The most abundant bases are cytosine, thiamine , and uracil ( pyrimidines ) and adenine and guanine ( purines ) .

  • 最丰富的碱基是胞嘧啶, 胸腺嘧啶, 尿 嘧 啶,腺嘌呤和鸟嘌 呤.

  • 互联网 2020-04-15 17:52:49

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