DNA evidence from an early human skeleton in Britain, shows that early inhabitants of were blue eyed and had dark brown skin. While residents of the UK still have high rates of blue eyes (about 48%). At the same time unlike the early humans in the UK the rate of dark skin is much lower. Describe the steps of natural selection that led to the change from brown skin blues, to a majority blues eye light skin in humans in the UK.
Conor of the eyes and skin are the racial characteristics. Blue eyes and light pigmented skin is the feature of cacusoid people to which Britain's belong. The colour of the eye is an example of multiple alleles. Alleles for the blue eyes is selected by nature among the Britain's because of their alliances within the caicasoid group. The skin colour is more of environmentally determined factor. Light colour is a product of melanin. Increased melanin means dark pigmentation and less melanin means light pigmentation. Skin pigmentation increases as temperature increases. Therefore among the Britain's who live in cold climates light pigmentation is selected by nature.
DNA evidence from an early human skeleton in Britain, shows that early inhabitants of were blue...