This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
BRCA-1 gene is located at what location of the chromosome? 
Select and explain. 
A. 13p 12, B. 13q 12, C. 17p 21, D. 17q 21
D: 17q 21
Answer: D: 17q 21 
Explanation: BRCA-1 is located at - 17q 21
BRCA-2 located at - 13q 12