2007-04-05 03:32:56 · 9 answers · asked by sweetface 1 in Science & Mathematics ➔ Biology
it is a genetic autosomal recessive disorder caused by defect in or the absence of enzyme tyrosinase due to a defect an mutation of the gene on chromosome 11
Tyrosinase is the major enzyme involved in the formation of melanin pigment. Tyrosinase is responsible for converting tyrosine to DOPA and on to dopaquinone. The dopaquinone then forms black-brown eumelanin or red-yellow pheomelanin. The tyrosinase enzyme is made by the tyrosinase gene on chromosome 11, and alterations (also called mutations) of this gene can produce one type of albinism because the tyrosinase enzyme made by the altered gene does not work correctly.
Two additional enzymes called tyrosinase-related protein 1 or DHICA oxidase and tyrosinase-related protein 2 or dopachrome tautomerase are important in the formation of eumelanin pigment. The gene for DHICA oxidase in on chromosome 9 and the gene for dopachrome tautomerase in on chromosome 9. Alterations of the DHICA oxidase gene are associated with a loss of function of this enzyme and this produces on type of albinism. Alterations of the gene for dopachrome tautomerase do not produce albinism.
Three other genes make proteins that are also involved in melanin pigment formation and albinism, but the exact role of these proteins remains unknown. These genes are the P gene on chromosome 15, the Hermansky-Pudlak syndrome gene on chromosome 10, and the ocular albinism gene on the X chromosome.
it is of two types
oculocutaneous
ocular
http://en.wikipedia.org/wiki/Albinism
2007-04-05 05:25:55 · answer #1 · answered by rara avis 4 · 1⤊ 1⤋
What Causes Albino
2016-10-03 11:07:26 · answer #2 · answered by ? 4 · 0⤊ 0⤋
This Site Might Help You.
RE:
What causes women to give birth to albino child or children?
2015-08-06 19:23:05 · answer #3 · answered by Kizzie 1 · 0⤊ 0⤋
Causes Of Albinism
2016-12-14 09:04:18 · answer #4 · answered by ? 4 · 0⤊ 0⤋
Albinism (hypomelanism) is a genetically inherited desease which causes a lack of pigment (melanin) production in the individual affected.
2007-04-05 03:52:17 · answer #5 · answered by noid341 2 · 0⤊ 1⤋
A genetic variation or flaw the inhibits the production of pigment in the skin, eyes, and elsewhere.
2007-04-05 03:38:05 · answer #6 · answered by Mike1942f 7 · 0⤊ 1⤋
eithe the husband must be a carrier of albino gene or the wife should be a carrier of the albino gene....
2007-04-05 03:37:15 · answer #7 · answered by nijas 2 · 0⤊ 2⤋
Alteration of the genes, the individual possess the hemophillic trait.
2007-04-05 03:38:13 · answer #8 · answered by ebiyedinak 3 · 0⤊ 1⤋
its a genetic thing isn't it? so either they both have to have either the dominate or recessive gene.
2007-04-05 04:47:52 · answer #9 · answered by Anonymous · 0⤊ 1⤋
well ususally it's genetics... but i know it's also because of radiation in the surroundings...
2007-04-05 03:57:20 · answer #10 · answered by Anonymous · 0⤊ 1⤋