caenogenesis

n. 新性發生

學術名詞

• 新生變態：動物學、植物學
• 新生性變態：動物學、發生學
• 新生型發生：生命科學
• 適應發生：植物學

英文釋義

1. 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)