【单选题】1条染色体上发生2次断裂后,两断裂点之间的片段旋转180°重接,称为( )。
【单选题】风湿热患者,有严重风湿性心脏病时药物预防期限是
【单选题】风湿热患者,有风湿性心脏病时药物预防期限是
【单选题】某染色体发生两次断裂后,两断裂点之间的片段旋转180°后重接畸变称为( )。
【简答题】A: I failed again in the final test. B: 1 ! But if you study harder, you will pass the exam next time. A: I hope so. B: 2 ! 2. A: What are the good qualities for a successful businessman l...
【单选题】染色体两次断裂后,断点间片段旋转180°后重接,称为
【简答题】阅读理解 One day a rich man and a businessman met in a restaurant. For their lunch they both ordered soup. When it was brought, the rich man tasted it, but the soup was so hot that he burned his mouth and...
【判断题】海关总署负责管理全国海关统计资料。隶属海关负责管理本关区统计资料。
【简答题】1条染色体上发生2次断裂后,两断裂点之间的片段旋转180°重接,称为( )。