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
Retinoblastoma gene is located on chromosome - 
Select and explain. 
A. 6, B. 9, C. 13, D. 21
C: 13
Answer: C: 13 
Explanation: Harshmohan textbook of pathology 7th edition RB gene is located on long arm chromosome 13. This is the first ever tumor suppressor gene identified and this has been amply studied..