In guinea pigs, black body color (B) dominates over white (b). A homozygous black pig is crossed

In guinea pigs, black body color (B) dominates over white (b). A homozygous black pig is crossed with a white pig. What genotype and phenotype will the offspring have?

Let us write down the parental individuals according to the introduced designations.

A black guinea pig, homozygous by condition, will be BB. Such an individual produces B.

A guinea pig with white hair will be bb, since homozygosity in this case is a necessary condition for the phenotypic realization of the trait. It also produces the same type of germ cells b.

All offspring from the crossing of the described guinea pigs will look like this: Bb, which corresponds to the black color of the pups’ coat.

Answer: 100% Bb, black cubs.