In guinea pigs, short hair is dominant to long hair. a guinea pig that homozygous dominant for hair is crossed with a female who has long hair. complete a punnett square and determine the genotypic and phenotypic ratios

50% Hh - short, 50% hh - long

Explanation:

The top of the Punnett square would have Hh and the side would have hh. When crossed, the results would be Hh, hh, Hh, and hh. So half of the offspring have short hair and the other half have long hair.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.