ipl-logo

Melanin Skin Color

974 Words4 Pages

In class we talked about melanin and how it effected skin color and briefly discussed how it effected eye color. How if you did not have melanin to color your eyes they would appear red or pink because of your exposed blood vessels like in albinism. I found this information truly fascinating and wanted to learn more about how/why we have color variation, or even color at all, in our eyes. The first thing I found in my research is that the original eye color is brown somewhere presumably 6,000-10,000 years ago there was a genetic mutation in which two nucleotides were switched, an adenine and a guanine. This mutation turned off the eyes capability of making a brown eye color. It was a very simple mutation that could have been very different, …show more content…

What makes the colors so noticeably different is the amount of melanin in both layers some one who has a lot of melanin in both layers is going to have darker eyes, but the cool part is if someone has green or blue eyes they will have melanin in the epithelial layer but have absolutely nothing in the stroma. So you may be thinking to yourself okay so when you look through the epithelial layer you will find blue or green melanin, but you won't because melanin doesn’t color things with those colors. Melanin colors things in different variations of brown. So this is where it gets tricky, how do people have blue or green eyes if there is no color in the stroma and no blue or green in the epithelial layer of the iris? Well, they don’t. No one truly has blue or green eyes its an optical illusion! Everybody, every human, has brown eyes! Just because of the layer that the melanin is found on and how much melanin is being produced changes not the actual …show more content…

I found out that she does and I guess a lot of other celebrities do too like Kate Bosworth, Jane Seymour, and almost kinda David Bowie. He doesn't actually have heterochromia iridis but he got into a fight with a childhood friend which left one eye permanently dilated to that one size in that one eye so it kinda looked like it. But heterochromia iridis was not as rare as I had previously thought 6/1000 people have it but in most of those cases the variation in color is so slight its very hard to tell. You never know you could have it! Heterochromia iridis can be hereditary or can even be caused by disease or

Show More
Related

Summary Of Chapter 8 And 9 Of Your Inner Fish

746 Words | 3 Pages

Two human receptor-making genes are similar to those in other mammals. This implies that human color vision began when one of the genes in other mammals duplicated and copies specialized over time for different light sources. The switch to color vision correlates to a switch from a monochromatic forest to one with a multitude of colors in

Read More

Cow Eye Dissection Lab Report

199 Words | 1 Pages

Cow Eye Dissection Introduction: In this lab, we dissected a cow’s eye. We learned about the exterior of the eye and the interior as well. We examined and identified the different parts of the eye. The eye is the organ of sight.

Read More

Racial Asciption In Metro2 Skin Color

159 Words | 1 Pages

Racial asciption is defined in the book as the operations that act as the backdrop to social interactions. People feel the need to categorize a person into a certain race, inorder to try to predict what to expect from strange situations or strangers. At Metro2 Skin color was the primarcy determinant used by teachers and other students to determine what race they believed aanother student was as well as physical characteristics, followed by the language they spoke. However other ellements also layed a role in dracial atribution of the student, including their Name, culture, and socioleconomic staus. The racially coded space in school referes to the places and ways in which stdents of different races hang ut and interact with other students.

Read More

Skin Color Biology

745 Words | 3 Pages

In the video, The Biology of Skin Color, Dr. Nina Jablonski explains “that the variation in skin color that evolved since our human ancestors migrated out of Africa can be explained by the tradeoff between protection from UV and the need for some UV absorption for the production of vitamin D” (Dr. Jablonski). What I found most interesting was that genes can influence skin and hair pigmentation in many ways. The overall color of the skin results from both the number of pigment-making cells which are called melanocytes and their level of activity. Nearly all skin types possess the ability to tan. Tanning is caused by an exposure to UV radiation which results in the simulation of melanin production in the body.

Read More

Symbols In The Outsiders

609 Words | 3 Pages

When describing Johnny for the first time Ponyboy says, “He had big black eyes... He had a nervous, suspicious look in his eyes”(11). What Hinton is showing the readers through eye color is a look into the personality of the character. Hinton describes the tougher meaner people to have icy-blue, small, cold, eyes, but the younger more innocent characters like Johnny have big, dark, soft looking eyes. The symbol of eye color as a show of personality is used as a way to move the story and character development

Read More

Light Skin Slavery

261 Words | 2 Pages

In order to understand the life’s of mulattoes or light skin color slaves one needs to look at interviews made to slaves and slave narratives. The primary sources I found to describe the life of a light skin slave was from slave narratives. The group of light skin slave narratives I found was for example, from Harriet Jacobs and Fredrick Douglass. All of the slaves mothers were black and their father were white, most of the time the plantation owners. I used the slave narratives to find different aspects of how they were treated, and viewed by the white society.

Read More

Theme For Lusus Naturae

711 Words | 3 Pages

and she knows that. She had “yellow eyes, pink teeth, red fingernails, and dark hair on her arms and chest” (225). The doctors called her a “Freak of nature”, and they thought that she couldn’t hear them because of the “mewing” she did. (225) Just hearing that I am sure made her feel even worse than she had before. It wasn’t hard to see that she was different.

Read More

Verbal Visual Essay: Go Set A Watchman

788 Words | 4 Pages

The eye belongs to Jean Louise, even though she doesn’t have black eyes. In fact, no one has black eyes. The black pupil represents her “colour-blindness” in regards to race. She is also blind to herself. She didn’t look into herself and explore what she thought was the truth until the end of the novel.

Read More

Race Without Color Analysis

790 Words | 4 Pages

The article written by Robert Kunzig I found interesting. Kunzig discovers that Neanderthals are our closest extinct human relatives. He had lots of good quality of work he has done to prove his main point. When he found the child that was buried they discovered that the child had leg bones strong enough to support a stocky Neanderthal body. According to Erik Trinkaus, a paleoanthropologist at Washington University in Saint Louis he states, “To prove the child had Neanderthal ancestors as well as Cro-Magnon ones, it only takes one features” then he says, “We’ve got two” (11).

Read More

Negative Effects Of Color Blindness

1367 Words | 6 Pages

Yet, the problem isn’t that the two-year old boy doesn’t know his colors rather, along with 8 percent of males, he suffers from color blindness. While 99% of individuals experience different effects from colorblindness, not all colorblind people see the same things. To place it into perspective, there are nearly 300 million individuals who experience visual impairment as a result of color blindness each day. Notwithstanding its deceptive name, just few of the human population are actually colorblind and can only see in high

Read More

Race Is A Biological Myth

219 Words | 1 Pages

The genes for skin color have nothing to do with genes for hair form, eye shape, blood type, musical talent, athletic

Read More

The Vitiligo Disease

1174 Words | 5 Pages

Vitiligo is a disease that causes the loss of skin color in blotches on the body. It is a condition where the extent and rate of the color loss is unpredictable and can depend greatly on the person with the condition. Vitiligo can affect any part of the skin on the body, and there are no limits on where or how much of the disease can spread (Mayo Clinic). Vitiligo is not frequent in the global population. Studies show that vitiligo has a frequency of 0.1-2.0% in the various populations (Spritz 2003).

Read More

Critical Whiteness Studies

765 Words | 4 Pages

Critical Whiteness Studies responds to the invisible and normative nature of whiteness in predominantly white societies, criticizing racial and ethnic attribution of non-white subjects who have to grapple with their deviation from the set norm, and opening the discussion on white privilege that results from being the unmarked norm (Kerner: 278). As Conway and Steyn elaborate, Critical Whiteness Studies aims to “redirect[...] the scholarly gaze from the margins to the centre” (283) and, more specifically, to interrogat[e][...] the centre of power and privilege from which racialization emanates but which operates more or less invisibly as it constructs itself as both the norm and ideal of what it means to be human. (ibid.) Thus, Critical Whiteness

Read More

Human Skin Colour Essay

1171 Words | 5 Pages

The origins of human skin colour: The origins of human skin colour remained an enigma that was to generate a multitude of misconceptions. The true source of human pigmentation was finally revealed with the discovery of the melanocyte in the 19th century. Once the amino acid tyrosine was identified to be the key enzyme in pigment formation, attention focused on elucidating the chemical structure of melanin, an enterprise that remains incomplete.

Read More

Descriptive Essay About Different Eyes

1044 Words | 5 Pages

They are very light like a tiger ready to pounce. My Mother’s eyes are a nice blue color, almost as blue as the sky but not to blue. They are like little blue sapphires ready to explode. Everyone in my family has either blue or brown eyes except for me.

Read More

More about Melanin Skin Color

Related Topics

Open Document