1. How do little elephants grow up to be BIG elephants?

2. How are animals (including humans) able to shed skin cells?

3. The process of asexual reproduction begins after a sperm fertilizes an egg. This process is called mitosis.

4. Mitosis

5. Skin cancer - the abnormal growth of skin cells - most often develops on skin exposed to the sun. Cell that reproduce by asexual reproduction reproduce constantly.

6. Cell division occurs in a series of stages, or phases. These stages blend together and progress smoothly from one phase to the next.

7. Mitosis Cycle Interphase Prophase Metaphase Anaphase Telophase Cytokinesis

8. Chromatin Uncoiled DNA

9. Chromosomes are copied (# doubles) Chromosomes appear as threadlike coils (chromatin) at the start, but each chromosome and its copy(sister chromosome) change to sister chromatids at end of this phase CELL MEMBRANE Nucleus Cytoplasm

10. Chromosomes Rod shaped structure of tightly coiled DNA Made up of two chromatids joined at the centromere

11. Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

12. Mitosis begins (cell begins to divide) Centrioles (or poles) appear and begin to move to opposite end of the cell. Spindle fibers form between the poles. Centrioles Sister chromatids Spindle fibers

13. Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm Spindle fibers Centrioles

14. Chromatids (or pairs of chromosomes) attach to the spindle fibers. Centrioles Spindle fibers

15. Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

16. Chromatids (or pairs of chromosomes) separate and begin to move to opposite ends of the cell. Centrioles Spindle fibers

17. Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

18. Two new nuclei form. Chromosomes appear as chromatin (threads rather than rods). Mitosis ends. Nuclei Chromatin

19. Animal Cell Plant Cell Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

20. Cell membrane moves inward to create two daughter cells – each with its own nucleus with identical chromosomes.

21. Animal Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase Interphase

22. Plant Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase Interphase

23. I Interphase P Prophase M Metaphase A Anaphase T Telophase C Cytokinesis IPMATC I Pick More Apples Than Candy

24. 24

25. Cell Cycle Timing