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Albinism (from Latin albus white; see extended etymology also called achromia achromasia or achromatosis) is a congenital disorder characterized by the complete or partial absence of pigment in the skin hair and eyes due to absence or defect of tyrosinase a copper-containing enzyme involved in the production of melanin. Albinism results from inheritance of recessive gene alleles and is known to affect all vertebrates including humans.