Labrador retriever’s fur color is controlled by two alleles, E and B. The B/b gene codes for hair pigment, while the E/e gene controls whether or not pigment of any color will be show in the hair. This is an example of _____.Group of answer choicespleiotropycodominanceepistasisincomplete dominancemultifactorialpolygenic
Question
Labrador retriever’s fur color is controlled by two alleles, E and B. The B/b gene codes for hair pigment, while the E/e gene controls whether or not pigment of any color will be show in the hair. This is an example of _____.Group of answer choicespleiotropycodominanceepistasisincomplete dominancemultifactorialpolygenic
Solution
This is an example of epistasis. In genetics, epistasis is a phenomenon where the effects of one gene are modified by one or several other genes, which are sometimes called modifier genes. In this case, the E/e gene is modifying the expression of the B/b gene. If the E/e gene does not allow for pigment, it doesn't matter what the B/b gene codes for because the pigment won't
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