click below
click below
Normal Size Small Size show me how
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. |