Caenogenesis and Kenogenesis

Caenogenesis 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).

Kenogenesis is a synonym for caenogenesis. In some cases you can use "Kenogenesis" instead a noun "Caenogenesis".

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).

Caenogenesis is a synonym for kenogenesis. You can use "Caenogenesis" instead a noun "Kenogenesis".