Anaphase | Biology | Britannica
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External Websites Ask the Chatbot a Question Written and fact-checked by Britannica Editors Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Britannica Editors History Table of Contents Table of Contents Ask the Chatbotanaphase, in mitosis and meiosis, the stage of cell division in which separated chromatids (or homologous [like] chromosome pairs, as in the first meiotic division) move toward the opposite poles of the spindle apparatus. Anaphase is preceded by metaphase, in which the chromosomes line up along the midline of the cell, and is followed by telophase, which is the final step before the cell splits into two daughter cells.
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2 of 2In anaphase of mitosis and anaphase II of meiosis, the abrupt shortening of the spindle microtubules separates each chromatid into a pair of chromosomes and pulls them to opposite ends of the cell. This ensures that each of the daughter cells will receive a complete set of chromosomes. In anaphase I of meiosis, it is the homologous chromosome pairs that are separated. The polar movement of the chromosomes or chromosome pairs is accomplished by the removal of tubulin proteins from specific microtubules of the spindle. As the chromosomes or chromosome pairs are migrating, the cell itself begins to elongate and the cell membrane starts to pinch at the midline.
The Editors of Encyclopaedia Britannica This article was most recently revised and updated by Melissa Petruzzello.Tag » What Happens During Anaphase Of Mitosis
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