单词：kainogenesis 

名词

• 
  [1.n.kainogenesis] (同义词:[cenogenesis( n. [生物]新性发生 )]  [kenogenesis( n. [生物]新性发生 )]  [caenogenesis( n. [生物]新性发生 )]  [cainogenesis( n. [生物]新性发生 )]  [kainogenesis( n. [生物]新性发生 )]  )
• 
  注释列句：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)
• 上位词 -> [growth( n. 生长, 种植, 栽培, 发育, 等比级数 )]  [organic_process]  [process( n. 过程, 作用, 方法, 程序, 步骤, 进行, 推移 vt. 加工, 处理 )]  [physical_entity]  [entity( n. 实体 )]