Question

Hemophilia is caused by a recessive gene on the X chromosome. A female who is a

carrier has a daughter with a male who has hemophilia. What is the probability that
their daughter will have Hemophilia?

A.) 50% chance
B.) 0 %
C.) 25% chance
D.) 75% chance

Answer 1

B.) 0 %

Step-by-step explanation:

To find out we have to make a punnet square

the mother's genotype XhX

the father's genotype XY

the gametes from the mother Xh and X

the gametes from the father X and Y

Xh X

X XhX XX

Y XhY XY

you can see that one of the two daughters has one gene for haemophilia(XhX) but the gene is recessive so she'll be just a carrier