Problema Solution
In a guinea pig, pure black hair coloring B is dominant over pure white coloring b. Suppose two hybrid Bb guinea pigs, with black hair coloring, are bred. Find an expression for the genetic make-up of the guinea pig offspring.
Answer provided by our tutors
The first black guinea pig was homozygous for fur color, the second
was a heterozygote. Called the black allele B and the albino allele
O, the parental genotypes are BB, OO, and BO,
respectively. The first guinea pig produced only B gametes, the second
only O gametes, and the third both gamete types in a 1:1 ratio. The
offspring from the first mating all had the genotype BO. The offspring
from the second mating were nearly 1:1 BO and OO