Question

What change is observed in a distribution curve for a trait affected by directional
selection? (1 point)
o it shifts to the right and to the left.
o it shifts either to the right or to the left.
o it shifts to the right.
o it shifts to the left.

Answer 1

The change that is observed in a distribution curve for a trait affected by directional selection is that it shifts either to the right or to the left, which is the second option.

What is directional selection?

Natural selection is process by which heritable traits conferring survival and reproductive advantage to individuals tend to be passed on to succeeding generations and become more frequent in a population.

Natural selection has the following types;

1. Directional selection
2. Disruptive selection
3. Stabilizing selection

Directional selection, is a type of natural selection in which an extreme phenotype is favored over other phenotypes. This causes the allele frequency to shift over time in the direction of that phenotype.

Therefore, the change that is observed in a distribution curve for a trait affected by directional selection is that it shifts either to the right or to the left.

Learn more about directional selection at: https://brainly.com/question/12226774

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