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MITOSIS

MITOSIS. All cells contain chromosomes, which are strands of DNA. Chromatid. Telomere. Centromere. The Cell Cycle. During interphase, a cell prepares for mitosis. Interphase is made up of: G 1: During Gap 1, the cell g rows. S: During Synthesis, the cell makes a copy of its DNA

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MITOSIS

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  1. MITOSIS

  2. All cells contain chromosomes, which are strands of DNA Chromatid Telomere Centromere

  3. The Cell Cycle During interphase, a cell prepares for mitosis. Interphase is made up of: G1: During Gap 1, the cell grows. S: During Synthesis, the cell makes a copy of its DNA G2: During Gap 2, the cell grows some more.

  4. Mitosis – The cell divides into 2 There are 4 stages of mitosis: • Prophase • Metaphase • Anaphase • Telophase • …And then Cytokinesis • begins

  5. 1st Stage of mitosis: PROPHASE • Centrioles move to opposite sides of the cell • Spindle fibers form • Nuclear membrane begins to break down • Chromosomes condense Centrioles Nuclear membrane Spindle fibers

  6. Prophase Plant Cell Animal Cell Spindle fibers Centrioles Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

  7. 2nd Stage of mitosis: Metaphase Spindle fibers attach to chromosomes and line them up in the Middle of the cell

  8. Metaphase Plant Cell Animal Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

  9. 3rd Stage of mitosis: ANAPHASE • Chromatids(or pairs of chromosomes) are pulled Apart and move Away from each other

  10. Anaphase Plant Cell Animal Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

  11. 4th Stage of mitosis: TELOPHASE • Two new nuclei form. • Mitosis ends. Nuclei Nuclei

  12. Telophase Plant Cell Animal Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

  13. And finally, CYTOKINESIS!! (This is technically not part of mitosis, but happens after mitosis ends) • Cytoplasm splits

  14. Mitosis -- Review

  15. IPMAT REMEMBER! • Interphase • Prophase • Metaphase • Anaphase • Telophase IPee on the MAT

  16. Cell Cycle

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