In Humans,hemophilia Is Caused by a Recessive Allele on the X

Short Answer

In humans,hemophilia is caused by a recessive allele on the X chromosome.Suppose a man with hemophilia has children with a healthy woman whose mother had hemophilia.What is the probability that their second child will have hemophilia? (Enter the probability as a percent.Enter the number only without the percent sign.For example,enter 100% as 100 and enter 12.5% as 12.5)