A Pregnant Woman with Recessive X- Linked Hemophilia and Whose

Multiple Choice

A pregnant woman with recessive X- linked hemophilia and whose partner is a normal (non hemophiliac) man wants to know the chances that she will have an affected child. From an ultrasound, she knows that the child is a boy. What are the chances that her son will have hemophilia?

A) the chance that their son will be affected is 0%
B) the chance that their son will be affected is 100%
C) the chance that their son will be affected is 50%
D) the chance that their son will be affected is 75%
E) the chance that their son will be affected is 25%