下列有关核酸的变性与复性的正确叙述是 A不同长度的dna分子变性后在合适温度下复性所用的时间基本相同 B热变性后的dn A经缓慢冷却后可 Template




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tomski下列有关核酸的变性与复性的正确叙述是 a不同长度的dna分子变性后在合适温度下复性所用的时间基本相同 b热变性后的dn coloring