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Understanding the Process of Mitosis: Stages and Importance

Explore the intricate process of mitosis, where a single cell divides into two identical cells. This guide covers the five key stages: Interphase, Prophase, Metaphase, Anaphase, and Telophase. During Interphase, DNA is replicated, and during Prophase, chromatin condenses into chromosomes. Metaphase sees chromosomes align at the cell's center, followed by Anaphase, where sister chromatids separate and move to opposite poles. Finally, Telophase reverses Prophase, leading to cytokinesis, and resulting in two new cells. Understanding mitosis is essential for recognizing normal growth and the implications of uncontrolled cell division, like cancer.

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Understanding the Process of Mitosis: Stages and Importance

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  1. The Process of Mitosis By Russell Clarida

  2. Interphase #1 • DNA is spread out as Chromatin • Nuclear membrane is visible • Nucleolus is visible • DNA is copied during “S” portion of Interphase Nuclear Membrane Chromation Nucleolus

  3. Interphase • DNA is spread out as Chromatin • Nuclear membrane is visible • Nucleolus is visible • DNA is copied during “S” portion of Interphase

  4. Prophase (dividing) #1 • Chromatin scrunches into Chromosomes • Nuclear membrane/nucleolus disappear • Spindle fibers appear • Centrioles appear next to nucleus toward poles Centrioles Chromosomes Spindle Fibers

  5. Prophase (dividing) • Chromatin scrunches into Chromosomes • Nuclear membrane/nucleolus disappear • Spindle fibers appear • Centrioles appear next to nucleus toward poles

  6. Prophase (dividing) • Chromatin scrunches into Chromosomes • Nuclear membrane/nucleolus disappear • Spindle fibers appear • Centrioles appear next to nucleus toward poles

  7. Prophase (dividing) • Chromatin scrunches into Chromosomes • Nuclear membrane/nucleolus disappear • Spindle fibers appear • Centrioles appear next to nucleus toward poles

  8. Metaphase (middle) #1 • Chromosomes line up in middle of cell

  9. Metaphase (middle) • Chromosomes line up in middle of cell

  10. Metaphase (middle) • Chromosomes line up in middle of cell

  11. Metaphase (middle) • Chromosomes line up in middle of cell

  12. Anaphase (apart) #1 • Chromatid arms separate and move to opposite ends of cell Chromatid arms

  13. Anaphase (apart) • Chromatid arms separate and move to opposite ends of cell

  14. Anaphase (apart) • Chromatid arms separate and move to opposite ends of cell

  15. Anaphase (apart) • Chromatid arms separate and move to opposite ends of cell

  16. Anaphase (apart) • Chromatid arms separate and move to opposite ends of cell

  17. Anaphase (apart) • Chromatid arms separate and move to opposite ends of cell

  18. Telophase #1 • “Reverse prophase” with two nuclei • Chromosomes spread out as Chromatin • Nuclear membrane/nucleolus return • Spindle fibers disappear, Centrioles disappear

  19. Cytokinesis • Breaks into two cells

  20. Importance • This process is something that every cell in every animal goes through to reproduce. This allows us to grow and build our bodies. However, this growth can be bad if uncontrolled, like Leukemia and lymphoma.

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