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
BRCA1 gene is located on which chromosome? 
Select and explain. 
A. Chromosome 13, B. Chromosome 19, C. Chromosome 21, D. Chromosome 17
D: Chromosome 17
Answer: D: Chromosome 17 
Explanation: 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