Eye Color
Eye Color. There is only one pigment that determines eye color: It's called melanin. Eye color is a polygenic phenotypic character determined by two distinct factors: the pigmentation of the eye 's iris and the frequency-dependence of the scattering of light by the turbid medium in the stroma of the iris.
Lighter eye colors, such as blue and green, are found almost exclusively among people of European ancestry. The genes transfer to alternative forms known as alleles. This color is semi-rare and is a combination of several other colors including green and brown.
Brown is the most frequent eye color worldwide.
There is only one pigment that determines eye color: It's called melanin.
Most of the time eye color is categorized as blue, green/hazel, or brown. When we say brown, we talk about light to medium brown and not very dark brown. Hazel eyes often appear to shift in color from brown to green.
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