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One of Kettlewell's predictions was that the frequency of dark-colored moths would increase in polluted areas due to natural selection. He hypothesized that the darker moths would have a survival advantage against predation on soot-darkened tree trunks, while lighter moths would be more easily spotted by predators. This prediction was supported by his experiments, which demonstrated a correlation between industrial pollution and the prevalence of melanistic moths in certain regions.

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1mo ago

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