1. During (A) the centrosomes move to opposite sides of the nucleus, and the chromosomes condense. The nucleus breaks down, and as the cell progresses to (B) , the chromosomes align on the center of the spindle. At (C) the linkage between sister chromatids is broken, and the sisters segregate to opposite poles. As the chromosomes near the poles, the physical process of cell division, called (D) . (8%)

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