Question

A man with hemophilia and a normal woman who is a carrier for hemophilia plan to have children. The Punnett square represents the cross between the parents. The H represents the dominant allele and the h represents the recessive allele. What is the chance that any of the children could be hemophiliacs?
A 0%B 25%C 50%D 100%

Answer 1

The chance that any of the children could be hemophiliacs is 50%

When a Punnett Square is used to determine the chances of having hemophiliac children results will be:

Both female offspring are heterozygous for the hemophilia trait and are considered carriers.

Both male offspring receive an undamaged X-chromosome and are normal.