A: Prophase
B: Metaphase
C: Anaphase
D: Telophase
E: Interphase
1: Spindle fibers
2: Chromosomes (aligned at equator)
3: Separating chromatids (moving to poles)
4: Cleavage furrow / daughter cells forming
5: Nucleolus
6: Nuclear envelope breaking down
7: Chromatin condensing into chromosomes
8: Centrosomes / spindle poles
9: Spindle fibers attached to centromeres
10: Chromosomes (condensed, visible)
11. Spindle fibers
12. Centrosomes (or centrioles in animal cells)
13. Prophase, Metaphase, Anaphase, Telophase
14. Two
15. Telophase
16. 46
17. Two; 72
18. Prophase
19. 4 (based on the diagram showing 4 distinct chromosomes during prophase)
20. Centromere
Parent Tip: Review the logic above to help your child master the concept of the cell cycle worksheet answer key.