generic · 12th TN - English Medium · BIO ZOOLOGY · Page 61

Albinism

Chapter 3: 4. Luteal or secretory phase · BIO ZOOLOGY · EN medium

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Albinism is an inborn error of metabolism, caused due to an autosomal recessive gene. Melanin pigment is responsible for skin colour. Absence of melanin results in a condition called albinism. A person with the recessive allele lacks the tyrosinase enzyme system, which is required for the conversion of dihydroxyphenyl alanine (DOPA) into melanin pigment inside the melanocytes. In an albino, melanocytes are present in normal numbers in their skin, hair, iris, etc., , but lack melanin pigment. , dihydroxy Tyrosinase Melanin phenylalanine

📖 Class 12 Bio Zoology English 2024 Edition www.tntextbooks.in · Page 61

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Albinism is an inborn error of metabolism, caused due to an autosomal recessive gene. Melanin pigment is responsible for skin colour. Absence of melanin results in a condition called albinism. A person with the recessive allele lacks the tyrosinase enzyme system, which is required for the conversion of dihydroxyphenyl alanine (DOPA) into melanin pigment inside the melanocytes.

In an albino, melanocytes are present in normal numbers in their skin, hair, iris, etc., , but lack melanin pigment. , dihydroxy Tyrosinase Melanin phenylalanine

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