Review Questions - L10:Cellular Reproduction, Mitosis & Meiosis
Questions:
1. What are the two principles of cell theory?
2. Provide a brief definition of mitosis and meiosis that clearly distinguishes between the two
processes.
3. What is cytokinesis?
4. What is cell division and what purposes does it serve in an organism?
5. Where is DNA found in the cell?
6. How is DNA packed into the cell?
7. What is the difference between a genome and a gene?
8. What is chromatin composed of?
9. Provide a brief definition of sister chromatids and homologous chromosomes that clearly
distinguishes between the two terms.
10. What happens during the Interphase stage of the cell cycle?
11. What is the function of cohesin?
12. Draw a series of sketches that depicts each phase of mitosis for a cell which has 4 chromosomes (2
homologous pairs). Use one color to represent the chromosomes initially received from the father
and another to represent the chromosomes received from the mother. Clearly label each sketch with
the processes that occur in each phase.
13. What role do the centrosomes play in mitosis?
14. What is a kinetochore and where is it located?
15. How is cytokinesis different in plants and animals?
16. What is asexual reproduction?
17. Describe the process of binary fission.
18. Provide a brief definition of autosomes and sex chromosomes that clearly distinguishes between the
two terms.
19. Provide a brief definition of haploid and diploid that clearly distinguishes between the two terms.
20. What is a lifecycle?
21. Draw a series of sketches that depicts each phase of meiosis for a cell which has 4 chromosomes (2
homologous pairs). Use one color to represent the chromosomes initially received from the father
and another to represent the chromosomes received from the mother. Clearly label each sketch with
the processes that occur in each phase.
22. Make another drawing of the phases of mitosis, but leave some room on the page beside each phase.
Now draw the phases of meiosis I directly beside each mitosis phase .
23. Note the differences in the two processes you drew by using a highlighter or by circling the
differences with a colored pen. Now finish up the process by drawing meiosis 2.
24. What is a tetrad?
25. What is crossing over and when does it occur?
26. What is a recombinant chromosome?
27. What other forms of genetic variation are possible during the sexual lifecycle?
28. What are the benefits of asexual reproduction? What are the costs?
29. What are the benefits of sexual reproduction? What are the costs?
30. Under what circumstances might an organism that is capable of asexual reproduction be more
successful than an organism that can only reproduce sexually?
31. What is the cell cycle control system?
32. Describe the regulation that occurs at the G1 checkpoint.
33. Describe the regulation that occurs at the G2 checkpoint.
34. What are cyclin-dependent kinanses?
35. Describe the different types of regulation by factors coming from outside the cell.
36. What is the difference between a benign tumor and a malignant tumor?
37. What does Taxol do for cancer patients?