Polydactyly is an example of a trait that is both ________ and variably expressive.
A)incompletely penetrant
B)pleiotropic
C)multifactorial
D)completely penetrant

Question

Quizplus · Accepted Answer

Polydactyly, the condition of having extra fingers or toes, is an example of a trait that is incompletely penetrant, meaning not all individuals with the gene(s) for polydactyly will express the trait. It is also variably expressive, as the extent to which the extra digits develop can vary widely among individuals.

Polydactyly Is an Example of a Trait That Is Both