如图所示为双链dna的平面结构模式图.下列叙述正确的是 A.含图示碱基对数的dna片段结构最稳定的片段中有18个氢键b.沃森和克里克利用 Template




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tomski如图所示为双链dna的平面结构模式图.下列叙述正确的是 a.含图示碱基对数的dna片段结构最稳定的片段中有18个氢键b.沃森和克里克利用 coloring