View source for Catagenesis (biology)



'''Catagenesis''' is an archaic term from evolutionary biology referring to evolutionary directions that were considered "[[wiktionary:retrogressive|retrogressive]]."  It was a term used in contrast to [[anagenesis]], which in present usage denotes the evolution of a single population into a new form without branching lines of descent. [[Cladogenesis]] is the term used for branching lines of descent, i.e., when the evolutionary origin of a new form is not accompanied by the disappearance of the ancestral form.

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[[Category:Evolutionary biology]]


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