In an area of yearly rainfall, (dry and wet years), biologists measured the chan

Question

In an area of yearly rainfall, (dry and wet years), biologists measured the changes in beak size in a population of a ground finch species. The finches with alleles for large beaks reproduced better in years where rainfall was plentiful and finches with alleles for small beaks reproduced better in years where rainfall was scanty. Based on your understanding of the readings, the situation described above would tend to do which one of the following: cause gene flow in the beak population, lead to stabilizing selection in the beak population, cause genetic drift in the beak population, cause gene flow in the beak population, lead to uniformity in the beak population, or preserve genetic variation in the beak population.

Explanation / Answer

preserve genetic variation in the beak population

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