Cainogenesis (Noun)
Meaning
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).
Classification
Nouns denoting natural processes.
Examples
- The evolutionary development of the mammalian placenta is a prime example of cainogenesis, as it introduced a novel reproductive strategy not seen in earlier ancestors.
- Cainogenesis played a crucial role in the emergence of complex body plans during the Cambrian explosion, as many animal groups developed new morphological features.
- The origin of the amniotic egg is another instance of cainogenesis, allowing vertebrates to reproduce on land and paving the way for the evolution of terrestrial animals.
- In the context of embryonic development, cainogenesis refers to the formation of novel structures or characters that were not present in the earlier evolutionary history of the species.
- The evolution of the neocortex in mammals is a classic example of cainogenesis, as it introduced a new level of cognitive complexity not seen in earlier vertebrates.