Hemophilia is a sex-linked recessive disorder in which a person's blood do not clots and he can bleed to death even after minor injuries because blood will keep running due to a small cut.

It is a recessive trait which means that even if one normal gene is present along with Hemophiliac gene, the person will not have the disease and he will be the carrier.

Question: What will be their children’s possible phenotypes?

If a woman who is a carrier for hemophilia marries a hemophiliac man, their genotypes can be denotes as :

Here H, indicate normal gene and small h indicate defected (hemophilia) gene.

Parents: XHXh X XhY

Offspring: XHXh : XHY: XhXh: XhY

Phenotype of offspring:

XHXh: The child will be daughter and normal (25 % chances)

XHY: The child will be son and normal (25 % chances)

XhXh: The child will be girl and Hemophiliac (25 % chances)

XhY: The child will be son and Hemophiliac (25 % chances)

Hope it helps!

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2 years ago