During which stage of meiosis, do the sister chromatids begin to move towards the poles?
Question
During which stage of meiosis, do the sister chromatids begin to move towards the poles?
Solution
The sister chromatids begin to move towards the poles during the Anaphase II stage of meiosis. Here's a step-by-step breakdown of the process:
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Prophase II: The nuclear envelope breaks down and the spindle starts to form in each haploid daughter cell from meiosis I. The chromosomes condense and become visible.
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Metaphase II: The chromosomes align at the equator of the cell, attached to the spindle fibers at their kinetochores.
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Anaphase II: This is the stage you're asking about. The sister chromatids are pulled apart by the shortening of the spindle fibers and begin to move towards the opposite poles of the cell.
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Telophase II: The chromosomes decondense and are enclosed in a nuclear envelope at each pole to form four haploid daughter cells.
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Cytokinesis: The cytoplasm divides, resulting in four haploid daughter cells, each with a unique combination of chromosomes.
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