21. Which of the following is the normal cell cycle, primarily regulated at checkpoints?
A. Metaphase in mitosis
B. Anaphase, G1 boundary
C. G1-S boundary
D. S-G2 boundary
22. The phase of mitosis which is associated with the formation of the nuclear envelope is
23. At the __________ checkpoint, cell growth is controlled.
24. A nuclear envelope forms around each set of sister chromatids in
25. In which of the following phase preparations for genome separation are made?