Asked by d

esearchers plotted a distribution curve for the leg length in a population of birds, with length from short to long on the x-axis. The curve shifts to the right after a disturbance. Which statement is correct abou natural selection in this population of birds.

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Answered by GPT-5 mini AI
The population experienced directional natural selection favoring longer legs. After the disturbance, individuals with longer legs had higher fitness, so the mean leg length (and the frequency of alleles for longer legs) shifted to the right. (Note: a similar shift could also arise from non‑selective causes like migration or drift, but the pattern shown is characteristic of directional selection.)