单选题 Which of the following DNA polymerase is responsible for the replication of mitochondrial DNA?以下哪一种DNA聚合酶负责线粒体DNA的复制？

单选题 下列哪个是Z型DNA的特征？

单选题 下列哪个不是B型DNA的特征？

单选题 The pentose sugar of the DNA is __ DNA的戊糖是 __.

单选题 The lagging strand primers are removed and the gaps filled by DNA polymerase Ⅰ。 去除滞后链引物，DNA聚合酶Ⅰ填充间隙 。

单选题 The leading strand and the lagging strand are englated by DNA polymerase __.前导链和后随链被DNA聚合酶III连接

单选题 The base of DNA in A, G, C, T__.

单选题 During the DNA replication the positive supercoiling formed by unwinding parents DNA hase to be relieved by the在DNA复制过程中，父母DNA形成的正超螺旋必须由拓扑异构酶展开。

单选题 The strands of DNA are joined by hydrogen bonding between the bases on opposite strands, to form base pairs.DNA链由相0链上的碱基之间的氢键连接，形成碱基0。