is pulled is pulled towards each opposite pole by the spindle fibers by a ratchet-like mechanism. This process requires energy so the ATP store is now used up. They split apart by the centromere breaking into two. Each centromere divides into two so that each chromatid has its own centromere.In Telophase, the chromatids become the new chromosomes of the daughter cells. Once the chromatids are at the poles of the cell they unwind into chromatin again, now becoming hard to see once again. The spindle fibers now disintegrate and new nuclear membranes form around the new groups of chromatin making two new nucleus'. The centrioles now also replicate and divide their numbers evenly around each nucleus. Now the cell is ready to divide. Mitosis is now over. The cell is now ready to divide, by the process known as Cytokinesis....
