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10. Which of the following statements is correct?

A. The finches are experiencing disruptive selection, with both larger and smaller beaks being favored at different times.

B. The finches are experiencing stabilizing selection toward an average-sized beak that can accommodate both larger and smaller seeds.

C. The finches are experiencing directional selection toward larger beaks.

D. The strength and direction of natural selection on beak size fluctuates depending on the prevailing environmental conditions.

E. The inconsistency in average beak size from year to year indicates that evolution is not occurring in the finches.

11. Pick one of the incorrect statements from Number 10 and explain why it is incorrect.

Answer :

Final answer:

The correct statement is B. The finches are experiencing stabilizing selection toward an average-sized beak that can accommodate both larger and smaller seeds. Statement E is incorrect because the inconsistency in average beak size from year to year is actually an indication of evolution occurring.

Explanation:

The correct statement is B. The finches are experiencing stabilizing selection toward an average-sized beak that can accommodate both larger and smaller seeds. Stabilizing selection occurs when individuals with intermediate traits are favored and extreme traits are selected against. In this case, finches with average-sized beaks are more successful because they can efficiently eat a variety of seed sizes.

Statement E is incorrect because the inconsistency in average beak size from year to year is actually an indication of evolution occurring. Evolution is a gradual process, and slight changes in beak size over time are evidence of adaptation to different environmental conditions.

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