Anaphase is the phase of the mitotic and meiotic cell division. In this phase of the cell division, chromosomes split and move towards the opposite poles. Thus, option B is correct.
Anaphase is the third stage of cell division, preceded by the prophase and the metaphase. In this stage, the chromosomes aligned before start splitting and move towards the opposite poles of the cells. This causes the cell to elongate and prepares itself to divide in the next step.
Therefore, in anaphase, the aligned chromosomes start splitting.
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