A woman who is heterozygous for the disease haemophilia marries a man who is haemophilic. What percentage of their offspring would have the disease?

A woman who is heterozygous for the disease haemophilia marries a man who is haemophilic. What percentage of their offspring would have the disease?

A 0%
B 25%
C 50%
D 75%

jamb 2018 biology

The correct answer is C. 50%

No explanation given

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