Genetics: Analysis and Principles 5th Edition by Robert Brooker

تمرين 19

Polydactyly is a condition in which a person has extra fingers and/or toes. It is caused by a dominant allele. If a person carries this allele but does not have any extra fingers or toes, this is an example of
A) haploinsufficiency
B) a dominant negative mutation
C) incomplete penetrance
D) a gain-of-function mutation.