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': 'Barr body is found in the following phase of the cell cycle \nSelect and explain. \nA. Interphase, B. Metaphase, C. GI phase, D. Telophase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Inactivated X chromosomes seen in female somatic cells are called Barr-bodies which are present adjacent to the nuclear membrane. In humans with more than one X chromosome, the number of Barr bodies visible at interphase is always one fewer than the total number of X chromosomes.', 'role': 'assistant'}]