下列技術依據DNA分子雜交原理的是（　　）                                  ...

問題詳情：

下列技術依據DNA分子雜交原理的是（　　）                                              

①用DNA分子探針診斷疾病                                                                   

②重組DNA導入受體細胞                                                                       

③親子鑑定                                                                                        

④目的基因與運載體結合形成重組DNA分子．                                              

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

【回答】

解：①用DNA分子探針診斷疾病，即基因診斷，原理是DNA分子雜交，具有快速、靈敏、簡便等優點，①正確；                                                                             

②重組DNA導入受體細胞的方法有農桿菌轉化法、顯微注*法等，沒有依據DNA分子雜交原理，②錯誤；                 

③親子鑑定是依據DNA分子雜交原理，鑑定親代與子代DNA分子中鹼基排列順序，③正確；                 

④目的基因與運載體結合形成重組DNA分子依據的原理是鹼基互補配對原則，④錯誤．                  

故選：B．                                                                                          

知識點：生物技術的安全*和倫理問題

題型：選擇題