<prompt> HLA is located on-Sho arm of chr-6Long arm of chr-6Sho arm of chr-3Long arm of chr-3  <response>: 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. . 