cainogenesis

• Nom désignant l'apparition, au cours du développement embryonnaire, de caractères ou de structures absents de l'histoire évolutive antérieure d'une lignée ou d'une espèce, comme par exemple l'apparition du placenta dans l'évolution des mammifères.

A noun referring to the introduction during embryonic development of characters or structures not present in the earlier evolutionary history of the strain or species, such as the addition of the placenta in mammalian evolution.

indénombrable

1. Introduction of new traits in developmentC2formalscientific

   The introduction during embryonic development of characters or structures not present in the earlier evolutionary history of the strain or species, such as the addition of the placenta in mammalian evolution.

   Cénogenèse

   • The evolution of the placenta is a classic example of cainogenesis in mammals.
   • Cainogenesis explains how new features can appear in embryos without a direct ancestral precedent.
   • Researchers study cainogenesis to understand how developmental pathways can be modified over evolutionary time.

   Synonymescaenogenesiscenogenesiskainogenesiskenogenesis