Cells need time to repair dna: dna Damage induces Cell Cycle Checkpoints Daughter cells Extracellular DNA damage control signals signals cell cyo cle Intracellular check points quality control M(Mitosis) If the damage is too great to fix by (DNA synthesis) repair a signal is sent for the cell to igure by MIT OCW undergo suicide• DNA damage signals cell cycle check points • If the damage is too great to fix by repair a signal is sent for the cell to undergo suicide Cells need time to repair DNA: DNA Damage induces Cell Cycle Checkpoints Extracellular growth control signals Intracellular quality control checks (DNA synthesis) S Daughter cells M (Mitosis) G1 G0 G2 Figure by MIT OCW