Q. A women whose brother has haemophilic is concerned about passing this trait to her offspring. What is the risk that she will have a son with haemophilia?
A. 1/8
B. 1/4
C. 1/2
D. 1
Answer: ¼
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A. 1/8
B. 1/4
C. 1/2
D. 1
Answer: ¼