In Labrador Retrievers, black fur is dominant to yellow fur. How is it possible that 2 retrievers with black fur reproduce puppies with yellow fur?

A. One puppy parent had the recessive allele and passed it on to the puppies.
B. One puppy parent had the dominant allele and passed it on to the puppies.
C. Both puppy parents are homozygous for their black fur.
D. Both puppy parents passed on a recessive allele.
I think the answer is B. Am I correct? Thanks.

Disagree, black fur is dominant to yellow fur.

Much better 👍

To determine the correct answer, we need to understand the inheritance pattern of fur color in Labrador Retrievers. In this case, black fur is dominant to yellow fur.

If two Labrador Retrievers with black fur reproduce puppies with yellow fur, it means that both parent dogs must carry the recessive allele for yellow fur, even though they themselves have black fur.

Given this information, the correct answer is A. One puppy parent had the recessive allele and passed it on to the puppies.