Hemophilia is caused by several genetic factors;one,a recessive allele of an X-linked gene,is the subject of this problem.Assume that a man with hemophilia marries a normal woman whose father had hemophilia.What is the probability that their first son will have hemophilia?

Question

Quizplus · Accepted Answer

The mother is a carrier of the hemophilia allele (X^HX^h) because her father had hemophilia. The father has hemophilia (X^hY). The probability that their son will inherit the X^h from the mother and Y from the father is 1/2.

Hemophilia Is Caused by Several Genetic Factors;one,a Recessive Allele of an X-Linked