Still referring to Problem 1, what will be the possible genotypes of offspring from the following matings? With what frequency will each genotype show up?

a. AABB x aaBB

b. AaBB x AABb

c. AaBb x aabb

d. AaBb x AaBb

Problem 1.
One gene has alleles A and a. Another has alleles B and b. For each genotype listed, what type(s) of gametes can be produced? (Assume independent assortment occurs.)