To correctly order the events during mitosis, we typically follow these stages:
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Prophase: Chromatin condenses into visible chromosomes, and the nuclear envelope begins to break down. The spindle apparatus starts to form.
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Metaphase: Chromosomes align at the metaphase plate (the cell's equatorial plane). Spindle fibers attach to the centromeres of the chromosomes.
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Anaphase: The sister chromatids are pulled apart and move toward opposite poles of the cell, as the spindle fibers shorten.
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Telophase: The separated chromosomes reach the poles of the cell. The nuclear envelope re-forms around each set of chromosomes, which begin to de-condense back into chromatin.
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Cytokinesis: Although technically not a part of mitosis itself, cytokinesis is often included in the discussion. It involves the division of the cytoplasm, resulting in two separate daughter cells.
So, the order of events during mitosis is:
- Prophase
- Metaphase
- Anaphase
- Telophase
- (Cytokinesis)
Let me know if you need more information about any specific stage!