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'''Speciation''' is the process by which new species are thought to arise, possibly by [[Darwin-Wallace evolution]].  It occurs due to [[natural selection]] and separation of populations of the same species, allowing allele frequencies in the two groups to change independently.

'''Speciation''' one suggested process by which new species are thought to arise, possibly by [[Darwin-Wallace evolution]].  It occurs due to [[natural selection]] and separation of populations of the same species, allowing allele frequencies in the two groups to change independently.  See [[evolution]] for a detailed dissection of the many problems of this theory.

==Species==

==Species==