A woman who is a carrier for hemophilia marries a normal man. What is the probability that their first child will be a hemophiliac girl? What is the probability that the child will be a girl who is a...

A woman who is a carrier for hemophilia marries a normal man.

1. What is the probability that their first child will be a hemophiliac girl?


2. What is the probability that the child will be a girl who is a carrier for the disease?


3. What is the probability that, if they have a son, he will be normal?


4. What is the probability that they will have a son who is a carrier for the disease?