in certain areas, forming a structure called a chiasma. The chiasma then breaks apart, and the broken DNA segments from the maternal chromatids are joined into the DNA of the paternal chromatids and vice versa. More information on the relationship between meiosis and genetic variation is in the answer to the question below “How does sexual reproduction lead to genetic variation?”


Why is genetic variation important?


Without genetic variation, some of the basic mechanisms of evolution can’t operate and organisms will fail to adapt and eventually die. Genetic variation allows natural selection to occur, and this increases the ability of organisms to survive changes in their environment and ultimately reproduce. Having offspring means that adaptive changes in alleles will be carried on to the next generation.


How do mutations lead to genetic variation?


In sexually reproducing organisms, mutations in gametes can cause genetic variation. This is a rare occurrence and most often mutations are lethal or don’t have any effect. Mutations are random and don’t happen in response to environmental changes. Therefore, they are not adaptive, but they are important because they can bring out variations that are tested in the environment. If a mutation turns out to be advantageous for a species that variation is inherited by the offspring and helps ensure the survival of the population.


How does random fertilization add to the genetic variation?


Random fertilization is the concept that all gametes are created equal when it comes to their chances of being able to reproduce. Therefore, random fertilization doesn’t create new genetic variation, but it does give all gametes the same opportunity to pass on their DNA. This, in turn, preserves the variation that the gametes carry. If there was no random fertilization, this would mean that some sperm and eggs have better chances than others of fertilizing or being fertilized. Over generations, the gene versions with better chances are favored and the other variations die out. This would leave just one version of a gene or set of genes, decreasing the amount of genetic variation.


How does sexual reproduction lead to genetic variation?


Genetic recombination is the main way that sexual reproduction leads to genetic variation. Recombination happens in three ways: through the separation of genes during meiosis, the random coming together of genes during fertilization, and via the process of crossing over during meiosis.


Meiosis results in 4 daughter cells, each having half the number of chromosomes (haploid) as the parent cell and which are genetically distinct the parent cell. Also, during meiosis there is an exchange of genetic information between the maternal and paternal chromatids through the process of crossing over, creating more variation. The concept of random fertilization levels the playing field and gives all sex cells an equal chance of being successful in passing on their DNA, further increasing genetic variation.


References



  • Genetic Variation. (n.d.). In Wikipedia. Retrieved March 21, 2018 from https://en.wikipedia.org/wiki/Genetic_variation

  • Genetic Variation. (n.d.). In Understanding Evolution. Retrieved from https://evolution.berkeley.edu/evolibrary/article/evo_17

  • Population Genetics. (n.d.). In Lumen Learning, Boundless Biology. Retrieved from https://courses.lumenlearning.com/boundless-biology/chapter/population-genetics/



Common Questions about Genetic Variation

Gastrulation in Frog Embryo, Chick Embryo and Sea Urchin

Overview of Gastrulation


Gastrulation is a phase in the embryonic development of animals where the blastula reorganizes itself into a gastrula. It does this by folding itself inward as shown in Figure 1. This is a critical point in development because it is when the embryo transforms itself from a hollow sphere made from a single layer of cells into a multi-layered structure. The layers are called the primary germ layers; the endoderm, ectoderm, and mesoderm (Figure 2). Each species has its own uniqueness when it comes to the process of gastrulation, but there are similarities that span the entire animal kingdom. Frogs, chickens, and sea urchins are 3 species most studied by developmental biologists and comparative embryologists.


Gastrula transformation

Figure 1: The image above shows the process of transformation from a single-celled zygote to a gastrula.


Process of gastrulation

Figure 2: The image above shows how gastrulation changes the number of cell layers from one to three.


Gastrulation in Sea Urchins


Gastrulation in sea urchins is used as a starting point for understanding the process, as it is less complicated or more “simple” compared to other species, and the process only takes about 9 hours. In the first step of gastrulation, primary mesenchyme cells use chemical cues inside the blastula to migrate to the inside of the sphere where they will eventually fuse and form the larval skeleton made of spicules formed from calcium carbonate. Then, the archenteron (primitive gut) forms as the blastocyst invaginates creating the blastopore. The archenteron elongates and eventually fuses with the epithelial cells on the surface to form the mouth. The anus forms at the spot where the invagination started on the surface. In sea urchins, all three primary germ layers originate from the same outside layer of cells.


Gastrulation in Frogs


Gastrulation in the frog is similar to the sea urchin, but it’s more complicated. One of the main differences is that the blastula is not hollow but is filled with yolk cells. Also different, is that the cells of the blastula in the frog form the ectoderm or endoderm while the mesoderm is made from the yolk cells inside. Another interesting aspect of frog gastrulation is that the blastopore forms a “lip” exactly 180 degrees opposite from where the sperm entered the egg. The lip is the point where the cells begin to turn and migrate inward, forming the blastopore.


Gastrulation in Chickens


One of the unique features of chick gastrulation is the cellular rearrangement that occurs at the posterior end of the blastula and forms the primitive streak, a thickening of the tissue. The cells making up Hensen’s node at the end of the primitive streak elongate across the blastula. Later, the cells of Hensen’s node regress, paving the way for the formation of the central nervous system. In the chick embryo, the cells of the ectoderm go on to form the skin and neural tissue, endoderm cells line the respiratory and gastrointestinal tracts, and the kidneys, circulatory system and skeleton are made from the mesoderm cells.


References



  • DeRuiter, C. and Doty, M. (2011). Gastrulation in Gallus gallus (Domestic Chicken) . Retrieved from https://embryo.asu.edu/pages/gastrulation-gallus-gallus-domestic-chicken

  • Gastrulation [PDF Document]. (2011). Retrieved from Biology 205 Online Lecture Notes, Web Site: http://courses.bio.unc.edu/2011Spring/Biol205section7/DB2011notes/DB4notes.pdf



Gastrulation in Frog Embryo, Chick Embryo and Sea Urchin

Genetic Drift vs. Gene Flow vs. Natural Selection

Genetic drift, gene flow, and natural selection may sound similar or even confusing to some. All three are mechanisms in the evolutionary process that have to do with alleles and/or gametes, but there are several significant differences.


Discussions about genes and natural selection usually include the term allele. An allele is just one version of a gene found at the same place (locus) on a chromosome. An example of an allele is the color of a bird’s feathers. In sexually reproducing organisms, alleles occur in pairs because the offspring receive one from each parent.


Genetic Drift


In genetic drift, alleles change frequency within a population due to random sampling. As a result, it does not produce adaptations. Two mechanisms cause genetic drift. The first is the bottle effect. This is genetic drift in a population after it has gone through a catastrophic event like a flood. The bottleneck happens when the allele frequency of a main trait in the original population is reduced because so many individuals carrying the allele have died. This causes most of the surviving population to die off, leaving a few random individuals as survivors. The other mechanism is called the founder effect. This is when a few members of a population break away and create their own group. Because of the random sampling that created the new group, the allele frequency can dramatically shift depending on the selective pressures place on the individuals.


Gene Flow


Gene flow differs from genetic drift because it is the transfer of alleles or gametes from one population to another. It happens when a population migrates or becomes geographically isolated. This is different from the genetic drift seen with the founder effect where the new group is formed in an area that does not have an existing population.


Natural Selection


Natural selection is like genetic drift but with one major difference—it’s not random. And unlike genetic drift which can be helpful, detrimental, or have no effect, natural selection represents only positive change/adaptation. Also, natural selection is influenced by changes in environmental conditions while genetic drift is random and based on luck. One major way gene flow is different from natural selection is that gene flow helps keep alleles in a population homogenized while natural selection increases genetic variation and always moves toward creating new species.


References



  • A Quick Genetic Drift vs Gene Flow vs Natural Selection Comparison. (n.d.). In Biology Wise. Retrieved from https://biologywise.com/genetic-drift-vs-gene-flow-vs-natural-selection



Genetic Drift vs. Gene Flow vs. Natural Selection

Monday, March 26, 2018

Hesiod



Fast Facts:

  • Pronunciation: heh-see-od or he-sea-odd

  • Origin: Boeotia, a district in central Greece

  • Role: Mortal

  • Occupations: Poet, Farmer

  • Also known as: Hesiodus, Hesiodos

  • Offspring: Stesichorus



Who Is Hesiod?


Considered the first didactic poet, Hesiod’s poems were philosophical in nature, though easy to understand. His epic poems were used to teach people about a variety of topics, including working life, agriculture and the Greek gods. Because of this, Hesiod’s works are fundamental historical artifacts.


Family


After the death of his father, Hesiod was involved in a bitter dispute with his brother, Perses. This was in regards to the property left behind by their deceased father. Unfortunately for Hesiod, Perses won both disputes, though it is important to know that each alleged dispute was decided by the same judges. However, the account of this property dispute comes from Works and Days, a text which scholars look upon with caution as an autobiographical account of Hesiod’s life.


Brief History


Due to abject poverty, Hesiod’s father crossed the sea from Cyme in Aeolis (modern western Turkey) to Boeotia, more specifically at the bottom of Mount Helicon. The top of Mount Helicon was considered to be where the Muses (the goddesses of inspiration) resided. They are said to have visited Hesiod and ordered him to compose poetry. Hesiod’s poetry composed a family tree of the Greek gods based on the conception of creation. For example, the Earth was “yawned” into existence by Gaea, the goddess of the Earth, birthing mountains, heaven, and sea, chaos, order, work, life, economics, and agriculture. Not only was his work instructional for religious purposes, it also contained detailed agricultural knowledge due to Hesiod’s background as a farmer and shepherd. Hesiod believed that work was the purpose of man and that each man needed to work in order not only to survive, but to also live a satisfying life. Hesiod was one of the first Western poets who compiled his work in a written manner as before him, nearly all epic poetry was passed down through an oral tradition. This is because the Greek alphabet was composed far later than the language was spoken. The written word revolutionized what was possible with epic poetry and paved the way for poetry to change from being a tradition recited using only memory.


Characteristics


Hesiod would memorize his poems by reciting heroic songs while he tended to his sheep. He believed that his poetic gifts were given to him by the Muses while he was working hard on his land. According to legend, Hesiod was handed a poet’s staff and blessed with a poet’s voice by the Muses, and he used this voice to create his epic poems. As the Muses traditionally lived at the top of Mount Helicon, it is possible that this was one of the reasons why Hesiod became a poet in the first place. Due to the geographical significance of his location, it is possible to speculate that Hesiod was inspired by the spirit of the land and the myth that was enveloped in it. This may have led to the blending of concepts that make up the works of his epics.


Literature


The time of Hesiod’s literature is disputed, though it is generally agreed by scholars that it originated around 700 B.C.E., shortly after Homer’s. It is noteworthy that the reason dates of works are disputed—as well as dates of birth in Ancient Greece—is because there was no chronological dating system at that time.


Hesiod is credited with at least two epic works. Although in the past he has been credited with more, it is widely accepted that those works were created by poets from the same school of thought as Hesiod and not actually by Hesiod himself. One of the epics Hesiod composed is called Theogony, which means the genealogical account of the gods. The word theo comes from the Ancient Greek words theos meaning gods, and gony, which comes from the Latin word gonia. Gonia itself comes from the base of the Ancient Greek word gignesthai, which means “to be born.” Also attributed to Hesiod is another epic, Works and Days, the first recorded instance of didactic poetry. Didactic poetry is poetry which instructs or informs.


One example of work previously attributed to Hesiod but now disputed is The Shield of Heracles. Hesiod is also considered the earliest author from mainland Greece whose work still exists in its original form. Some of Hesiod’s works include work from other poets, notably the Precepts of Chiron, the Melampodeia, the Aigimios, the Ornithomanteia, the Astronomy, and the Catalogues of Women.


Hesiod’s works of literature are often compared with those of Homer, author of the Iliad and the Odyssey. Although Hesiod’s poems are considered epics—as Homer’s poems are—they are considered so for fundamentally different reasons. Unlike Homer’s work, Hesiod’s work is considered epic not because of its length, but because of its language. Hesiod’s was more accessible, down-to-earth, and practical, which led to its widespread appeal. This makes it a crucial historical artifact for a chronicled life of workers in Ancient Greece, details about agriculture and the nature of work, as well as a meticulous account of the relationship between the Greek gods. Though Theogony is considered complex and often confusing, it reflects an unrivaled account of the intricate relationship between divine beings. It is important to consider that—as the poet is seen to be gifted because of the Muses—poetry would be an exercise to please the gods. This shapes the style and content of the poetry as much as Hesiod’s relationship with the self, land, cosmos, and work.


Explanation of the Myth


According to myth, Hesiod and Homer engaged in a poetry contest. This arose from an extract from Works and Days where Hesiod won a competition in Chalcis in Euboea at the Funeral Games. This led to Hesiod being awarded a bronze tripod by the sons of Amiphidamas—a prize he then allegedly gifted to the Muses of Mount Helicon. This account led to later rumors of a poetry contest between Hesiod and Homer, though this is generally considered false, as scholars tend to agree that Hesiod and Homer never crossed paths. It is important to consider that the Ancient Greeks generally saw inspiration as a divine or semi-divine practice, so poetic excellence was generally seen as a divine work. This is evident from several factors: the fact that Hesiod believed his poetic gift came from the Muses, that his work revolved around the Ancient Greek gods, and that he gifted his award to the Muses. This belief in the Muses and the gods reflects the cultural belief of this time in polytheistic Ancient Greece.


Death


After he lost his alleged second lawsuit to Perses, Hesiod fled to Naupactus, where he was allegedly murdered by the sons of his host in Oeneon because he seduced a maiden. It is claimed that their offspring was the lyric poet Stesichorus, the first of his kind in the West.


On the order of the Delphic Oracle, Hesiod’s bones were taken to Orchomenus, where a monument to him was constructed in the marketplace.



Hesiod

Typhon


Who is Typhon?


Huge, venomous, fire-breathing, and as mean as they come, Typhon is the most feared monster in all of Greek mythology. Soon after his birth, he challenged Zeus for the right to rule over all the gods — and he very nearly won!


Characteristics


Physical Description


The ancient Greek poets all painted a different picture of Typhon and for good reason. The only details they can agree on are that he was immeasurably large — “of such bulk that he out-topped all the mountains, and his head often brushed the stars” — and unimaginably hideous, worse than your most terrifying nightmare. Being immeasurable and unimaginable, Typhon was not an easy monster to describe!


Among other horrors, Typhon has been given: a hundred snake heads with eyes that shoot fire; leopard, lion, bull, boar, bear, dragon, and wolf heads; coils of snake tails below his waist; hundreds of arms and hands, with snakes for fingers; hundreds of wings spouting up all over his body; and one pair of huge dragon wings.


Over time, Greek artists merged and edited all of these poetic descriptions until they had reached a conventional look for Typhon. From the waist up, he was a wild giant with bulging muscles, a long, filthy beard, and shaggy hair. His nose grew out like a dog’s snout, his ears were pointed like a donkey, and his eyes flashed fire. Although he was usually drawn with just two of his hundreds of arms, his fingers were kept unnaturally long, suggesting serpents. A pair of feathery wings unfurled from his massive shoulders. Below the waist, Typhon had two serpent tails in the place of legs. His tails were usually drawn with vibrant red spots and a twisting, tangled look.


Personality


The Greek poets described Typhon as “terrible, outrageous, and lawless,” “fell and cruel,” “strong and tireless,” and “the greatest plague on men and gods.” Without a doubt, he was the biggest bully in Greek mythology—and there wasn’t a kind or merciful bone in his body.


For Typhon, destruction was a game and deformity was beautiful. He reduced villages to rubble for no reason, slaughtered men and attacked gods just because. He was attracted to dark places and monstrous characters—like his wife, Echidna—but even the places and people whom he liked couldn’t gain his loyalty. He spent his life on a solitary path of destruction.


Special Abilities


With so many monstrous parts packed into one body, Typhon never ran out of ways to attack. He could use his serpent heads or fingers to spit deadly venom at you. His dragon heads—or his own terrible eyes—could reign fire down upon you. All the while, his various other heads, from leopard to boar, would daze you with “his warcry, the cries of all wild beasts together” which was so loud that it echoed through the mountains and loosened boulders.


And don’t forget Typhon’s size. He was so large that his footsteps caused earthquakes. His voice was fiercer than thunder. He could use his mighty arms to break open mountains, hurling boulders and molten rock down on the villages below.


Typhon’s famous showdown with Zeus—the prize being no less than the Olympic throne—revealed the full extent of his abilities:

“from the flame of the monster, from his blazing bolts and from the scorch and breath of his storm-winds, all the ground and the sky and the sea boiled, and towering waves were tossing and beating all up and down […] and a great shaking of the earth came on.”

Eventually, Zeus got the upper hand, but even in death, Typhon was deadly:

“Typhon crashed, crippled, and the gigantic earth groaned beneath him, and the flame from the great lord […] ran out along the darkening and steep forests of the mountains […], and a great part of the gigantic earth burned in the wonderful wind of his heat and melted.”

When Zeus saw he had won, he threw Typhon into an endless pit, called Tartarus. Still, volcanic eruptions and winds that swept for hundreds of miles withering flowers and crashing ships, came from that pit where Typhon lay for hundreds of years.


Family


Parents


Many legends swirl around the birth of Typhon.


Some legends say that Gaia, the primordial earth-goddess, was angry when Zeus destroyed her children, the giants. She decided she would have another child, a giant of giants, to replace the children she had lost, but since Zeus had also defeated her husband, the titan Cronus, she needed a new lover. She turned to Tartarus, “the pit,” and with the help of Aphrodite, they were able to produce a child: Typhon.


Other legends claim that Hera had a fit of rage after she discovered yet another one of Zeus’s love-children. She declared that she would have a child without Zeus, since he had so many children without her, and that the child would be even mightier than Zeus himself. Some legends say that Gaia heard her cry and sympathized with her, so she made Hera pregnant with Typhon. Other legends say that Hera went to Cronus, and he gave her two stones covered in his own semen. Hera buried them, and after many months, one grew up as Typhon.


Children


For a bride, Typhon took Echidna, a monstrous snake-woman who lived in a cave and devoured men who happened to pass by. Of course, Echidna didn’t have much luck with devouring Typhon, so she accepted him as a mate instead and bore him many “fierce offspring,” including the Lynean Hydra, the Chimera, the Sphinx, Cerberus, the Gorgons, and Scylla. Together, Typhon and Echidna became as “the father and mother of all monsters.”


Cultural Representation


Origin


Typhon was first mentioned in Homer’s Iliad, which was written around the 8th century BCE, but he wasn’t fully fleshed out until Hesiod wrote his Theogony in the 7th century. Thereafter, countless Greek and Roman poets tackled this great monster; Pindar, Virgil, Ovid, Nonnus, and Seneca all contributed to his legend.


But it’s possible that Typhon has an event older ancestor. The Greeks themselves pointed out that there was a connection between their monstrous Typhon and the Egyptian god Set, who also sparked terrible battles when he tried to seize control from the supreme god.


Modern Appearances


During Greek times, Typhon was connected with all kinds of natural disasters, from droughts to tsunamis to wildfires and volcanic eruptions. Appropriately, his name lives on in today’s culture as dreaded natural disaster: the typhoon.


Typhon has also showed up in many modernized versions of Greek mythology, including Clash of the Titans and Percy Jackson.



Typhon

The Fates (Moirai)


Who Are the Fates?


The Fates are three female deities, sisters, who control the fate and longevity of man and the gods. They are also known as the Moirai, which means parts or shares and lived on Mount Olympus in Zeus’ palace. Clotho was the sister who spun the thread of life. Lachesis measured the thread and metered out a person’s allotted lifespan, and Atropos determined how each person would die and cut their life thread with her shears.


Since the sisters were closely associated with death, they were often related to the Erinyes; also crones who took vengeance on anyone that broke an oath, and Keres; female spirits of death. In Roman mythology, the Fates were known ironically as the Parcae, meaning the sparing ones. The concept of fate they represent is comparable in other cultures to concepts such as Egyptian Maat; a sense of balance, justice, and truth, or the Vedic Rta; commonly understood as the cosmic order.


Origin


In Hesiod’s Theogony, the poet depicts the Moirai as daughters of Themis and Zeus. He describes them as weaving the thread of life, which may be imbued with things such as sadness, fortune or perhaps many offspring. In Homer’s works, he refers to parts as moira and in the Odyssey links a personification of moira to the spinners.


Legends and Stories


Once a baby was born, three days would pass before the Moirai would visit to determine the destiny of the infant. They would spin out the baby’s life thread according to the will of the gods. Though the crones determined fate, man’s fate was not wholly unchangeable. Zeus could save those already on the cusp of their fate. Man could also influence their own fate, to a degree. The Fates were said to control the destiny of the Gods too, possibly even Zeus, making them feared for the power they yielded.


Zeus’ son, Heracles, sought the help of the Moirai when Chiron, an immortal centaur was wounded in battle. He was accidentally struck by an arrow from Heracles. Chiron was in unbearable pain though as the arrow was poisoned with the venom of the nine-headed serpent, Hydra. The Moirai allowed Chiron to give up his immortality whereupon he joined the other gods on Mount Olympus.


Worship


The Fates had a cult following in places like Thebes and Sparta. They were also worshiped during festivals and had a temple dedicated to them in Sparta.


Appearance


The Fates are described as three ugly, old women. Clotho is depicted with a spindle in her hand, Lachesis carries a staff and Atropos holds a wax tablet, a scroll, a pair of scales or something to cut with, usually her dreaded shears to cut one’s life thread. They are sometimes depicted with crowns and scepters too.


Other Goddess Triads


The Fates are one of a myriad of goddess triads in mythology. The Horae are another example of a goddess triad, worshiped by the Greek in connection with justice. The Norse worshiped the Norns, who ruled over men’s destiny and that of the gods, and the Celts, the Morrigan who decided on the fate of those in battle. The popularity of worshiping a triad of female goddesses may align to ancient beliefs of worshipping a moon goddess in her three forms – as a maiden; new moon, an adult woman; full moon, and a crone; the old moon. The Norse also believed in the concept of fate and its connection to weaving and magic through the Norns, as the Greeks did with the Moirai. In Anglo-Saxon, the concept of fate is referred to as wyrd. This is connected to magic and witchcraft in Anglo-Saxon mythology too.


Modern Influence


The modern English word fate comes from the original name of the Greek goddesses of fate. Though fate was viewed as the purview of witches and mystics or as an almost inevitability in ancient mythologies, modern times are not without those who seem to accede to their own fate; with no drive to achieve anything more than suffering and its frequent accompaniment – the self-declared right to complain about the life they’ve been dished out.



The Fates (Moirai)

Satyr


What is a Satyr?


Satyrs are the original party animals. These Grecian creatures were born “a tribe of the helpless and worthless,” but they soon found their place in the world: entertaining Dionysus, the god of wine, with their music, dancing, and wild merry-making.


Characteristics


Physical Description


Satyrs are known for their animalistic behavior, and their appearance goes hand-in-hand with their personality.


In early Greek art, Satyrs are part-man and part-horse or donkey. They have heads full of thick curls, beards that fall down to their chests, and nubby horns peeking out of their curly locks. Their noses are short and round while their ears are long and pointed. A horse or donkey tail sprouts from their lower back and sweeps down to the ground.


Some Satyrs varied slightly in appearance. The Panes, for example, had goat legs instead of horse features. The Silenis were thinner and older, with bald heads. And the adorable Satyriskoi were just young boys, lacking the beards and bulging muscles of their older companions.


In late Greek art, Satyrs began to appear even more animalistic. In addition to having a horse’s tail, they began to have horse or goat legs as well. Today’s images are similar—the horsier the better!


Personality


The Satyrs are attendants of Dionysus, the Greek god of wine and celebration, and their rambunctiousness makes them perfect for the role. They revel in wine, music, dancing, and above all else, women. Their parties usually turn into frenzies, since they just can’t seem to control their high spirits. Impulse control simply doesn’t exist among Satyrs.


From a distance, a Satyr party might seem like the place to be, but get too close and you’ll regret heeding their pipes. Satyrs are wild and reckless, a combination that can quickly spin into destruction. They have been known to rip apart villages that stood in the path of their parades, trampling crops, looting food, and generally making a nightmarish mess.


But undoubtedly, Satyrs pose the biggest threat to women. They are famous for their insatiable lust, and they won’t take no for an answer. These muscly, drunken creatures have been responsible for raping countless nymphs, as well as beautiful mortals.


Special Abilities


Still, there is some method to the Satyrs madness. They are extremely talented with musical instruments, and they can produce such hypnotic tunes on their pipes and flutes that other people—and even animals—are forced to join their revelry. Tamborines and brass drums can also be heard in their musical melee. They are also prolific dancers, with some of their dances serving ritualistic purposes that help crops grow or appease the gods.


Cultural Representation


History


Satyrs first appear in Greek literature around the 8th century BCE. Hesiod, Ovid, Strabo, Aesop, Virgil, Cicero, and Nonnus all wrote about the wild parties, brawls, and affairs of the Satyrs. Satyrs are also extremely popular in Athenian red-figure pottery. During the 5th and 6th centuries BCE, countless red-figure designs included Satyrs playing their flutes or manhandling huge wine skins.


Around the 5th century BCE, Satyrs also became extremely popular in theatre. During dramatic plays, a chorus of actors dressed as Satyrs would provide commentary on the drama, often for comic effect. One complete Satyr play, Cyclops by Euripides, still exists today. Fragments of Satyr-plays written by Sophocles and Aesop have also been found.


By the time Satyrs were handed down from the Greeks to the Romans, they had begun to be confused with other party animals. The Romans replaced Satyrs with fauns, woodland creatures with legs like a goat. Fauns carried on the Satyr’s merry-making, but they weren’t quite as robust as their ancestors. They had a more childlike appearance and more connections to nature and wildlife than to agriculture and wine.


Modern Appearances


The spirit of the ancient Satyr lives on in today’s fantasy literature—although they are more commonly referred to by their Roman name, faun.


These musical troublemakers can be found in everything from CS Lewis’s Chronicles of Narnia to Walt Disney’s Fantasia to the role-playing game Dungeons and Dragons.



Satyr

Saturn



Fast Facts:

  • Pronunciation: sat-urn

  • Origin: Ancient Roman religion

  • Role: God of time, wealth and agriculture

  • Parents: Father – Caelus. Mother – Tellus

  • Wife: Ops

  • Symbols: scythe



Who is Saturn?


Saturn was a Roman god of Agriculture who ruled in a Golden Age, a time of peace and prosperity among men. He is viewed as the Roman version of the Greek god, Cronus – god of the universe. Scholars illustrate the similarity between Roman and Greek mythology, with the gods having different names, but the roles and legends connected to them being almost identical. Saturn ruled over a town called Latium, which later became known by its more contemporary name, Rome.


Origin


The Romans adopted many Greek traditions, including their religious and cultural practices, as they held the Greeks in high regard. Greek tutors would even be employed by wealthy Roman families to tutor their sons. The Roman people built the first temple in honor of their god, Saturn around 497 BC.


Legends and Stories


Saturn overthrew his father, Caelus, due to his oppressive rule. Much like the legend of Cronus and Rhea, in Greek mythology, Saturn’s rule was threatened by his own offspring. The solution for him was to eat his offspring, like his Greek counterpart had and was also tricked by his wife into consuming a stone wrapped in cloth, in lieu of his sixth child. The stone caused his digestive system to heave up the other five children he had already digested. His sixth child, Jupiter, triumphed over him that day and again when he overthrew his father when he was older. After this failure, Saturn ran away and settled in Latium where he was welcomed by the two-faced god, Janus. There he taught the people about growing grapes and farming.


Family


Saturn’s consort or wife was the goddess of fertility, Ops. Before Ops, he however had another consort, Lua; the goddess of destruction. His children included: Pluto, Neptune, Juno, Vesta, Jupiter and Ceres.


Appearance


Saturn is oftentimes depicted with a scythe. The god was also featured on Roman coins in 104 BC, riding a chariot pulled by four horses.


Temples and Festivals


The famous temple dedicated to Saturn, the Templum Saturni, has remains which can still be viewed by tourists today. Though the ruins are not the original building, eight illustrious columns rise up from the remnants of the temple’s porch. The temple was built in the center of the commerce district in Rome, known as the Forum Romanum and also housed the Royal Treasury. The current ruins are from the third incarnation of the temple. The first two were destroyed in fires. The original temple was said to contain a statue of the god, constructed of wood. The legs of the statue were wrapped in linen or wool throughout the year, but the bindings were removed for the festival in honor of the god. Sacrifices were made to Saturn with no veil worn on the head, in contradiction with the usual tradition of followers being veiled when making sacrifices. This may have been a reflection of the role reversal the god represented.


His rambunctious festival called Saturnalia lasted originally for only one day, but eventually became a seven-day long celebration, commencing on the 17th December. The festival celebrated the god, the sowing of grain as well as the period of the Golden Age, during which he had ruled. The same feeling of harmony was emulated through the dissolution of the roles of master and slave for the festival’s duration. In some instances, the masters even served their slaves! Both slaves and masters wore the hat worn by those free from bondage, the pileus, during the festival. The hat was a symbol of their goddess of liberty, Libertas, though it was also originally a Greek concept. The festival was marked by the wearing of colored cloth instead of the traditional white togas, which represented the wearer’s status in society. Gambling was allowed during the festivities and a fake king, called the King of Misrule, was chosen from among the commoners. This king ruled during the festival by making frivolous demands of his people and causing general mischief. The festival also included the sharing of gifts among all classes of society as well as much eating and drinking. At one stage the celebration was reduced to a mere three days, by Augustus Caesar, but increased again to a five-day affair thanks to Emperor Caligula – known for his unusual and oftentimes extreme behavior.


Modern Influence


The festival of Saturnalia may well have influenced the Christian celebration of Christmas, scholars purport. The god’s name was also adopted as a day of the week, Saturday, known by its Latin name Dies Saturni. His name has additionally been allocated to the sixth planet from the sun, Saturn. When Galileo Galilei first discovered the planet, he viewed its majestic rings as arms or handles through his telescope. Some of the ice and rock particles in its rings are as large as a house, scientists have subsequently discovered!



Saturn

Minos



Fast Facts:

  • Pronunciation: Mai-nos

  • Origin: Greece

  • Role: Ruler of Crete, judged the dead in the underworld

  • Parents: Zeus and Europa

  • Wife: Pasiphae



Who is Minos?


Minos is the king of Crete in Greek mythology. His name means governor or king in the ancient Cretan language. He was able to gain the throne of Crete with the help of the god Poseidon, an Olympian god who ruled over the sea. He sought the aid of the gods again when he wanted to acquire the Aegean islands and was assisted by the god, Knossos. At the time the seas were festered with pirates, but Minos was able to annihilate them with his superior naval fleet and thereby unite the cities of Knossos. Scholars portray differing views of the king. He is either depicted as a just and fair ruler or one who was cruel and wicked.


Origin


Homer’s Iliad and Odyssey mention Minos in the context of the King of Knossos. Thucydides, an ancient Athenian historian, refers to him as the first man to establish a navy.


Legends and Stories


King Minos is closely associated with law. He helped create new laws for the Minoan people every nine years with the help of his father Zeus and became a judge in Hades after his death.


Minos’ son Glaucus


The king’s son, Glaucus, disappeared one day while he was playing and Minos sent Polyidus, a renowned seer, to go and find the child. He found the boy in a wine casket in the king’s wine cellar, but unfortunately, Glaucus was already dead. Minos insisted his son be brought back to life, but Polyidus did not agree with him. The seer’s refusal resulted in him being locked up in the cellar by Minos. While detained, Polyidus discovered a magical herb which brought a dead snake back to life. He decided to use the herb to bring Glaucus back to life and was successful in this regard. The king released him from the cellar but did not allow him to leave Crete until he had imparted the art of divination to his son. The seer obliged Minos once again, but took away the gift from Glaucus directly after he had schooled the boy in the art.


The Minotaur


The legend of the Minotaur transpired from King Minos angering the god Poseidon. Poseidon retaliated by tricking Minos’ wife Pasiphae into having sexual intercourse with a bull. She then gave birth to the half-bull, half-man Minotaur, which later inhabited the labyrinth under the king’s palace.


King Minos’ son died while fighting a bull in Athens. Minos was devastated by the loss and exacted his revenge on the city and its people. In order to take control of the city, he solicited the help of the Athenian king’s daughter, Scylla, by making her fall in love with him. Since he knew the Athenian king’s strength lay in his hair, he had Scylla cut off her father’s hair. After taking charge of the city, he made his severe demands to the people and his terms were agreed upon. Every nine years, seven young men and seven young women were sent into the labyrinth in Crete to be sacrificed to the Minotaur. The cruel sacrifices lasted until one day Theseus, a son of the Athenian king, was able to kill the beast in the maze, with the help of Ariadne, Minos’ daughter.


Minos was eventually killed by King Cocalus’ daughters. They poured boiling water over him while he was taking a bath, burning him to death. In Hades, the underworld, he became a judge of the dead, perhaps since he was viewed as a just leader who promoted Zeus’ laws when was living.


Family


Pasiphae bore him many children including Ariadne, Androgeos, and Phaedra. He also had four sons with a nymph, Pareia, as well as children by other women.


Appearance


The king appears on ancient coins as a curly-haired, bearded man with a cloth headband. In The Last Judgment, a painting by Michelangelo, the king additionally sports two donkey’s ears in his role as judge of the underworld.


Modern Influence


The ruins of the city of Knossos, the largest city under Minos’ rule, were discovered by a British archaeologist in the early 1900s. Visitors can explore the palace of Knossos, including the throne room, and perhaps get an idea what the mythical labyrinth in mythology may have been like. Scholars posit the British have also eagerly compared their own pre-eminence in the early 20th century to the great Minoan civilization.


The king also features as an antagonist in The Battle of The Labyrinth, part of the Percy Jackson series by Rick Riordan.



Minos