Mitosis: An Interactive PowerPoint

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Mitosis: An Interactive PowerPoint

  1. 1. Mitosis By: Ashley Bryan
  2. 2. What is Mitosis?
  3. 3. Mitosis (IPMAT) <ul><li>I nterphase </li></ul><ul><li>P rophase </li></ul><ul><li>M etaphase </li></ul><ul><li>A naphase </li></ul><ul><li>T elophase </li></ul>
  4. 4. Interphase <ul><li>Cell is preparing to divide </li></ul><ul><li>Chromosomes are not clearly visible under a light microscope (decondensed) </li></ul><ul><li>Genetic material doubles </li></ul>
  5. 5. Prophase <ul><li>Individual chromatids pair up to form a chromosome </li></ul><ul><li>Chromatin begins to condense and becomes visible </li></ul><ul><li>Centrioles begin to move to opposite sides of the cell </li></ul><ul><li>Nucleolus disappears </li></ul><ul><li>Mitotic spindle begins to form </li></ul>
  6. 6. Metaphase <ul><li>Spindle fibers attach to chromosomes at the centromere </li></ul><ul><li>Chromosomes line up in the middle of the cell (metaphase plate) </li></ul><ul><li>Homologous chromosomes do not associate </li></ul>
  7. 7. Anaphase <ul><li>Paired chromosomes separate (move apart) at the kinetichores and move to opposite poles of the cell </li></ul><ul><ul><li>Movement is due to spindle fiber contraction </li></ul></ul>
  8. 8. Telophase/Cytokinesis <ul><li>Chromosomes become decondensed and are no longer visible under a light microscope </li></ul><ul><li>Spindle fibers disintegrate </li></ul><ul><li>Nuclear membrane reforms </li></ul><ul><li>Cleavage furrow created in order to split the starting cell into two separate cells </li></ul><ul><ul><li>This actually happens during cytokinesis but telophase and cytokinesis are usually combined when discussing them </li></ul></ul>
  9. 10. Which picture represents interphase?
  10. 11. Which picture represents prophase?
  11. 12. Which picture represents metaphase?
  12. 13. Which picture represents anaphase?
  13. 14. Which picture represents telophase/cytokinesis?

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