When heritability is 100%, the environment plays:
A)no role in the expression of the trait.
B)a role in the expression of a trait, but it is a small one.
C)a role in the expression of a trait, but it cannot be measured.
D)no role in variation in the trait among individuals.
E)a role in variation in the trait among individuals, but it cannot be measured.

Question

Quizplus · Accepted Answer

When heritability is 100%, it means that all variation in the trait among individuals is due to genetic differences, and there is no role for environmental factors. Therefore, D is the correct choice.

When Heritability Is 100%, the Environment Plays