Answer Happy

In Labrador Retrievers, coat color is determined by the interaction between two genes. The alleles for one gene influence the color of the pigment in the hair (B is black and b is chocolate brown). The alleles for a second gene influence whether the pigment is deposited in the hair (E is full deposition and e is reduced deposition). Yellow Labrador Retrievers are homozygous recessive for the second gene (ee). A female chocolate Lab (bbEe) is crossed with a male black Lab (BbEe). If this mating resulted in a litter of 8 puppies, how many of those puppies would you expect to be chocolate? (Hint: Write down the genotype combinations that would give you chocolate. Once you know those, find the phenotypic ratio using multiplication) 3 8 O O 1 0.7 2 6 5