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': "During which phase' of cell cycle the cellular Content of DNA is doubled \nSelect and explain. \nA. Mitotic phase, B. G1phase, C. G2 phase, D. Sphase", 'role': 'user'}, {'content': "Answer: D \nExplanation: Ref Robbins 8/e p86; 7/e p90; 9/e p25 Double the DNA The S-phase poion of interphase is when the DNA content of a cell increases. Ordinarily, a cell has one set of chromosomes, which are threadlike structures that contain the cell's DNA. During the G1 phase, each chromosome contains one molecule of DNA.", 'role': 'assistant'}]