Question

A new predator is introduced to an aquatic ecosystem. In a population of fish that live there, very small fish are more easily able to hide from the predators, and very large fish cannot be easily eaten by predators. What type of natural selection is acting on the population, and what will be the expected result?

A.Stabilizing selection: Since both extremes are selected against, the fish population will remain about the same.

B.Disruptive selection: Over time the fish population will change. Medium-sized fish will become rare, small and large fish will be common.

C.Stabilizing selection: Over time the fish population will change. Medium-sized fish will become rare, small and large fish will be common.

D.Disruptive selection: Since both extremes are selected against, the fish population will remain about the same.

Answer 1

Disruptive selection: Over time the fish population will change. Medium-sized fish will become rare, and small and large fish will be common is a type of natural selection that is acting on the given population. So, it's B.

What do you mean by Ecosystem?

An ecosystem may be defined as any place or area where the members of different species or communities live together and interact with one another for the purpose of food, shelter, and space.

As predators are only able to attack the moderate-sized fishes, so the population of moderate-sized fishes may decline in the aquatic ecosystem, while extremely short and large fishes are able to maintain their population at the same pace.

Therefore, the correct option for this question is B.

To learn more about Natural selection, refer to the link:

https://brainly.com/question/14385908

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