🔬 Key Cell Cycle Checkpoints and Regulatory Mechanisms
Learn about key cell cycle checkpoints — G₁, S, G₂, and M phases — and how cyclins, CDKs, and p53 regulate cell growth, division, and DNA integrity.
🧬 G1-S Phase Regulation: The Cell Cycle’s Master Checkpoint
Learn G1-S phase regulation for MCAT & NCLEX. Understand p53, p21, Cyclin D/CDK4, Rb, and E2F in cell cycle control and cancer biology.