Multiple choice

The source of Darwinian variations is

  1. gene mutations

  2. gene recombination

  3. hormones

  4. natural selection
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Gene recombination during sexual reproduction creates new combinations of existing genes, producing variations Darwin observed. While mutations create new alleles, recombination is the primary source of variations in populations. Natural selection acts on variations but doesn't create them.

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