下列技术依据DNA分子杂交原理的是（　　）                                  ...

问题详情：

下列技术依据DNA分子杂交原理的是（　　）                                              

①用DNA分子探针诊断疾病                                                                   

②重组DNA导入受体细胞                                                                       

③亲子鉴定                                                                                        

④目的基因与运载体结合形成重组DNA分子．                                              

A．②③                       B．①③                       C．③④                       D．①④

【回答】

解：①用DNA分子探针诊断疾病，即基因诊断，原理是DNA分子杂交，具有快速、灵敏、简便等优点，①正确；                                                                             

②重组DNA导入受体细胞的方法有农杆菌转化法、显微注*法等，没有依据DNA分子杂交原理，②错误；                 

③亲子鉴定是依据DNA分子杂交原理，鉴定亲代与子代DNA分子中碱基排列顺序，③正确；                 

④目的基因与运载体结合形成重组DNA分子依据的原理是碱基互补配对原则，④错误．                  

故选：B．                                                                                          

知识点：生物技术的安全*和伦理问题

题型：选择题