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Asexual Reproduction

Asexual Reproduction. Cup o ’ Joe. Define ‘reproduction’ and ‘asexual’ in your own words. Reproduction. Creating new organisms from existing organisms. Asexual. Reproduction needing only 1 parent Prefix ‘a’ = without. Budding. Growth of cells on adult organism

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Asexual Reproduction

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  1. Asexual Reproduction

  2. Cup o’ Joe • Define ‘reproduction’ and ‘asexual’ in your own words.

  3. Reproduction • Creating new organisms from existing organisms

  4. Asexual • Reproduction needing only 1 parent • Prefix ‘a’ = without

  5. Budding • Growth of cells on adult organism • Offspring break loose when fully developed • Hydra

  6. Budding Hydra

  7. Fragmentation • Mature adult breaks into 2 or more fragments • Fragments produce new organism • Flatworms

  8. Flatworm

  9. Parthenogenesis • Eggs can develop with no fertilization!! • Honeybees – unfertilized eggs become male drones; fertilized eggs become female workers & queens

  10. Gemmules • Internal buds eventually expelled by adult • Produced in harsh conditions, resume growing in favorable contitions • Sponges

  11. Regeneration • Damaged tissue will not only heal but replace body part • Newt’s injured limb will re-grow • Starfish’s broken arm will create 2 new organisms

  12. Binary Fission • Produces 2 identical cells from original parent • Prokaryotic cells • Mitosis in Eukaryotes

  13. Homework: Write one paragraph explaining why reproduction is important for preserving life. Use the relationship between reproduction and the status of endangered species in your reasoning.

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