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GATE 2025 BT – Question 30

Genetics, Cellular and Molecular Biology · Genetics: Mendelian inheritance, gene interaction, complementation, linkage, recombination, chromosome mapping, extrachromosomal inheritance · 1 mark · Numerical answer

The allele associated with albinism in humans is recessive (c). The probability that an albino male (cc) and a carrier female (Cc) will have an offspring with normal skin pigmentation is _______ . (Round off to one decimal place)

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Correct answer: 0.49 to 0.51

Explanation

The cross $cc \times Cc$ gives half $Cc$ (normal pigmentation) and half $cc$ (albino), so the probability is 0.5.