MITOSIS: LIFE SCIENCES FOR GRADE 10`S

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MITOSIS: LIFE SCIENCES FOR GRADE 10`S

  1. 1. MITOSIS
  2. 2. MITOSIS: An Introduction  Mitosis eukaryotic two identical
  3. 3. REMEMBER! Interphase Prophase Metaphase Anaphase Telophase Cytokinesis IPMATC
  4. 4. Interphase: 46 Chromosomes
  5. 5. Prophase condenses same genetic information. opposite
  6. 6. PROPHASE
  7. 7. Metaphase nuclear membrane disappears Polar fibers extend randomly align angles equal forces polar fibers
  8. 8. Metaphase Animal Cell Plant Cell
  9. 9. Metaphase: Chromosomes align at middle of cell.
  10. 10. METAPHASE
  11. 11. Anaphase The sister chromatids now become separate daughter chromosomes, and are pulled apart by shortening kinetochores microtubules and move toward the respective centrosomes to which they are attached.
  12. 12. ANAPHASE
  13. 13. Anaphase: Separated chromosomes pulled apart.
  14. 14. Telophase In Telophase, the chromosomes are cordoned off into distinct new nuclei in the emerging daughter cells The polar fibers continue to lengthen. Nuclei (plural form of nucleus) begin to form at opposite poles. The nuclear envelopes of these nuclei are formed. Nucleoli also reappear. Chromatin fibers of chromosomes uncoil.
  15. 15. TELOPHASE
  16. 16. Telophase: Microtubules disappear, cell division begins.
  17. 17. Cytokinesis Cytokinesis division cytoplasm nuclear cell membrane tightened.
  18. 18. CYTOKINESIS
  19. 19. Cytokinesis •The division of the cytoplasm. •In animal cells, a Cleavage Furrow forms and separates Daughter Cells Cleavage furrow in a dividing f
  20. 20. Importance of mitosis Mitosis maintenance chromosomal 1.Regeneration 2.Vegetative Reproduction 3.Growth 4.Cell Replace ment
  21. 21. Errorsin mitosis broken lost incorrectly chromosomal inversion organism death
  22. 22. I hope this powerpoint helps you to understand MITOSIS better… The End
  23. 23. Reference list: • Babbileo. (2013). [Online], Available at: http://www.slideshare.net/babbileo/mitosis- 21017634?qid=b3beeb2f-8051-4032-9655- 55f08e494357&v=default&b=&from_search=8 (Accessed 06 March 2014) Charlie. (2013) . [Online], Available at: http://www.slideshare.net/charlietheteacher/mitosis-ppt-27467916?qid=c96528ae- 3a55-47e7-bb09-fa9c5e784b45&v=qf1&b=&from_search=18 Kalember, J. (2014). [Online], Available at: http://www.slideshare.net/MRKALEMBER/mitosis-30635784?qid=c96528ae-3a55-47e7- bb09-fa9c5e784b45&v=qf1&b=&from_search=6 (Accessed 06 March 2014) • Memon , N. (2012). [Online], Available at : http://www.slideshare.net/NailaMemon/presentation1-11659810 (Accessed 03 March 2014) • Dreyngerous . (2008). [Online], Available at: http://www.slideshare.net/dreyngerous/mitosis-539875

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