A colour-blind man (X^cY) marries a woman who is a carrier for haemophilia (XX^h). Which of the following is true for their progeny?

NEET Biology question

A colour-blind man () marries a woman who is a carrier for haemophilia (). Which of the following is true for their progeny?

(A)25% of female progeny carry the genes for both haemophilia and colour-blindness
(B)25% of male progeny carry only the gene for haemophilia
(C)25% of female progeny carry only the gene for colour-blindness
(D)All of theseCorrect

Answer: (D)

Solution

The father contributes either or ; the mother contributes either or (normal); combining these four equally likely outcomes (each 25%): daughters getting (father) and (mother) carry both disease genes (25%, matching (a)); daughters getting (father) and (mother, normal) carry

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Question ID VK-120368