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xxMikexx [17]
3 years ago
15

Biologists think that speciation generally occurs when: (i) mutation leads to genetic divergence between the two populations, (i

i) a barrier prevents gene flow between two populations of the same species, (iii) pre-zygotic or post-zygotic isolating barriers evolve, (iv) selection or genetic drift leads to genetic differences among the two populations.
Biology
1 answer:
allsm [11]3 years ago
5 0

The answer is: a barrier prevents gene flow between two populations of the same species.

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