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 choicespolygeniccodominanceincomplete dominancepleiotropymultifactorialepistasis
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 choicespolygeniccodominanceincomplete dominancepleiotropymultifactorialepistasis
Solution
This is an example of epistasis. In this case, the expression of one gene (E/e) can mask or modify the effect of a second gene (B/b). If the E/e gene does not allow pigment to show in the hair, it doesn't matter what the B/b gene codes for because the pigment won't be visible. This is a classic example of epistasis, where one gene modifies or masks the expression of another.
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