The process in cell division by which the nucleus divides, typically consisting of four stages, prophase, metaphase, anaphase, and telophase, and normally resulting in two new nuclei, each of which contains a complete copy of the parental chromosomes.

• 有丝分裂细胞分裂过程，其间细胞核分裂典型分为四步：前期、中期、后期和末期，并正常分裂成两个细胞核，每一个都含有母染色体的完全内涵