This black dog has the genotype of BB for fur color. The black dog mates and has puppies with a solid white dog. The white dog has the genotype bb. What is the probability that this match will produce puppies that are also white?

Answer 1

To analyze this genetic situation, we have two dogs with the following genotypes:

• The black dog has the genotype BB (homozygous for black fur).
• The solid white dog has the genotype bb (homozygous for white fur).

When these two dogs mate, all the offspring will receive one allele from each parent. Since the black dog can only contribute a B allele (because it is BB), and the white dog can only contribute a b allele (because it is bb), we can determine the genotypes of the puppies.

The potential genotype of the puppies will be:

• From the black dog (B) and the white dog (b), all offspring will have the genotype Bb.

The genotype Bb results in black fur because the B allele (black) is dominant over the b allele (white).

Since all the puppies will be Bb, none of them will be white.

Thus, the probability that this match will produce puppies that are also white is 0%.