This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Surgery
BRCA 1 gene is located on 
Select and explain. 
A. 11q, B. 13q, C. 17q, D. 19q
C: 17q
Answer: C: 17q 
Explanation: BRCA1 (on chromosome 17q21) and BRCA2 (on chromosome 13q12.3) are both large genes, and hundreds of different mutations distributed throughout their coding regions have been associated with familial breast cancers.Ref: Robbins; 9th edition; Chapter 23; The Breast; Page no: 1054