Question

9. In humans, hemophilia is a Sex-Linked Recessive trait. If a female who is a carrier for hemophilia

marries a male with normal blood clotting, what fraction of the male children will have normal
blood clotting?
A. 0/2
B. 1/2
C. 3/4
D. None of the above

Answer 1

If a female carrier for hemophilia marries a male with normal blood clotting, the male children have a 50% chance of having normal blood clotting.

Step-by-step explanation:

Hemophilia is a Sex-Linked Recessive trait in humans, meaning the gene responsible is located on the X chromosome. If a female is a carrier for hemophilia and marries a male with normal blood clotting, the male children have a 50% chance of having normal blood clotting. This is because the sons inherit one X chromosome from their mother, which could be either normal or carry the hemophilia gene, and one Y chromosome from their father, which does not carry the hemophilia gene.

Learn more about Hemophilia inheritance