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单选题

增强子的特点的是()。

发布日期:2021-06-12

增强子的特点的是()。
A

增强子增加启动子的转录活性

B

增强子单独存在可以启动转录

C

增强子不能位于结构基因内

D

增强子的方向其功能有较大的影响

E

增强子不能位于启动子内

试题解析

增强子

增强子是DNA上一小段可与蛋白质结合的区域,与蛋白质结合之后,基因的转录作用将会加强。增强子可能位于基因上游,也可能位于下游。且不一定接近所要作用的基因,这是因为染色质的缠绕结构,使序列上相隔很远的位置也有机会相互接触。

中文名
增强子
性质
生物
外文名
enhancer
又称
强化子

点的

点的,拼音diǎn de,谓白色小点。

中文名
点的
条目
点的
注音
ㄉㄧㄢˇ ㄉㄜ
拼音
diǎn de

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