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Chapter 3
3.3 Cont. Mitosis
| Term | Definition |
|---|---|
| Mitosis | A stage of the cell cycle where a cell divides and splits into two identical daughter cells. |
| Stages of Mitosis | Prophase, Metaphase, Anaphase, Telophase, and Cytokinesis |
| Prophase | The nucleus breaks apart and is no longer visible. Chromatin has condensed and organized itself into chromosomes. Centrosomes begin to move part and spindle formation begins. |
| Metaphase | The chromosomes become attached to a spindle fiber. Chromosomes line up at the middle of the cell. |
| Anaphase | Chromosomes are pulled apart and moved towards the centromeres. When chromosomes are pulled apart they are referred to as sister chromatids. |
| Telophase | The cell begins to form into two different cells. The nucleus begins to reform and the chromosomes will relax and unwind to form chromatin. |
| Cytokinesis | Cytokinesis is not "true" stage of mitosis. Cytokinesis refers to the splitting of the cytoplasm and organelles between the two new cells. |
| Importance of Mitosis | Mitosis allows our bodies to repair damaged tissues due to an injury and is why we grow during childhood. |