1) A mouse has genotype AaBb. He inherited both dominant alleles (A and B) from his mother and both recessive alleles (aand b) from his father. For each of the following cases,determine the genotypes of the gametesthat this mouse can produce, and the proportions of each of thesegenotypes.
a. Genes A and B are unlinked.
b. Genes A and B are on the same chromosome, 12 centiMorgans apart.
c. Genes A and B are on the same chromosome, 75 centiMorgans apart.