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A full set of sister chromatids is created during the S subphase of interphase, when all the DNA in a cell is replicated. Identical chromosome pairs are separated into two different cells during mitosis, or cellular division.
During mitotic phase, the cell will give rise to two daughter nuclei, each with identical genetic content. Cytokinesis is that phase in the cell cycle wherein other cellular components are separated resulting in the production of two daughter cells from the original (parent) cell. Cytokinesis following . In animal cells (and in some plant cells) it is marked by a constriction of the cell membrane called the cleavage furrow. In most plant cells it happens when an expanding cell plate forms across the center of the cytoplasm called the phragmoplast.