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More than meets the eye the genetics of eye color case study answers

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Facebook Twitter Email Share this article Print. Have you ever noticed how many different eye colors there are? All these different eye colors are formed by the same pigment: melanin. Whether you have dark or light eyes depends almost entirely on genetics. And AncestryDNA can tell you more about the role your genes play in your eye color. Eyes come in a wide range of colors, some more common than others.
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Why Siberian huskies have those brilliant baby blues

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Eye Color Genetics | AncestryDNA® Traits Learning Hub

It is produced by the melanocytes in the iris and is the same substance that darkens our skin when it is exposed to sunlight. The red eye color in people with albinism is due to the absence of pigment in the iris. Light that enters the eyes get reflected by the retina in the back of the eye. Since the retina is well circulated, the reflected light sows the color of the blood in the back of the eye. The amount of eumelanin in the iris epithelium, as well as the amount of it in the iris stroma determines how light or dark the eyes are.
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More Than Meets the Eye

These genes control the amount of melanin inside specific cells of the iris. Some of the eye color genes include OCA2 , which is one of the major pigmentation genes that affects the amount and quality of melanin in melanocytes and HERC2 , which functions as an enhancer regulating OCA2 transcription. In humans, the pigmentation of the iris changes from light brown to black, depending on the concentration of melanin in the iris pigment epithelium and within the iris stroma, and the cellular density of the stroma. But, did you know that blue, green, or any other eye color does not result from blue or green pigment? Melanin is responsible not only for the color of human eyes, but also for the hair, and skin color.
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There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page. I saw an earlier question where someone stated that she and her husband had blue eyes and wanted to know the chance of having a blue eyed baby.
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