Hemophilia is a sex-linked trait. a hemophilic male produces offspring with a carrier female. what are the chances that the female offspring will suffer from hemophilia? what about the male offspring? make a punnett square to show your work.

Hemophilia is a X-linked recessive trait. I will denote it as XA for dominant and Xa for recessive.

Hemophilic male: Xa Y
Carrier female: XA Xa

Cross:

Xa Y
XA XaXA XAY
Xa XaXa XaY

Thus, as shown, of the ratio of two possible female offspring genotypes for Hemophilia, only 1/2 will have the disease; the chance is therefore 50%.

The ratio for male offspring genotypes for Hemophilia is 1/2 as well; the chance is therefore 50%.

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