Mitosis & Meiosis By: Marisa DiCarlo Taylor Raucci
Phases of Mitosis <ul><li>Interphase
-Chromosomes are not visible because they are uncoiled.
Prophase
-The chromosomes coil. The nuclear membrane disintegrates.
Spindle fibers   </li></ul><ul><li>Metaphase
-The chromosomes become aligned.
Anaphase
-The chromatids separate; the number of chromosomes doubles. </li></ul>
Continued .. <ul><li>Telophase
-The cell divides into two.
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Marisa Dicarlo

  1. 1. Mitosis & Meiosis By: Marisa DiCarlo Taylor Raucci
  2. 2. Phases of Mitosis <ul><li>Interphase
  3. 3. -Chromosomes are not visible because they are uncoiled.
  4. 4. Prophase
  5. 5. -The chromosomes coil. The nuclear membrane disintegrates.
  6. 6. Spindle fibers </li></ul><ul><li>Metaphase
  7. 7. -The chromosomes become aligned.
  8. 8. Anaphase
  9. 9. -The chromatids separate; the number of chromosomes doubles. </li></ul>
  10. 10. Continued .. <ul><li>Telophase
  11. 11. -The cell divides into two.
  12. 12. -The chromosomes uncoil. The nucleus reforms. The spindle apparataus disassembles.
  13. 13. G1 Interphase
  14. 14. -The chromosomes have one chromatid. </li></ul><ul><li>G2 Interphase
  15. 15. -The chromosomes have two chromatids each. </li></ul>
  16. 16. -Mitosis
  17. 17. <ul><li>Meiosis </li></ul>
  18. 19. How are Mitosis and Meiosis Different? <ul><li>Mitosis occurs in somatic cells and Meiosis occurs in reproductive cells.
  19. 20. In mitosis, two daughter cells are formed but in meiosis, four daughter cells are formed.
  20. 21. Mitosis helps in growth and in body repairs but meiosis helps in sexual reproduction and regulation of the number of chromosomes . </li></ul>
  21. 22. Continued... <ul><li>In Mitosis, Cytokinesis occurs only once but in Meiosis, Cytokinesis may take place once or twice but depending on the type of cell
  22. 23. Meiosis - Number of Divisions: 2 nuclear and 2 Cytoplasmic divisions
  23. 24. Mitosis - Number of Divisions: 1 division of the nucleus and 1 Cytokinesis. </li></ul>
  24. 25. Why is Mitosis Important to living things? <ul><li>Genetic stability
  25. 26. growth of an organism
  26. 27. Regeneration and cell replacement( damaged cells)
  27. 28. Asexual reproduction </li></ul>
  28. 29. Why is meiosis Important to living things? <ul><li>produce sperm and egg cells which then can combine to produce the diploid zygote.
  29. 30. If meiosis did not occur organisms that reproduce sexually could not produce new offspring.
  30. 31. creates genetic diversity in the population. </li></ul>
  31. 32. How Are Mitosis and Meiosis Similar ? <ul><li>They both occur in Telophase
  32. 33. Both are a type of cell division
  33. 34. Both are involved in DNA replication
  34. 35. They have Interphase, Prophase, Metaphase, Anaphase, and Telophase </li></ul>

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