Question

Hemophilia is a sex‐linked,recessive trait. Which of the following describes the
probability of hemophilia in the offspring of a man who does not have hemophilia
and a woman who is a heterozygous carrier?
A There is a 100% chance that their sons will have hemophilia.

B There is a 0% chance that their daughters will have hemophilia.

C There is a 25% chance that their sons will have hemophilia.

D There is a 50% chance that their daughters will have hemophilia.

Answer 1

Ok so heterozygous means that the woman would be Hh. The man does not have it so he is homozygous recessive hh. Sex-linked means that it is either in males or females. Considering the father does not have it, it will only be in females. Therefore, 50% daughters.

Answer 2

Hmmm ok.