2019-2020学年人教版高中英语选修8同课异构课件:Unit2 Cloning 单元小结 同课异构(4)
2019-2020学年人教版高中英语选修8同课异构课件:Unit2 Cloning  单元小结 同课异构(4)第5页

 There are different types of cloning, and cloning technologies can be used for other purposes besides producing the genetic twin of another organism. The three types of cloning technologies are: (1) recombinant DNA technology or DNA cloning(基因重组克隆技术) (2) reproductive cloning(再生克隆技术) (3) therapeutic cloning (干细胞疗法克隆技术)