A recessive allele can only appear in the phenotype of an individual A) in the F₁generation. B) exposed to certain environmental conditions. C) who carries the mutation in his or her gametes. D) who is homozygous for the mutation.

Question

Quizplus · Accepted Answer

A recessive allele must be present in both copies of the gene (homozygous) for it to be expressed in the phenotype. Therefore, only individuals who are homozygous for the mutation will show the recessive trait.

A Recessive Allele Can Only Appear in the Phenotype of an Individual