Question: 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

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.

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