NEET Biology question

Haemophilia is more commonly seen in human males than in human females because

(A)This disease is due to a X-linked dominant mutation
(B)A greater proportion of girls die in infancy
(C)This disease is due to a X-linked recessive mutationCorrect
(D)This disease is due to a Y-linked recessive mutation

Answer: (C)

Solution

Because haemophilia is caused by a recessive allele on the X-chromosome, a male (hemizygous, with only one X) expresses the disease with just a single copy of the allele, while a female would need

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Question ID VK-119666