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Kainogenesis

nounverified·updated May 18, 2026

the 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

Framework senses

Wordset Dictionary1 senseview framework →
§1
the 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