Albinism (from Latin albus, meaning "white") is a lack of pigmentation in the eyes, skin and hair. Albinism is an inherited condition resulting from the combination of recessive alleles passed from both parents of an individual. This condition is known to affect mammals, fish, birds, reptiles, and amphibians. About 1 in 17,000 people have some type of albinism, although up to 1 in 75 are carriers.
There are many alterations of genes which are proven to be associated with albinism. All alterations, however, lead to an alteration of the melanin (pigment/coloring) production in the body
The gene which results in albinism prevents the body from making the usual amounts of the pigment melanin. Albinism used to be categorised as Tyrosinase positive or negative. In cases of Tyrosinase positive albinism, the enzyme tyrosinase is present but is unable to enter pigment cells to produce melanin. In tyrosinase negative cases, this enzyme is not produced. This classification has been rendered obsolete by recent research.
As albinism is a recessive gene, the chance of offspring with albinism resulting from the pairing of a creature with albinism with a creature without albinism is very low and is discussed below.
2006-07-21 20:54:22
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answer #1
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answered by Neil 2
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It is due to genetic drift that inherited from both parents. An Albino has a pair of recessive genes that makes his/her body unable to produce pigments. An albino should be careful so that he/she do not get exposed to UV light too much, because that may cause skin cancer.
2006-07-21 19:12:07
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answer #2
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answered by r083r70v1ch 4
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Albinism is a recessive genetic trait. I believe it is a sex-linked trait located on the Y-chromosome. Actually! mybad! I'm thinking of colorblindness. However it is a recessive genetic trait - that Im sure :)
Heredity determines if one will be albino.
2006-07-21 19:10:42
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answer #3
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answered by Phillip R 4
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Someone who is albinio is born without pigment in their skin. The more pigment you have the darker your skin tone, and albinios completely lack that pigment.
2006-07-21 19:04:00
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answer #4
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answered by Jenna 1
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Genetic. Here is a great resource.
http://www.albinism.org/publications/what_is_albinism.html
2006-07-21 19:04:42
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answer #5
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answered by Loulabelle 4
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