Wild horses can have short or long manes and brown or green eyes. Mane phenotype is controlled by a single gene with two alleles, M (long mane) and m...

Wild horses can have short or long manes and brown or green eyes. Mane phenotype is controlled by a single gene with two alleles, M (long mane) and m (short mane), where M is dominant to m. The eye phenotype is also controlled by a single gene with two alleles, B (brown eyes) and b (green eyes), where B is dominant to b. The mane and eye phenotype genes assort independently.

a. In the cross MmBb x mmBb, what is the probability of a foal having a short mane and green eyes, or, a short mane and brown eyes?

b. In the cross MMBb x Mmbb, what is the probability of a foal having a long mane and green eyes, or, a long mane and brown eyes?