Deoxy ribonucleic acid is formed from:: (A) Ribonuclease, (B) Ribonucleotide monophosphate, (C) Ribonucleotide diphosphate, (D) Ribonucleotide triphosphate
Answer is C. Ans. C. Ribonucleotide diphosphate(Ref: Harper 31/e page 312)Reduction of the 2'-hydroxyl of purine and pyrimidine ribonucleotides, catalyzed by the ribonucleotide reductase complex, provides the deoxyribonucleoside diphosphates (dNDPs) needed for both the synthesis and repair of DNA