Why do sons of a haemophilic father never suffer from this trait?

  • Haemophilia is a X-linked recessive trait.A son will recieve one gamete from both his parents.
  • Since it is a son he will recieve the Y gamete from his father and the X gamete from his mother.
  • The Y gamete never holds a trait in any case.The trait will be only on the X gamete.
  • So even if the father show the disease,the son will not get the affected gene from his father.



  • 16

how is this possible ?plz somebody explain 

i think this is nt possible

  • 3

 bcoz it is linked with x chromosome so if mother is not haemophilic the son will never suffer from it.

  • -1
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