Biology CLEP Prep Practice Exam 2025 – Your All-in-One Guide to Exam Success!

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What is the main process that drives the process of adaptive evolution?

Habitat fragmentation

Migration

Natural selection

Natural selection is the main process that drives the process of adaptive evolution. It is the process by which certain heritable traits become more or less common in a population over time, depending on how they affect the reproductive success of individuals. Habitat fragmentation (A) can lead to changes in population size and distribution, but it is not the driving force behind adaptive evolution. Migration (B) can introduce new traits into a population, but it does not directly drive the process of adaptive evolution. Genetic drift (D) is a random process that can lead to changes in the frequency of particular traits in a population, but it is not the main process that drives adaptive evolution.

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Genetic drift

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