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人教版高中生物必修二“遗传与变异”中有一模型建构实验,该实验模拟非同源染色体之间的自由组合以及非姐妹染色单体之间的交叉互换,从而造成了配子中染色体组成的多样性,加上雌雄配子相互结合具有随机性,由此进一步可推测出子代的多样性,即有了“一母生九子,连母十个样”的结论。如果教师的理论讲授能结合有趣的模拟实验,即课堂上给学生时间模拟子代多样性的实验,学生通过亲自模拟操作,化抽象为具体,就会更容易接受和理解
PEP version of high school biology compulsory 2 “genetics and mutation ” in a model construction experiment, the experiment simulated non-homologous chromosomes between the free combination and non-sister chromatid cross-exchange, resulting in gametes The diversity of chromosome composition, combined with the random combination of male and female gametes, further predicts the diversity of offspring, that is, there is a conclusion that “a mother nine children, even the mother ten samples ”. If the teacher’s theory of teaching can be combined with an interesting simulation experiment, that is, experimenting with the simulation of children’s age in class for students’ time in class, the students will be more receptive and understandable through hands-on simulation and abstraction