资料来源 : pyDict

新生性变异

资料来源 : WordNet®

cenogenesis
     n : introduction during embryonic development of characters or
         structure not present in the earlier evolutionary history
         of the strain or species (as addition of the placenta in
         mammalian evolution) [syn: {kenogenesis}, {caenogenesis},
          {cainogenesis}, {kainogenesis}] [ant: {palingenesis}]