A gene that only influences the expression of a trait when paired with an identical gene is called:
A)recessive.
B)mutated.
C)recombinant.
D)dominant.

Question

Quizplus · Accepted Answer

A recessive gene is one that only affects the phenotype of an individual when there are two copies of that recessive gene. In other words, if a person inherits one copy of the gene from one parent and a different copy from the other parent, the dominant gene will be expressed in the phenotype instead of the recessive gene. The recessive gene will only be expressed if there are two copies of it, one from each parent.

A Gene That Only Influences the Expression of a Trait