kenogenesis

• مصطلح أحيائي يعني ظهور صفات أو تراكيب جديدة أثناء التطور الجنيني لم تكن موجودة في التاريخ التطوري السابق للنوع، مثل ظهور المشيمة في تطور الثدييات.

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.

غير معدود

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.

   تكيف جنيني

   • 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.

   المرادفاتcaenogenesiscainogenesiscenogenesiskainogenesis