This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cytogenetic Disorders, Subject name: Pathology
[{'content': 'BRCA 1 gene is located on which chromosome? \nSelect and explain. \nA. Chromosome 13, B. Chromosome 17, C. Chromosome 19, D. Chromosome 21', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Chromosome 17Ref: Robbiris pathology 9th ed. 1291* The BRCA2 gene is located on chromosome 13 and encodes over 3000 amino acids. It appears that BRCA2 plays an important role in male breast cancer.* The human BRCA1 gene is located on the long (q) arm of chromosome 17', 'role': 'assistant'}]