12
Question
If a boy's father has haemophilia and mother is heterozygous, what is the chance that the boys will inherit haemophilia.
If a boy's father has haemophilia and mother is heterozygous, what is the chance that the boys will inherit haemophilia.
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Solution
The correct option is A 50%
Father's chromosomes will be XhY whereas mother's chromosomes will be XhX (heterozygous). Their male offspring will have either XhY or XY chromosomes.Hence, there is a 50-50 chance of boy being haemophilic.
So, the correct answer is '50%'.
Father's chromosomes will be XhY whereas mother's chromosomes will be XhX (heterozygous). Their male offspring will have either XhY or XY chromosomes.Hence, there is a 50-50 chance of boy being haemophilic.
So, the correct answer is '50%'.
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