Multiple choice

The new alleles in an individual's gene pool is/are introduced by

  1. mutation

  2. natural selection

  3. gene flow

  4. mutation and gene flow
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Both mutation and gene flow can cause new variations of genes to enter a population's gene pool. However, only mutation can introduce them into the gene pool of an entire species.

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