Friday, October 2, 2009

Albinism (Short Note)

Albinism is complete or partial absence of pigments from skin, hair and eyes in many species of Mammals including man. It behaves as simple Mendelian trait an albinism is recessive to normal pigmented individuals (non albinos). Albino individuals are found in almost all human races but the trait occurs with rarity for example in English population one about 20,000 babies born in an albino. In albino the skin colour is pale reddish white, the iris is reddish and hair is pale straw colour. The reddish tinge depends upon the colour of blood which shows through the superficial layer of skin. This tinge is hidden by dark pigment present in the skin layer in case of non albinos. Albinos are sensitive to bright light and their skin is easily sun burned.

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