If a colourblind man marries a woman who is homozygous for normal colour vision, probability of

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4.Principles of Inheritance and Variation

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If a colourblind man marries a woman who is homozygous for normal colour vision, the probability of their son being colourblind is

A

$0$

B

$0.5$

C

$0.75$

D

$1$

(NEET-2016)

Solution

(a): Genotype of colour blind man -$X^c Y$

Genotype of women homozygous -$XX$ for normal woman

Hence, there is zero $(0)$ probability of their son to be colour-blind.

Standard 12

Biology

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