中等职业学校种植类专业基础学科《植物生产与环境农业生物技术》第一章《植物遗传的理论基础》第一节《遗传的三大规律》中,基因的自由组合规律讲的是高等生物的基因在有性生殖过程中的一种遗传规律:即子一代F1在形成配子时基因的分离和组合现象。因为这一规律的发生就在配子形成即减数分裂过程中,因此 The basic disciplines of cultivation of secondary vocational schools “plant production and environmental agricultural biotechnology” The first chapter “the theoretical basis of plant genetics” The first section “three laws of heredity”, the principle of free combination of genes is higher biological Gene in the process of sexual reproduction of a genetic law: the generation F1 in the formation of gametes gene isolation and combination of phenomena. Because of this law occurs in the formation of gametes that is meiosis process, therefore