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Mitosis: Cell Division

Mitosis: Cell Division. Cell Division - process by which a cell splits into two identical daughter cells Occurs in two main phase: . Interphase – cell copies DNA and prepares for division Mitosis – chromosomes separate into two new cells. What are chromosomes?.

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Mitosis: Cell Division

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  1. Mitosis: Cell Division

  2. Cell Division - process by which a cell splits into two identical daughter cells Occurs in two main phase:  Interphase – cell copies DNA and prepares for division Mitosis – chromosomes separate into two new cells

  3. What are chromosomes? • DNA containing cell’s genetic code • Each chromosome has a matching pair (homologous) • During interphase, each chromosome copies itself

  4. Life Cycle of the Cell • Mitosis = nuclear division • Mitosis is followed by cytokinesis (cell division) • The steps of mitosis ensure that each new cell has the exact same number of chromosomes as the original • Interphase = growth phase, differentiation occurs

  5. The Cell Cycle Interphase  (longest phase) G1 - first growth (gap) phase Synthesis - DNA makes a copy G2 - second growth (gap) phase, preparing for mitosis Mitosis - nucleus divides, ensuring each new cell has the exact number of chromosomes as parent

  6. Interphase • Prophase • Metaphase • Anaphase • Telophase • IPMAT

  7. 1. chromosomes visible (chromatids) 2. centrioles migrate to the poles 3. nuclear membrane disappears 4. nucleolus disappears 5. spindle forms

  8. 1. chromosomes line up on the equator, spindle attaches

  9. 1. chromatids separate and move to opposite poles

  10. 1. chromosomes disappear • chromatin 2. nuclear membrane reforms 3. nucleoli reappears 4. spindle disappears 5. centrioles duplicate

  11. - division of the cytoplasm to form 2 new daughter cells - organelles are divided - daughter cells are genetically identical Cells return to interphase

  12. Name the phases starting at the top.

  13. Name the phase • Identify X • Identify Y

  14. 5. Name the phase

  15. 6. Name the phase

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