caenogenesis

Noun

Meaning

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)

Source: WordNet

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Examples

Caenogenesis represents “the blurring of ancestral resemblances in development,” which are said to be the result of certain adaptations to embryonic life due to environmental changes. Source: Internet

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