NEET Biology question

Which of the following traits is controlled by sex-linked recessive genes?

(A)Polydactyly
(B)Huntington's chorea
(C)PTC (phenylthiocarbamide) tasting
(D)HaemophiliaCorrect

Answer: (D)

Solution

Haemophilia is a classic sex-linked (X-linked) recessive disorder. Polydactyly (a) and Huntington's chorea (b) are both autosomal dominant traits, and

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Question ID VK-120379