cenogenesis, kenogenesis, caenogenesis, cainogenesis, kainogenesis(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)
The embryotic development of cross-species structures or characteristics.
Caenogenesis is the introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species, as opposed to palingenesis. Notable examples include the addition of the placenta in mammals. Caenogenesis constitutes a violation to Ernst Haeckel's biogenetic law and was explained by Haeckel as adaptation to the peculiar conditions of the organism's individual development. Other authorities, such as Wilhelm His, Sr., on the contrary saw embryonic differences as precursors to adult differences.
The numerical value of caenogenesis in Chaldean Numerology is: 1
The numerical value of caenogenesis in Pythagorean Numerology is: 8
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"caenogenesis." Definitions.net. STANDS4 LLC, 2017. Web. 15 Dec. 2017. <http://www.definitions.net/definition/caenogenesis>.