This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'BRCA-1 gene lies on Chromosome- \nSelect and explain. \nA. 17, B. 18, C. 20, D. 21', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Harshmohan textbook of pathology 7th edition. BRCA1 gene located on chromosome no 17 , a DNA repair gene is implicated in both breast and ovarian cancer in inherited cases. .', 'role': 'assistant'}]