Question

A female guinea pig homozygous dominant for black fur color is mated with a male homozygous for white fur color. In a litter of eight offspring, there would probably be ____. * 5 points 8 black guinea pigs. 4 black and 4 white guinea pigs 2 black, 4 gray, and 2 white guinea pigs 8 white guinea pigs.

Answer 1

8 black guinea pigs

Step-by-step explanation:

We're given that the black fur color is the dominant trait, meaning that this problem deals with complete dominance. In complete dominance, having just one allele is enough to express a certain phenotype. So let's say the female guinea pig has the genotype BB for homozygous black. The male would be bb since he's homozygous white, and the color white is recessive. Cross this and you get the genotypes Bb. But remember that even having one dominant allele will be sufficient to express the dominant phenotype. So all guinea pigs shall be black in fur color.