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结构基因序列中增强子的作用特点为( )

单选题
2021-07-18 12:27
A、有明显的方向性,从 5’→ 3’方向
B、有明显的方向性,从 3’→ 5’方向
C、只能在转录基因的上游发生作用
D、只能在转录基因的下游发生作用
E、有组织特异性
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正确答案
E

试题解析
E

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