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
[{'content': 'HLA is located on- \nSelect and explain. \nA. Sho arm of chr-6, B. Long arm of chr-6, C. Sho arm of chr-3, D. Long arm of chr-3', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Harshmohan textbook of pathology 7th edition HLA gene located on sho arm of chromosome no 6. These genes occupy 4 regions ABCD and exhibit marked variation in allelic gene at each locus .therefore the product of HLA antigen is highly polymorphic. .', 'role': 'assistant'}]