kenogenesis

• Terme biologique désignant l'apparition de nouveaux caractères ou structures au cours du développement embryonnaire, absents de l'histoire évolutive antérieure de l'espèce, par exemple l'apparition du placenta dans l'évolution des mammifères.

A biological term referring to the introduction of new characters or structures during embryonic development that were not present in the earlier evolutionary history of a species, such as the addition of the placenta in mammalian evolution.

indénombrable

1. Embryonic adaptationC2formalscientific

   The introduction of new developmental features or structures during embryonic growth that were not present in the earlier evolutionary history of a species or lineage.

   Cénogenèse

   • The evolution of the placenta in mammals is a classic example of kenogenesis.
   • Kenogenesis can result in temporary embryonic structures that aid survival.
   • Scientists study kenogenesis to understand how new traits emerge during development.

   Synonymescaenogenesiscainogenesiscenogenesiskainogenesis