6.10 Speciation

. Speciation The process by which one species evolves into one or more different species is called speciation. A.E. Emerson defines species as a ‘genetically distinctive, reproductively isolated natural population’. Speciation is a fundamental process in evolution. Evolution of a new species in a single lineage is called an agenesis / phyletic speciation. If one species diverges to become two or more species it is cladogenesis or divergent evolution.