Everylivingthinghasg的精選

問題詳情：      Everylivingthinghasgenes.Genescarryinformation.  16  Theymakesurethathumansgivebirthtohumansandcowsgivebirthtocows.Theyalsomakesurethatadogdoesn’tgivebirthtoafrog,oranelephant...