For this question, you can assume that the following traits are controlled by single locus genes and are located on different chromosomes. Phenylthiocarbamide (PTC) is a dominant trait that you can attribute the ability to taste bitterness by a receptor on the tongue. The ability to taste bitterness is dominant over being tasteless. Freckles are controlled primarily by the MC1R gene. Freckles show a dominant inheritance pattern. Suppose a freckled woman who can taste bitterness has a father who is does not have freckles and cannot taste PTC. She then has children with a heterozygous, freckled man who can also taste bitterness.
a) Please provide the genotypes of the parents on the line above the Punnett Square.
b) Complete the dihybrid cross in a Punnett Square
c) List both the genotypes and phenotypes of their offspring.