The size of the geographical barrier needed to reproductively isolate two populations is dependent on the type of organism. True/false Why do different mutations accumulate in two species once they diverge? Multiple Choice Natural selection favors mutations in one species over another. convergent evolution Once they diverge and become reproductively isolated, mutations form and accumulate separately in the two species. The mutations make the species different. The molecular clock runs at different speeds in different species.
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For some species, a small geographical barrier may be enough for isolation, while for larger animals, a larger barrier may be required. Show more…
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Speciation requires different selective pressures to be applied to groups. True False Allopatric speciation is due to the formation of a prezygotic barrier. True False Allopatric speciation through founder events is related to what mechanism of evolution, besides natural selection? Mutation Non-random mating Migration Genetic drift Sympatric speciation usually results due to the separation of populations ecology environments land masses
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