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【单选题】
关于碱基配对,下列哪项是错误的:
A.
嘌呤与嘧啶相配对, 比值相等
B.
A与T(U), G与C相配对
C.
A与G, C与T相配对
D.
A与T之间有两个氢键, G与C之间有三个氢键
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