Response to the following problem:
A recessive mutant allele, black, causes a very dark body in Drosophila when homozygous. The normal wild-type color is gray.
a. A black female is crossed to a heterozygous gray male. What are the parental genotypes?
b.. What F1 phenotypic and genotypic ratios are produced from this cross? (Show your Punnett Square)