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What causes sudden behavior changes?

What causes changes in mating behavior and eventually leads to separate species?

  • Answer:

    Speciation requires that the two incipient species be unable to produce viable offspring together or that they avoid mating with members of the other group. In some cases this may be caused by a physical barrier that makes the groups unable to mate such as a river or mountain range. Over time the elimination of those across the barrier as mates leads to speciation where the two groups become different species.

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