In Labrador retrievers, dogs with alleles E and B have black fur. Those with an E and two recessive b alleles have brown fur. Dogs homozygous for the recessive e allele have yellow fur. This is an example of _____.
A)complete dominance
B)incomplete dominance
C)codominance
D)pleiotropy
E)epistasis

Question

​In Labrador retrievers, dogs with alleles E and B have black fur. Those with an E and two recessive b alleles have brown fur. Dogs homozygous for the recessive e allele have yellow fur. This is an example of _____.
A)​complete dominance
B)​incomplete dominance
C)​codominance
D)​pleiotropy
E)​epistasis

Quizplus · Accepted Answer

This is an example of epistasis, where one gene (E) affects the expression of another gene (B) to determine the fur color in Labrador retrievers.

​In Labrador Retrievers, Dogs with Alleles E and B Have

In Labrador Retrievers, Dogs with Alleles E and B Have