Subject - Biology:

Basics

MCQ - 396-1880

Question:

The graph shows the distribution of fur color in a population of rodents. Over time, the environment changes so that it includes only light and dark rocks, with little vegetation. How will natural selection affect the distribution of phenotypes in this population?

The mean will shift toward the right, and the center of the curve will be higher.
The mean will shift toward the left, and the center of the curve will be higher.
The mean will shift toward the right, and the center of the curve will be lower.
The mean will shift toward the left, and the center of the curve will be higher.

Correct Answer: D

Explanation:

Because of the changing environment, rodents at both ends of the curve have greater fitness. Therefore, the frequency curve will become higher at the tips and lower near the current mean. However, the mean will not shift because the average phenotype will still be intermediate in color

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619 MCQ for effective preparation of the test of Basics of Biology section.

Read the MCQ statement: The graph shows the distribution of fur color in a population of rodents. Over time, the environment changes so that it includes only light and dark r .... population? , keenly and apply the method you have learn through the video lessons for Basics to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 396-1880.

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Solve the question for MCQ No. and decide which option (A through D/E) is the best choice to answer the MCQ, then click/tap the blue button to view the correct answer and it explanation.

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