The process by which new species originate. Speciation involves either a change in an organism, or divergence of a population that results in the formation of two new species; both are the result of evolution. Over many generations, natural selection operates within the separated groups to produce gradually increasing differences. New species can be said to have evolved when individuals of the separated groups are no longer capable of interbreeding. See also species.
Related category ORIGIN AND EVOLUTION OF LIFE
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