Mitosis

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Mitosis

  1. 1. MITOSIS!<br />Thurs. Sept. 23, 2010<br />
  2. 2. Review<br />Mitosis has 4 stages:<br />Prophase<br />Metaphase<br />Anaphase<br />Telophase<br />Mitosis is the process by which the nucleus of a cell divides into TWO IDENTICAL nuclei<br />
  3. 3. Why is it important that the nucleus divides into IDENTICAL nuclei?<br />Remember: the nucleus contains the genetic information<br />GENES! (section of DNA)<br />Genes are located on chromosomes, which are long linear strands of DNA<br />So the cell has all the information it needs to create NEW cells!<br />
  4. 4. On the back of your mitosis worksheet:<br />PROPHASE<br />METAPHASE<br />ANAPHASE<br />TELOPHASE<br />
  5. 5. PROPHASE<br />Chromosomes have made a copy (replicated) and are now visible<br />
  6. 6. METAPHASE<br />Replicated chromosomes line up in the centre of the cell<br />
  7. 7. ANAPHASE<br />The identical chromosomes separate and begin to move toward opposite ends of the cell<br />
  8. 8. TELOPHASE<br />Chromosomes are harder to see as a membrane forms around them<br />Now what happens?<br />
  9. 9. Cytokinesis!<br /><ul><li>After the nucleus has divided, it is followed by the cytoplasm dividing</li></li></ul><li>HAND MODEL FOR MITOSIS<br />

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