Problem
A. Explain in detail how yeast is used as a model organism to elucidate the cell cycle.
B. Describe how cyclin-dependent kinases (CDKs) control cell cycle progression, and how they are themselves regulated.
C. Explain how mutations affecting both growth-promoting and growth-inhibiting processes can result in cancerous cell proliferation. Give specific examples.
D. Discuss in details the differences between cancer and normal cells.