2006-11-05 22:01:44 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Biology
This is a genetic matter
It depends to you mother and father's eye chromosomes
At first humans they used to have brown eyes.
With mutations in chromosomes, colors like
blue, green, black, hazel were developed.
2006-11-05 22:09:37 · answer #1 · answered by Romeo 2 · 0⤊ 0⤋
It is bcoz of the genes. They are responsible for all physiological and other sort of functions of the body .
Eye color or eye colour is a polygenic trait and is determined primarily by the amount and type of pigments present in the eye's irisHumans and other animals have many phenotypic variations in eye color.In humans, these variations in color are attributed to varying ratios of the two types of melanin produced by melanocytes in the iris: eumelanin and pheomelanin.The brightly colored eyes of many bird species are largely determined by other pigments, such as pteridines, purines, and carotenoids.
Three main elements within the iris contribute to its color: the melanin content of the iris pigment epithelium, the melanin content within the iris stroma, and the cellular density of the iris stroma.In eyes of all colors, the iris pigment epithelium contains the black pigment, eumelanin.Color variations among different irises are typically attributed to the melanin content within the iris stroma.The density of cells within the stroma affects how much light is absorbed by the underlying pigment epithelium.
2006-11-06 07:07:28 · answer #2 · answered by No matter what happens i ll... 2 · 0⤊ 0⤋
It's all in the genes. It's the same with hair and skin colour.
2006-11-06 06:09:50 · answer #3 · answered by Mafia Agent 4207 5 · 0⤊ 0⤋
Heterochromia. Its a genetic mutation that gives you irses of two different colours.
David Bowie and Kate Bosworth have it.
2006-11-06 06:38:10 · answer #4 · answered by steffim333 2 · 0⤊ 0⤋
due to presence of pigment.in some people pigments are present in less no.So there eye color is not black.
2006-11-06 08:57:25 · answer #5 · answered by savita_chill16 1 · 0⤊ 0⤋
Not the same as WHAT ?
2006-11-06 06:15:32 · answer #6 · answered by pappy 6 · 0⤊ 0⤋
Why is persons not proper type question good grammar????
2006-11-06 06:13:12 · answer #7 · answered by Bexx 4 · 0⤊ 2⤋
this is genetics....
it depends on your genes that you get from your parents....
2006-11-06 13:02:42 · answer #8 · answered by P.Y.T. 3 · 0⤊ 0⤋