Biology CLEP Prep Practice Exam

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Prepare for the Biology CLEP Test with comprehensive flashcards and multiple choice questions. Each question comes with explanations and hints to ensure a full understanding. Boost your exam readiness today!

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

Habitat fragmentation
Migration
Natural selection
Genetic drift

The correct answer is: 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.