If a trait may appear in the phenotype only when two genes for it are present, that trait is called:
A)weak
B)recessive
C)binomial
D)expressive

Question

Quizplus · Accepted Answer

A trait that only appears when two genes for it are present is recessive. This means that even if an individual carries one dominant gene and one recessive gene, the trait will not appear in their phenotype. Both genes must be recessive for the trait to be expressed in the phenotype.

If a Trait May Appear in the Phenotype Only When