Question

couses of speciatin

Answer 1

Allopatric speciation is caused by the physical isolation of two populations of the same species by geological barriers such as mountains, deserts, swamps and ice fields. Two populations of same species may start to evolve independently, accumulating mutations, and undergoing genetic drift as well as natural selection.

Answer 2

Causes of speciation. In the fruit fly example, some fruit fly larvae were washed up on an island, andspeciation started because populations were prevented from interbreeding by geographic isolation. ... However, speciation might also happen in a population with no specific extrinsic barrier to gene flow.
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