CBSE Class 12-science Answered
Why is it that the father never passes on the gene for haemophilia to
his sons? Explain.
Asked by Topperlearning User | 16 Jun, 2014, 03:57: PM
Expert Answer
Haemophilia is a sex-linked recessive disease. The defective gene is present on the X chromosome only and not on the Y chromosome. As the father always contributes a Y chromosome and never passes an X chromosome to his son, the gene for haemophilia can never be passed from a father to his son.
Answered by | 16 Jun, 2014, 05:57: PM
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