In man, albinism is due to non-synthesis of melanin in absence of

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4.Principles of Inheritance and Variation

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In man, albinism is due to non-synthesis of melanin in the absence of

A

Lysine

B

Tyrosinase

C

Luciferase

D

Melanase

Solution

(b) In man, enzyme tyrosinase (also inhibited by excess phenylalanine) is absent due to homozygous recessive autosomal alleles.

Melanin or pigment formation from dihydrophenylalanine is stopped.

There is lack of pigment in skin, hair and iris.

Standard 12

Biology

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