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Sexual vs. Asexual Reproduction

Sexual vs. Asexual Reproduction. By: Brianna Shields October 19, 2004. DO NOW- Hwk on desk!. 1. Which cell part is green, found only in plants and is the site of photosynthesis? 2. Which cell part acts as the cleanup crew, recycling old cell parts?

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Sexual vs. Asexual Reproduction

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  1. Sexual vs. Asexual Reproduction By: Brianna Shields October 19, 2004

  2. DO NOW- Hwk on desk! • 1. Which cell part is green, found only in plants and is the site of photosynthesis? • 2. Which cell part acts as the cleanup crew, recycling old cell parts? • 3. Which cell part is found in both animal and plant cells and produces the energy for the cell?

  3. Homework • Please clear everything except your homework off of your desk • We will go over it together • It is your responsibility to make the corrections

  4. GOAL • To compare forms of sexual and asexual reproduction • To understand the process of mitosis

  5. Sexual Reproduction 1. 2 parents 2. Sex cells: sperm and egg 3. Sperm and egg join= fertilization 4. Offspring look different from parent (mixed DNA) Sexual Reproduction

  6. Sexual Reproduction 5. Examples Humans, some plants, mammals, fish, reptiles, etc. Sexual Reproduction

  7. Sexual Reproduction

  8. Asexual Reproduction 1. One parent 2. No sex cells 3. Offspring produced by cell division 4. Offspring identical to parent (same DNA) 5. Several types in plants and animals Asexual Reproduction

  9. Binary Fission 1. Organism divides in half 2. 2 identical daughter cells produced 3. Daughter cells are half the parent’s size 4. Daughter cells grow, then divide too 5. In bacteria Types of Asexual Reproduction

  10. Budding 1. Small bud grows out of parent cell 2. Two different sized cells made (with identical DNA) 3. Bud breaks off and grows 4. In yeast and hydra Types of Asexual Reproduction

  11. Regeneration 1. Repair/ grow lost body parts 2. Left over cells divide to make more cells 3. Lobsters, starfish, lizards Types of Asexual Reproduction

  12. What type of reproduction is this??? Explain…

  13. What type of reproduction is this??? Explain…

  14. What type of reproduction is this??? Explain…

  15. What type of reproduction is this??? Explain…

  16. What type of reproduction is this??? Explain…

  17. What type of reproduction is this??? Explain…

  18. What type of reproduction is this??? Explain…

  19. What type of reproduction is this??? Explain…

  20. What type of reproduction is this??? Explain…

  21. What type of reproduction is this??? Explain…

  22. What type of reproduction is this??? Explain…

  23. What type of reproduction is this??? Explain…

  24. What type of reproduction is this??? Explain…

  25. Asexual vs. Sexual

  26. Mitosis 1. Cell division 2. Causes multicellular organisms to grow (even in humans) 3. Cells are identical to parent cells (same DNA) Mitosis

  27. Phase 1- Interphase Chromosomes copied Cell resting Threadlike chromatin (DNA ball) Mitosis

  28. Phase 2- Prophase Mitosis begins Chromosomes are rodlike pairs Centrioles move to poles Spindle fibers connect centrioles Mitosis

  29. Phase 3- Metaphase Chromosomes attach to spindle fibers They line up in middle of cell Mitosis

  30. Phase 4- Anaphase Sister chromatids pull apart One sister of each pair goes to opposite ends of the cell Mitosis

  31. Phase 5- Telophase 2 new nuclei form Chromosomes are in a ball again (chromatin) Mitosis

  32. Phase 6- Cytokinesis Cytoplasm pinches in to form 2 new identical daughter cells Mitosis

  33. Which phase of mitosis is this? Explain….. Anaphase

  34. Which phase of mitosis is this? Explain….. Cytokinesis

  35. Which phase of mitosis is this? Explain….. Interphase

  36. Which phase of mitosis is this? Explain….. Metaphase

  37. Which phase of mitosis is this? Explain….. Prophase

  38. Which phase of mitosis is this? Explain….. Prophase

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