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Cell Reproduction

Cell Reproduction

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Cell Reproduction

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Presentation Transcript

  1. Cell Reproduction Mitosis and Binary Fission

  2. Three Schemes

  3. Major Events in Mitosis

  4. Vocabulary • Mitosis = division of the cell nucleus and its contents • Cytokinesis = the division of cell cytoplasm into two identical daughter cells • Chromatin = the combination of DNA and histone proteins • Diploid = Two copies of each chromosome, one paternal, one maternal

  5. Chromosomesin the Larger Scheme

  6. Chromosome Structure • 1 – Chromatid • 2 – Centromere • 3 – Short arm • 4 – Long arm

  7. Telomeres • Do not code for genes • Keep ends of chromosomes from sticking to each other • Prevent loss of genes

  8. The Cell Cycle

  9. Prophase

  10. Metaphase

  11. Anaphase

  12. Telophase

  13. Cytokinesis

  14. Mitosis in Onion Root Tip

  15. Binary Fission • The primary method of reproduction for prokaryotes • Does not require a mate • Is asexual reproduction • Does not increase the variation in a population

  16. Binary Fission Central growth Apical growth