1. (4) DNA wraps around proteins called _________ in order for it to become compact so it can fit within a cell.

2. (1) After replication, each chromosome consists of two ________ ________ attached by a centromere.

3. (10) How does the chromosome number of each daughter cell compare to the parent cell after mitosis?

4. (18) Name the Phase!

5. (6) A human cell has 46 chromosomes in 23 pairs. The 44 chromosomes that do not determine sex are called ___________.

6. (17) Tetrads consisting of homologs line up at the equator of the cell. Name the phase!

7. (12) The spindle apparatus appears during mitosis. Name the phase!

8. (7) The nuclear envelope breaks down during mitosis. Name the phase!

9. (13) What are three features of homologous chromosomes?

10. (11) Cytokinesis in animal cells involves what pinching of the cell membrane?

11. (5) One of the most important reasons for sexual reproduction is to increase genetic ___________.

12. (20) Name the Phase!

13. (15) Draw the nuclei of the daughter cells if cytokinesis took place before mitosis.

14. (21) Draw the chromosomes in the nuclei of the daughter cells of a 2n=6 organism that would result if a cell did not replicate DNA before mitosis.

15. (23) What is the relationship between daughter cells produced by asexual reproduction?

16. (3) Name the Phase!

17. (16) Division of cytoplasm in a plant cell involves what formation that becomes a new piece of cell wall?

18. (8) Spermatogenesis and Oogenesis both produce 4 haploid cells. Other than what the gametes are called, what is the difference between the end products of the two processes?

19. (9) Name the Phase!

20. (24) Name the Phase!

21. (22) The centromere breaks down and sister chromatids separate during mitosis. Name the phase!

22. (2) The nucleolus reappears during mitosis. Name the phase!

23. (14) The cell that results when a sperm fertilizes an egg is called a _________.

24. (19) Name the Phase!