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Cenogenesis   Listen
Cenogenesis

noun
(Also spelled caenogenesis and formerly kenogenesis)
1.
Introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution).  Synonyms: caenogenesis, cainogenesis, kainogenesis, kenogenesis.  Antonym: palingenesis.






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"Cenogenesis" Quotes from Famous Books



... of the facts of embryology we must, of course, take particular care to distinguish sharply and clearly between the primitive, palingenetic (or ancestral) evolutionary processes and those due to cenogenesis.* (* Palingenesis new birth, or re-incarnation (palin again, genesis or genea development); hence its application to the phenomena which are recapitulated by heredity from earlier ancestral forms. Cenogenesis ...
— The Evolution of Man, V.1. • Ernst Haeckel



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