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 allele but does not have any extra fingers or toes, this is an example of:_________

Answer 1

If a person carries the dominant allele for polydactyly but does not have extra fingers or toes, this is an example of phenotype variation.

Step-by-step explanation:

If a person carries the dominant allele for polydactyly but does not have any extra fingers or toes, it means that they have the trait but it is not externally visible. This is an example of phenotype variation. Phenotype refers to the observable characteristics of an organism, and in this case, the absence of extra fingers or toes is the visible phenotype. However, the individual still carries the dominant allele for polydactyly, which means that they have the potential to pass it on to their offspring.