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【单选题】
关于转录的叙述哪项正确？（）A.
转录时RNA的延长方向是3’→5’
B.
编码链可转录成RNA
C.
不同基因的模板链并非总在同一DNA上
D.
转录出的RNA和模板链序列相同
E.
以上都错误
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A.
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B.
Parent child.
C.
Shop assistant and customer.
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A.
help, in
B.
help,on
C.
assist ,in
D.
assist ,on
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A.
an actor
B.
a shop assistant
C.
a doctor
D.
a policeman
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A.
assist; with
B.
help; to
C.
assist; in
D.
help; with
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