If the father is normal and the mother I haemophilic , then both the sons are
a. One is haemophilic and rye other is normal b. Both are haemophilic c. Both are normal

Dear student, 

Since the mother is hemophilic (homozygous for disease carrying X chromosome) all the male progenies will have hemophilia. 
So, the correct answer is (b) Both are hemophilic 


Regards,
 

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A male offspring has 50% chance of active disease

So ithink Opt A is correct
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