The feulgen reaction is used to test: (A) mRNA, (B) tRNA, (C) DNA, (D) rRNA
Answer is C. *Feulgen stain is a staining technique to detect DNA *In this procedure, the specimen is exposed to warm HCL which causes hydrolysis of DNA to produce aldehyde. Then Schiff reagent is added which reacts with aldehyde to impa red colour.