Hey guys! I need some more explanation to get to the correct answer, 1/8.

This is what I got so far, I thought the answer was 1/2 *1/2 = 1/4 because theres a chance of hemophilia,son = 1/2 and cb,son = 1/2 from each.

The question asks (from Bootcamp) :

A color blind man without hemophilia (both X-linked traits) marries a woman who is a carrier for both traits. What is the probability they will have a son with both color blindness and hemophilia? Hemophilia and color blindness are unlinked genes.

I didn't understand their solutions that "the man must donate the Y chromosome (1/2 probability), the woman must donate Xh (1/2 probability), and she must also donate Xc (1/2 probability). We just multiply these chances together to find (1/2)(1/2)(1/2) = 1/8."

This is what I got so far, I thought the answer was 1/2 *1/2 = 1/4 because theres a chance of hemophilia,son = 1/2 and cb,son = 1/2 from each.

The question asks (from Bootcamp) :

A color blind man without hemophilia (both X-linked traits) marries a woman who is a carrier for both traits. What is the probability they will have a son with both color blindness and hemophilia? Hemophilia and color blindness are unlinked genes.

I didn't understand their solutions that "the man must donate the Y chromosome (1/2 probability), the woman must donate Xh (1/2 probability), and she must also donate Xc (1/2 probability). We just multiply these chances together to find (1/2)(1/2)(1/2) = 1/8."