Eyes - Blue Eyes

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The recognition of an eye color is the combination of melanin pigment on the iris fibers. Iiris is located inside the eye, in between the cornea and the internal crystalline lens. Pupil is present in the center of the hole its work is to control the amount of light entering the eye.
In the iris stroma low quantity of melanin is present in blue eye in which the longer wavelength of light is absorbed by iris pigment while the shorter waves are reflected back. Blue eyes are most common in Northern Europe and Central Europe and to a lesser degree in Southern Europe, North America southern Central Asia. In the case study re-search work of 2002 it was found that about 33.8 percent are blue eye color among Caucasians in US. It was also found that there is one out of every six children in USA.
According to some news states that blue-eyed people have a common ancestor. The genetic of an eye color is more complex to understand. At this moment the three pairs controlling eye of human is known. The Geneticists have also designed some models about using the bey 2 and gey gene pairs. Is task is to explain the inheritance of blue, green and brown eyes. The model bey 2 gene has a brown and a blue allele. It is said that brown allele is always dominant over the blue allele. The Blue eyes will occur only if all four alleles are for blue eye. It is often hard to predict that the parents having the blue eye so there children should have blue eyes. There are other genes, yet to be left behind, that determine eye color or that explains the known eye color. It is about 8% of the people in the world having blue eyes.