atgcu碱基的化学式?它们之间的氢键是怎么形成的?为什么at是两根,gc是三根�? 知乎 Template




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tomskiatgcu碱基的化学式?它们之间的氢键是怎么形成的?为什么at是两根,gc是三根�? 知乎 coloring