A special region of the centromeres of each pair of sister chromatids, the kinetochore, becomes attached to one or a bundle of spindle microtubules and hauling the chromatid toward the spindle pole.
英
美
- 每對姐妹染色單體著(zhù)絲粒的特殊區域有一個(gè)動(dòng)粒結構，與一根或一束紡錘體微管相連。細胞分裂后期，動(dòng)粒結構起到馬達的作用，使相連的微管發(fā)生去裝配并將染色單體拉向紡錘體的兩極。
