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1.肺炎双球菌的转化实验、噬菌体侵染细菌的实验都可证明DNA是遗传物质,而蛋白质不是遗传物质。2.证明DNA是否是遗传物质的实验思路:把DNA和蛋白质等物质区分开,直接地、单独地去观察DNA和蛋白质等的作用。3.绝大多数生物(如所有的原核生物、真核生物及部分病毒)的遗传物质是DNA,只有少数生物(部分病毒等)的遗传物质是RNA,所以说DNA是主要的遗传
1. The experiment of transforming pneumococcus and the experiment of bacteriophage infecting bacteria can all prove that DNA is a genetic material and protein is not a genetic material. 2. An experimental idea to prove whether DNA is a genetic material: to distinguish DNA from proteins, and to directly and individually observe the effects of DNA and proteins. 3. The genetic material of most organisms (such as all prokaryotes, eukaryotes, and some viruses) is DNA, and the genetic material of only a few organisms (partial viruses, etc.) is RNA, so DNA is the main inheritance.