Mitosis produces identical copies of cells and is involved in growth, cell repair, and asexual reproduction, which is how simple organisms reproduce.

有丝分裂发生在生长、细胞修复和无性繁殖，会复制出一模一样的细胞，这是简单生物体繁殖的方式。

Breaks are repaired using host cell repair mechanisms including non-homologous end joining where there's a loss of genetic information or homology-directed repair where donor DNA introduces a new sequence into the genome.

断裂可通过宿主细胞的修复机制进行修复，包括会丢失遗传信息的非同源末端连接，或通过供体DNA将一段新序列引入基因组的同源介导修复。