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nounintroduction 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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Words sounding like good cenogenesis
genesis spermatogenesis parthenogenesis xenogenesis autogenesis morphogenesis teratogenesis psychogenesis pathogenesis palingenesis oogenesis ontogenesis neurogenesis monogenesis metagenesis kenogenesis hypnogenesis heterogenesis hematogenesis haematogenesis glycogenesis gametogenesis epigenesis digenesis cytogenesis cenogenesis caenogenesis blastogenesis biogenesis agenesis