If some people who inherit a dominant allele have the phenotype associated with it and others who inherit it do not, the allele is said to demonstrate
A) incomplete dominance.
B) incomplete penetrance.
C) codominance.
D) continuous variation.
E) polygenicity.

Question

Quizplus · Accepted Answer

Incomplete penetrance occurs when a dominant allele is present but does not always produce the expected phenotype.

If Some People Who Inherit a Dominant Allele Have the Phenotype