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简答题在pH7.0,0.165mol/LNaCl条件下,测得某一DNA样品的Tm为89.3℃。求出四种碱基百分组成。
  • 为(G+C)%=(Tm–69.3)×2.44×%
    =(89.3-69.3)×2.44×%
    =48.8%
    G=C=24.4%
    (A+T)%=1-48.8%=51.2%
    A=T=25.6%
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