A mutation in a gene
A) might have no effect on the protein encoded by the gene.
B) must result in the creation of a nonfunctional protein.
C) cannot result in a protein with a new function.
D) invariably results in a change in the phenotype of an organism.

Question

Quizplus · Accepted Answer

A mutation in a gene can result in three outcomes: no effect, a nonfunctional protein, or a protein with a new function. It is not always true that a mutation will result in a change in the phenotype of an organism. Therefore, the best choice is A, because it covers the possibility of a mutation having no effect on the protein encoded by the gene.

A Mutation in a Gene