1. Aim: What are the major changes in the nucleus during cell division? Part 3 of Sheena’s story Fill in Class Notes on Mitosis During presentation

2. Mitosis in a single celled organism This type of reproduction involves no exchange of genetic material, and is a type of asexual reproduction. This form of asexual reproduction is often called 'fission'

3. Mitosis in multi-cellular organisms occurs for GrowthRepair

4. Asexual Reproduction Budding Although capable of sexual reproduction, hydras reproduce most of the year by producing external asexual buds that eventually pinch off at the base and become new individuals. Budding Hydra

5. Asexual Reproduction in Plants Underground stems rhizomes bulbs corms and tubers

6. Asexual Reproduction in Plants Bulbs and Tubers

7. Mitosis also occurs during early embryonic development Fertilized egg Fetus

8. Cell division involves the process of Mitosis Step 1 (S phase of Cell Cycle) Chromosomes Duplicate Chromosomes make more of themselves

9. Cell Division Step 3 Metaphase Chromosomes line up in the middle of the cell

10. Cell Division Step 4 Anaphase Double stranded chromosomes pull away from each other Animal Cell Plant Cell

11. Step 5 of Cell Division is Cytokinesis Animal CellPlant Cell

12. Cancer develops due to the loss of growth control in cells during cell division. Stages of tumor development A B Hyperplasia C Dysplasia D in situ cancer malignant