When Heritability Is 100%, the Environment Plays

Multiple Choice

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.