一个双链DNA分子的鸟嘌呤占整个DNA分子碱基的27%,其中一条链上的

 一个双链DNA分子的鸟嘌呤占整个DNA分子碱基的27%,其中一条链上的腺嘌呤占这条链碱基的28%,那么,另一条链上的腺嘌呤占整个DNA分子碱基的比例是         

A.9%                B.18%         C.23%      D.24%

答案

A

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