Body Fluids and Circulations

Question

If a haemophilic carrier female marries a normal man, the chances are that

  • all the daughters will have haemophilia

  • 50% of the daughters will have haemophilia

  • 50% of the sons will have haemophilia

  • all the sons will have haemophilia

Answer

C.

50% of the sons will have haemophilia

Haemophilia is an inherited bleeding disorder where the blood does not clot properly. It is caused when blood does not have enough clotting factor.

In the above situation, 50% of the sons will have haemophilia. The cross is as given below

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