What causes a person to be albino?
It’s the result of a mutation in one of seven genes, labeled from OCA1 to OCA7. OCA causes decreased pigment in the skin, hair and eyes, as well as vision problems. The amount of pigment varies by type, and the resulting color of skin, hair and eyes also varies by and within types.
Why are albinos so rare?
Albinism is a rare genetic condition caused by mutations of certain genes that affect the amount of melanin your body produces. Melanin controls the pigmentation (color) of your skin, eyes and hair.
How rare is a albino?
Since albinism is usually recessive, however, it generally manifests in offspring only when both parents carry the mutated genes. That´s one reason why the phenomenon remains rare. Mammalogists have estimated that about one in 10,000 births results in a true albino.