标准的 PCR过程一般分为变性、复性、延伸三大步,这三大步需要的温度依次是 ()

A、94℃、55℃、72℃
B、72℃、50℃、92℃
C、50℃、92℃、72℃
D、80℃、50℃、72℃
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正确答案:

A

答案解析:

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