Evaluate the differences between proto oncogenes and oncogenes regarding their impact on cell division.

• A. Proto oncogenes induce apoptosis; oncogenes prevent apoptosis.
• B. Proto oncogenes inhibit cell division; oncogenes enhance DNA repair.
• C. Proto oncogenes activate tumor suppressor genes; oncogenes deactivate them.
• D. Proto oncogenes promote normal cell division; oncogenes lead to unrestrained cell division and cancer.

Answer: (D)