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Asexual Reproduction

This comprehensive guide explores asexual and sexual reproduction, detailing processes such as fission, budding, and fragmentation. It covers the intricacies of the cell cycle, including interphase and mitotic phases such as prophase, metaphase, anaphase, telophase, and cytokinesis. The impact of internal and external signals on cell division and cancer development, alongside the mechanisms of meiosis and its significance in genetic variation, are also discussed. Gain insight into the fascinating world of reproductive biology and the foundational principles governing life cycles.

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Asexual Reproduction

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Presentation Transcript

  1. Asexual Reproduction

  2. Asexual Reproduction • Fission • Budding • Fragmentation & Regeneration

  3. Binary Fission

  4. Chromatin

  5. Chromosomes

  6. Cell Cycle

  7. Interphase • G1 = Growth • S = DNA Replication • G2 = Growth • Centrioles with asters

  8. Prophase • Chromatin to chromosomes • Nucleus and Nucleolus disappear • Chromosomes • Two chromatids with centromere • Kinetochore • Spindle apparatus

  9. Metaphase • Centrosomes at opposite poles • Chromosomes line up on metaphase plate

  10. Anaphase • Chromosomes pulled apart – become daughter chromosomes

  11. Telophase and Cytokinesis • Reverse of Prophase • Cytokinesis • Animal cells • Cleavage Furrow • Plant cells • Cell Plate

  12. Mitosis Control

  13. Messages • Internal Signals • Kinetochores • External Signals • Growth Factor • Density-dependent inhibition • (contact inhibition) • Anchorage dependence

  14. Cancer • Transformation • Tumor • Benign • Malignant • Metastasis

  15. Sexual Reproduction

  16. Sexual Reproduction

  17. Fission

  18. Budding

  19. Parthenogenesis

  20. Hermaphrodites

  21. Sequential Hermaphrodites

  22. Human Life Cycle

  23. Meiosis Overview

  24. Meiosis

  25. Meiosis

  26. Mitosis vs. Meiosis

  27. Crossing Over

  28. Independent Assortment

  29. Sexual Sources of Variation • Crossing Over • Independent Assortment • Random Fertilization • Mutations

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