the course of developmental changes in an organism from fertilized zygote to maturity when another zygote can be produced

 
  • 生物體由受精卵發(fā)育到能夠產(chǎn)生受精卵的成熟階段的發(fā)展變化過(guò)程
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan