Multiple choice

Genetic drift is provided by

  1. deleterious mutation

  2. beneficial mutation

  3. neutral mutation

  4. nearly neutral mutation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A neutral mutation has no harmful or beneficial effect on the organism. Such mutations occur at a steady rate, forming the basis for the molecular clock. In the neutral theory of molecular evolution, neutral mutations provide genetic drift as the basis for most variation at the molecular level.

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