A man with hemophilia (a recessive, X-linked condition) has a daughter of normal phenotype. She marries a man who is normal for the trait and they want to know what their chances are of having a child with hemophilia since they know it is present in her family. For each question below, show the correct Punnett squares and mathematical work to support your answer and give each answer as a fraction. What is the probability that their daughter would have hemophilia?
