格里菲斯将加热杀死的S型肺炎双球菌与R型活菌混合培养,得到了R型S型两种菌落,从变异的角度分析,来源于答案是来源于基因重组,但我有疑问,S型菌的DNA怎么就跟R型菌的DNA重组了,能生成S型菌
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/03 18:55:12
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