Biology Practice Problems Genetic Counseling Practice Problems Solution: Complete the Punnet square and answer the question...

Solution: Complete the Punnet square and answer the questions below given only the following:John's parents are Donna, a carrier for Hemophilia A, and Tony who does not have Hemophilia A.What is the probability the John would:A. have Hemophilia A?B. not have Hemophilia A?

Problem

Complete the Punnet square and answer the questions below given only the following:

John's parents are Donna, a carrier for Hemophilia A, and Tony who does not have Hemophilia A.

What is the probability the John would:

A. have Hemophilia A?

B. not have Hemophilia A?

Solution

John is a male with an XY for a set of sex chromosomes. The father's Y chromosome is always passed on to his sons. The chromosomes of an individual is contributed by both parents. Thus, the X chromosome could only come from his mother.

Solution BlurView Complete Written Solution