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Understanding the Cell Cycle: A Detailed Overview

Learn about the stages of the cell cycle from interphase to mitosis and cytokinesis. Understand the processes like DNA replication, chromosome alignment, and cell division.

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Understanding the Cell Cycle: A Detailed Overview

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  1. The cell cycle

  2. The Cell Cycle

  3. Interphase – Three phases • G1 – Growth & ordinary cell processes • S – DNA is copied (replication) • G2 – Organelles are copied

  4. Mitosis: First phase - prophase • DNA supercoils

  5. Prophase (continued) • Nuclear membrane breaks down • Spindle fibers form, attaching centrosomes to centrioles

  6. Mitosis: second phase - metaphase • Chromosomes line up in the middle

  7. Mitosis: third phase - anaphase • Chromatids pull apart

  8. Mitosis: fourth phase - telophase • Opposite of prophase: • DNA uncoils • Spindle fibers break down • Nuclear membrane forms again

  9. Cytokinesis • Division of cell membrane • Starts before end of telophase • In animal cells: cleavage furrow • In plants: cell plate

  10. The cell cycle

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