A man heterozygous for black hair and brown eyes (both traits dominant ) has married a woman who is blue eyed and blond (both traits recessive). They plan to have 4 children. Make a drawing of one of the man's cells as it undergoes meiosis , and use this drawing to explain the following.
a. What type of gametes (sperm) can the man make?
b. What is the expected frequency of each class (or type) of gametes?