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English word anagenesis comes from English -genesis (Origin. Production.), English ana-
-genesis (English)
Origin. Production.
ana- (English)
Again. Apiece (Can we add an example for this sense?). Backward. Excessive. On. Up.
anagenesis (English)
The evolution of a new species by the large scale change in gene frequency so that the new species replaces the old rather than branching to produce an additional species.