试题与答案

下列各项中属于反式作用因子的是A.启动子 B.增强子 C.沉默子 D.转录因子

题型:单项选择题

题目:

下列各项中属于反式作用因子的是

A.启动子

B.增强子

C.沉默子

D.转录因子

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析: 由“通常被认为是老年病的发病年龄有很大的跨度,正是这一点促使研究者展开了这项研究”可知“老年病的发病年龄”只是促使这项研究展开的一个出发点,并非是证明人类提前衰老的原因。因此A项...

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