Mitosis from FTCC
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  • 1. Asexual Reproduction Mitosis Mitosis is the process in which the nucleus divides to form two new nuclei. How does mitosis differ in plants and animals? 1 1
  • 2. How do little elephants grow up to be BIG elephants?
  • 3. The process of asexual reproduction begins after a sperm fertilizes an egg.
  • 4. Skin cancer - the abnormal growth of skin cells - most often develops on skin exposed to the sun. Cell that reproduce by asexual reproduction reproduce constantly.
  • 5. Animated Mitosis Cycle http://www.cellsalive.com/mitosis.htm • Interphase • Prophase • Metaphase • Anaphase • Telophase & Cytokinesis
  • 6. • Chromosomes are copied (# doubles) • Chromosomes appear as threadlike coils (chromatin) at the start, but each chromosome and its copy(sister chromosome) change to sister chromatids at end of this phase CELL Nucleus MEMBRANE Cytoplasm
  • 7. Unreplicated vs. replicated chromosome During which part of the Cell Cycle does replication of DNA occur . . . Interphase, or Cell Division (Mitosis or Meiosis)?
  • 8. Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
  • 9. • Mitosis begins (cell begins to divide) • Centrioles (or poles) appear and begin to move to opposite end of the cell. • Spindle fibers form between the poles. Centrioles Sister chromatids Spindle fibers
  • 10. Animal Cell Plant Cell Spindle fibers Centrioles Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
  • 11. • Chromatids (or pairs of chromosomes) attach to the spindle fibers. Centrioles Spindle fibers
  • 12. Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
  • 13. • Chromatids (or pairs of chromosomes) separate and begin to move to opposite ends of the cell. Centrioles Spindle fibers
  • 14. Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
  • 15. • Two new nuclei form. • Chromosomes appear as chromatin (threads rather than rods). • Mitosis ends. Nuclei Nuclei Chromatin
  • 16. Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm
  • 17. • Cell membrane moves inward to create two identical daughter cells – each with its own nucleus with identical chromosomes. • Daughter cells are IDENTICAL to the original parent cell.
  • 18. Animal Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase Interphase
  • 19. Plant Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase Interphase
  • 20. 23
  • 21. http://www.cellsalive.com/mitosis.htm