What change is observed in a distribution curve for a trait affected by directional selection?(1 point) Responses It shifts to the right and to the left. It shifts to the right and to the left. It shifts to the right. It shifts to the right. It shifts either to the right or to the left. It shifts either to the right or to the left. It shifts to the left.
1 answer
In directional selection, the distribution curve for a trait shifts in one direction, either to the right or to the left. The specific direction of the shift depends on which extreme phenotype is favored by the selection pressure. Therefore, the correct response is:
It shifts either to the right or to the left.
