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Question
Which of the following is an example of an X-linked trait?
Options
Hypertrichosis
ABO blood type
Haemophilia
Height
MCQ
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Solution
Haemophilia is a classic example of an X-linked recessive trait. It is caused by a mutation in genes on the X chromosome that code for blood clotting factors. Other X-linked examples include colour blindness, muscular dystrophy, and night blindness.
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