What change is observed in a distribution curve for a trait affected by directional selection?(1 point)

Question

Responses

It shifts to the right.
It shifts to the right.

It shifts to the right and to the left.
It shifts to the right and to the left.

It shifts to the left.
It shifts to the left.

It shifts either to the right or to the left.

Answer 1

In directional selection, a distribution curve for a trait generally shifts in one direction, either to the right or to the left, depending on which extreme of the trait is favored. Therefore, the correct response is:

It shifts either to the right or to the left.