AP Biology Cell Division Review Study Guide 10-16-12 http://www.phschool.com/science/biology_place/labbench/lab3/intro.html *Use the above website to answer the following questions regarding the cell cycle and mitosis…… 1. What is mitosis? 2. What is the result of mitosis? 3. What happens right after mitosis? 4. Explain what is meant by the cell cycle. 5. What happen in the G1 phase? 6. What happens in the S phase? 7. What happens in the G2 phase? 8. What happens in the M phase? 9. What does interphase consist of? 10. What are the 4 phases of mitosis? 11. What happens directly after mitosis? **Put the following diagrams in your notes we will use them soon…… http://www.cellsalive.com/cell_cycle.htm (use this site for more diagrams and info) 12. Make a diagram of a cell that is ready to begin mitosis. 13. Describe how the chromosomes look in prophase with a diagram of the nucleus. 14. What does each duplicated chromosome look like? 15. What does the mitotic spindle consist of and what is its job? 16. What signals the beginning of prometaphase? 17. Describe how the nucleus looks at the beginning of metaphase with a diagram. 18. When does anaphase begin? 19. Describe how the nucleus looks at the beginning of anaphase with a diagram. 20. When does anaphase end? 21. Where are the chromosomes at the beginning of telophase? 22. What do the chromosomes look like during telophase? 23. What happens to the nucleus at this point? 24. Explain what cytokinesis is. Click on the meiosis button 1. 2. 3. 4. 5. 6. 7. 8. 9. How many divisions does the process of meiosis involve? What cells result from meiosis? How is variation accomplished in meiosis? Does meiosis occur in diploid or haploid cells? Explain What are the 2 possible results from the process of meiosis? (animals and fungi) How are plants and algae different from human in terms of meiosis? What is a gametophyte? How are they produced? Explain the difference between Meiosis I and Meiosis II Explain how the centrosomes are produced for Meiosis I. 10. What are their functions? 11. Do plant cells have centrosomes? Explain **Click on the phases of mitosis on the left side of your screen to get to the next few slides………….otherwise it will knock you out of this site 12. What happens to the duplicated chromosomes during prophase I? 13. What is crossing over? 14. What does bivalent mean? 15. What makes up a tetrad? 16. What is a chiasmata? 17. When does anaphase I begin? 18. Do the sister chromatids remain attached during anaphase I? How is this different than in anaphase II? 19. What happens to the tetrads in telophase I? 20. Does replication happen again prior to prophase II? Explain 21. What is the result of meiosis II? How many cells and how many chromosomes in each cell? 22. Explain how there are 8 million possible chromosome pairings in a haploid nuclei. 23. Explain how crossing over actually occurs. 24. Explain how the results of crossing over can be genetic recombinants. ** make sure to do the self quiz until you understand