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Mitosis

Mitosis. Mitosis. = division of the nucleus and its contents - discovered by Walther Flemming in 1882. Phases of Mitosis. 1) Prophase. - DNA coils to become chromosomes - nuclear membrane disappears - microtubules called spindle fibers grow from centrioles to center of cell. Prophase.

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Mitosis

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  1. Mitosis

  2. Mitosis = division of the nucleus and its contents - discovered by Walther Flemming in 1882

  3. Phases of Mitosis

  4. 1) Prophase - DNA coils to become chromosomes - nuclear membrane disappears - microtubules called spindle fibers grow from centrioles to center of cell

  5. Prophase Centrioles Nucleus with Chromosomes Spindle Fibers

  6. Late Prophase Kinetochore Fibers Polar Fibers

  7. 2) Metaphase - chromosomes line up in center

  8. Metaphase

  9. 3) Anaphase - chromosomes pull apart and move to opposite sides of cell

  10. Anaphase

  11. 4) Telophase - chromosomes uncoil - nuclear membrane reforms

  12. Telophase Chromosomes Uncoil New Nuclear Membrane Forms

  13. Phases of Mitosis

  14. How do you remember the order of the phases of Mitosis? Just remember this phrase……….

  15. PMAT PEE MATT P = Prophase M = Metaphase A = Anaphase T = Telophase

  16. Cytokinesis - cell membrane forms a cleavage furrow and cytoplasm divides - in plants, a cell plate forms between each cell

  17. Cytokinesis Cleavage Furrow

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