Which situation is the most likely result of directional selection in a
population?
OA. Most limpet shells are dark or light in color and not an
intermediate shade.
OB. Environmental changes cause young frogs to have an
intermediate weight.
OC. Environmental changes cause birds with larger beaks to become
more common.
OD. Most adult females have an average height.

Question

10-06-2024
Biology

Answered

Which situation is the most likely result of directional selection in a
population?
OA. Most limpet shells are dark or light in color and not an
intermediate shade.
OB. Environmental changes cause young frogs to have an
intermediate weight.
OC. Environmental changes cause birds with larger beaks to become
more common.
OD. Most adult females have an average height.

Answer :

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GinnyAnswer GinnyAnswer · Answer 1 · 2024-06-10T18:13:11-04:00

Final answer:

Directional selection favors one end of phenotypic variation in a population due to environmental changes, as seen in the evolution of peppered moths in England during the Industrial Revolution.

Explanation:

Directional selection is a type of natural selection that occurs when environmental changes favor phenotypes at one end of the existing variation spectrum. An example is the evolution of peppered moths in England during the Industrial Revolution, where lighter moths became more visible due to pollution, leading to an increase in the darker melanic form. This type of selection results in a shift in the population's genetic variance towards the favored phenotype.

Learn more about Directional selection in populations here:

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