A female black cat mated with an albino male and gave birth to six black kittens. When the albino male was mated with a different female black cat, three black cats and two albino cats were produced. How can you explain this pattern of heredity? Write genotypes for all three parental cats and offspring.

Concepts to Consider: The first female black cat was homozygous dominant for the albinism gene. The second female black cat was heterozygous. The albino male was homozygous recessive. All the offspring from the first mating were heterozygous. In the second mating, the black offspring were heterozygous, while the albinos were all homozygous recessive.