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减数分裂是重要的生物学基础知识,因为减数分裂的知识是学好生物生殖、发育和遗传三大规律的基础,如在减数第一次分裂后期同源染色体的分离是“基因分离规律”的细胞学基础;减数第一次分裂前期的四分体时期,同源染色体中非姊妹染色单体之间的交叉互换足“基因的连锁互换规律”的细胞学基础;在减数第一次分裂后期,非同源染色体之间的自由组合是“基因的自由组合规律”的细胞学基础。新课结束之后,进行及时的复习、巩固是完全必要的。
Meiosis is an important basic knowledge of biology, because the knowledge of meiosis is to learn the basis of the three major laws of biological reproduction, development and genetics, such as the separation of homologous chromosomes after the first division of meiosis is “the law of gene isolation ”Cytological basis; premenstrition of the first quarter of the pre-division period, homologous chromosomes non-sister chromatid cross-exchange between the foot“ gene of the law of interchange ”cytology; in the subtraction After the first division, the free combination between non-homologous chromosomes is the cytological basis of “the law of free combination of genes.” After the new class is over, it is absolutely necessary for us to review and consolidate in a timely manner.