1. Sexual vs. Asexual Reproduction
Credits to:
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 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)

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

7. Sexual Reproduction

8. Asexual Reproduction 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

9. Types of Asexual Reproduction
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

10. Types of Asexual Reproduction
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

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

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

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

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25. Asexual vs. Sexual

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

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

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

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

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

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

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

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