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在现行《生物教师实验手册》第二册第二部分中，关于“物理因素诱导染色体变异”这一选做实验，由于普通中学不具备射线辐射设备和放射性元素，教师无法准备材料和制备染色体制片。笔者认为有必要设计一个普通中学条件容易达到的实验。因为诱导染色体结构变异的因素很多，诱变
In Part II of Part II of the current BI Teachers' Manual, experiments on the “physical factor-induced chromosome aberration” experiment were conducted. Since ordinary secondary schools do not have radiation equipment and radioactive elements, teachers can not prepare materials and prepare dyeing systems sheet. I think it is necessary to design an experiment that is easy to reach in normal middle school. Because of the many factors that induce structural variation in chromosomes, mutagenesis