Can natural selection cause new variation?

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asked Oct 20, 2020 34.0k views

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Nikita Kukushkin · Answer 1 · 2020-10-24T22:57:18+0000

Genetic variation is essential for natural selection because natural selection can only increase or decrease frequency of alleles that already exist in the population. Genetic variation is caused by: mutation. random mating between organisms.

Can natural selection cause new variation?

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