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caenogenesis

美[ˌsɪnə'dʒenəsɪs] 英['siːnə'dʒenɪsɪs]

n. [生物]新性发生

近义词：cenogenesis，cainogenesis，kainogenesis，kenogenesis，

Noun

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)

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