This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Inonizing radiation affects which stage of cell cycle \nSelect and explain. \nA. G2S, B. G1G2, C. G2M, D. G0G1', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ref Robbins 8/e p 286, Harrison 17/e p516; 9/e p289 The G2/M checkpoint ministers the completion of the DNA replication and checks whether the cell can safely intiates the mitosis and separate sister chromatids,this checkpoint is paicularly impoant in cells exposed to inonizing radiation , cells damaged by inonizing radiation activates G2M Check point and. Arrest in G2', 'role': 'assistant'}]