Understanding Non-Adaptive Mechanisms of Evolution

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Questions and Answers

Which of the following mechanisms of evolution does not lead to adaptations?

  • Natural selection
  • Genetic drift (correct)
  • Migration
  • Mutation

What is genetic drift?

  • A random change in allele frequencies from generation to generation (correct)
  • A change in allele frequency due to mutation
  • A change in allele frequency due to migration
  • A change in allele frequency due to natural selection

How does genetic drift affect small populations?

  • It only affects large populations
  • It decreases allele frequencies (correct)
  • It has no effect on allele frequencies
  • It increases allele frequencies

What happens to allele frequencies in genetic drift?

<p>They fluctuate randomly (B)</p>
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Which of the following scenarios is most likely to result in genetic drift?

<p>A small population with low mutation rate (C)</p>
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