The reason why some individuals who inherit polydactyly (having an extra digit on the hand or feet) but do not express the trait is due to ________.
A) incomplete penetrance
B) incomplete dominance
C) gene linkage
D) pleiotropy
E) none of the answers are correct

Question

Quizplus · Accepted Answer

Incomplete penetrance refers to a situation where individuals inherit a genetic trait but do not express the trait. In the case of polydactyly, some individuals may inherit the gene for an extra digit, but if the trait is incompletely penetrant, they will not develop the extra digit.

The Reason Why Some Individuals Who Inherit Polydactyly (Having an Extra