在新编高中《生物学》遗传和变异一章中,增加了关于性别决定和伴性遗传的内容。这些知识对扩大学生遗传学知识领域是很必要的,对提倡优生,宣传新婚姻法中为什么要禁止直系血亲与三代以内旁系血亲互相通婚等更具有说服力。怎样才能把“性别决定和伴性遗传”深入浅出地教给学生,让他们既易理解又能牢固掌握呢?这确是值得我们生物教师探讨的问题。为 In the new chapter on biology, genetics and variation in high school, there has been an increase in the content of sex determination and sex-linked inheritance. This knowledge is necessary to expand students’ knowledge in genetics field. It is more persuasive to promote eugenics and publicize why the newborn marriage law forbids direct blood relatives from interbreeding with paternal blood relatives within three generations. How can we teach students “easy to understand and firmly grasp” the principle of “sex determination and sex genetics”? This is indeed a question that our biological teachers should explore. for