下列关于探针标记方法的叙述正确的是 -题库考试答案搜索网

下列关于探针标记方法的叙述正确的是

单选题

2022-04-02 11:46

A、酶促标记法是最常用的标记方法，产生比化学标记法高的敏感性
B、酶促标记法简便、快速、标记均匀
C、末端标记的探针比均匀标记的探针有更高的活性
D、末端标记的探针常用于杂交分析
E、均匀标记的探针主要用于DNA的测序

查看答案

正确答案

试题解析

酶促标记法是最常用的标记方法，可更好地修饰DNA，产生比化学标记法高的敏感性，其缺点是操作较复杂、产量低、成本高。化学标记法简便、快速、标记均勾。从这两大类标记方法已分别衍生出多种标记方法，应根据不同的需要进行选择，各种标记方法最终分别产生均匀标记的探针或末端标记的探针。均匀标记的探针由于每个核酸分子中掺入很多标记的dNTP，因而比末端标记的探针有更高的活性。均匀标记的探针常用于杂交分析，而末端标记的探针主要用于DNA测序。

标签：川北医学院药学专升本分子生物学作业4

感兴趣题目

翻译：With Average or With Particular Average（WA or WPA）（）

（）shall be liable for loss of and damage to the Vessel and／or goods arising or resulting from inaccuracies in stating the description，quantity，weight，measurement or contents.

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

（）are liable to be stoten, pilfered or may damaged due to improper handing or stowage.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。