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在高中生物必修2第三章第1节“DNA是主要的遗传物质”的教学中,以人类早期对遗传物质的推测为问题源头,通过一系列实验的介绍和分析,让学生体验科学研究的思路和方法,学习科学家的严谨态度和合作精神。对一些实验分析过程提出疑问,最常见的疑问有以下几种:一、肺炎双球菌体内转化实验的疑点1.R型细菌与S型细菌的关系R型细菌是S型细菌的突变体,二者属于同一物种。
In the teaching of high school biology compulsory 2 Chapter III, section 1 “DNA is the main genetic material ”, with human early speculation of genetic material as the source of the problem, through a series of experiments introduced and analyzed to enable students to experience science Research ideas and methods, to learn the rigorous attitude of scientists and cooperation. Some of the experimental analysis of the process of doubt, the most common questions are the following: First, the doubts in the transformation experiment of pneumococcus 1. R-type bacteria and S-type bacteria R-type bacteria are S-type bacterial mutants, two Belong to the same species.