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Margarita Lucio 5th period Feb.10th, 2003

Mitosis. VS. Meiosis. Margarita Lucio 5th period Feb.10th, 2003. Bibliography. www.google.com www.AJKids.com http://www.uwinnipeg.ca/~simmons/meiosis/sld016.htm www.acsamman.edu.jo/~ms/science/7/meiosis.html. What is Mitosis?.

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Margarita Lucio 5th period Feb.10th, 2003

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  1. Mitosis VS. Meiosis Margarita Lucio 5th period Feb.10th, 2003

  2. Bibliography www.google.com www.AJKids.com http://www.uwinnipeg.ca/~simmons/meiosis/sld016.htm www.acsamman.edu.jo/~ms/science/7/meiosis.html

  3. What is Mitosis? • Mitosis is a process that takes place in the nucleus of a dividing cell and that results in the formation of two new nuclei with the same number of chromosomes as the parent nucleus

  4. Phases of Mitosis • The phases areprophase, prometaphase,metaphase,anaphase, andtelophase.

  5. Prophase • The chromosomes become condensed and key proteins begin to bind the kinetochores, preparing for spindle attachment.

  6. Prometaphase • The mitotic spindle is formed and the chromosomes attach to microtubules in the spindle via their kinetochores.

  7. Metaphase • All of the chromosomes are attached to microtubules via their kinetochores, and aligned at the metaphase plate.

  8. Anaphase • The sister chromatics separate and are moved toward the poles of the spindle. The chromosomal separation and movement toward the poles is called Anaphase A. The spindlepoles separate as well, which is anaphase B. Midzone complex formation also occurs in the anaphase.

  9. Telophase • The mother cell is physically divided into two daughter cells bycytokinesis.

  10. Mitosis occurs... • It occurs everywhere in your body, except sex cells.

  11. What is Meiosis? • the process by which the number of chromosomes in a cell that produces sex cells is reduced to one half

  12. Phases of Meiosis • Meiosis only occurs in the process of gametogenesis, it is when the sex cell is being formed.In fertilization, meiosis is needed to prevent the doubling of the chromosome number in each successive generation. The phases are interphase, prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II, and telophase II.

  13. Prophase I • Prophase is the phase in which the cell is not reproducing.

  14. Metaphase I • in metaphase 1 the nuclear membrane disappears and the chromosomes line up along the inside of the cell

  15. Anaphase I • Anaphase1 two chromosomes go to each side of the cell and the cell starts to split.

  16. Meiosis occurs.... Meiosis occurs in the ovary and testis

  17. Difference between the two processes of cell division • Yes, there is a difference between the two. There is more phases on meiosis than mitosis.

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