You encounter a population of Darwin’s finches, in which you record many finches

Question

You encounter a population of Darwin’s finches, in which you record many finches with either very large or very small beaks, but very few have medium-sized beaks. You also found that medium-beak finches are more likely to be heterozgyotes. Which type of selection do you expect to be responsible for this pattern of distribution?

Frequency-dependent selection

Balancing selection

Disruptive selection

Directional selection

Frequency-dependent selection

Balancing selection

Disruptive selection

Directional selection

Explanation / Answer

Which type of selection do you expect to be responsible for this pattern of distribution?

C) Disruptive selection

Disruptive selection describes the changes in population genetics in which extreme values for a trait are favored over intermediate values.

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