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There is evidence that as many as 16 different genes could be responsible for eye color in humans; however, the main two genes associated with eye color variation are OCA2 and HERC2, and both are localized in chromosome 15. [10] The gene OCA2 (OMIM: 203200), when in a variant form, causes the pink eye color and hypopigmentation common in human ...
Melanin is responsible for giving color to the skin, hair, and eyes. Moreover, melanin is found in the light-sensitive tissue of the retina of the eye which plays a role in normal vision. The exact function of protein P is unknown, but it has been found that it is essential for the normal coloring of skin , eyes , and hair ; and likely involved ...
The condition is more prevalent in males, because the opsin genes responsible are located on the X chromosome. [2] Rarer genetic conditions causing color blindness include congenital blue–yellow color blindness (tritan type), blue cone monochromacy, and achromatopsia.
Your eye color is determined by the amount and distribution of melanin in the iris of the eye. And of course, the genes we inherit from our parents play a significant role in determining our eye ...
The reason boils down to genes. A senior lecturer in biomolecular sciences at Liverpool John Moores University said, "What we know now is that eye color is based on 12 to 13 individual variations ...
HERC2 is a giant E3 ubiquitin protein ligase, implicated in DNA repair regulation, pigmentation and neurological disorders.It is encoded by a gene of the same name belonging to the HERC family, which typically encodes large protein products with C-terminal HECT domains and one or more RCC1-like (RLD) domains.
Differences between the three types of cone cells are due to the distinct opsins they express, which are coded for by the genes OPN1LW, OPN1MW, and OPN1SW, respectively. The CIE 1931 color space is an often-used model of spectral sensitivities of the three cells of an average human.
Eye color, specifically the color of the irises, is determined primarily by the concentration and distribution of melanin. Although the processes determining eye color are not fully understood, it is known that inherited eye color is determined by multiple genes. Environmental or acquired factors can alter these inherited traits. [7]