BODY CARE

Now, during anaphase, the two sister chromatids of each chromosome are pulled apart by the spindle and dragged by their kinetochores toward opposite poles of the cell (i.e., toward the oppositecentrosomes). The movement results from a shortening of the spindlemicrotubules. Each chromosome is pulled along by its centromere. Formally, this phase begins when the duplicated centromeres of each pair of sister chromatids separates, and the resulting "daughter chromosomes" begin moving toward the poles. As the separated chromosomes move away from each other toward the poles, the cell elongates and the poles themselves move further apart.