question_answer 51)

  In a nucleus, the number of rib nucleoside triphosphates is 10 times the number of deoxy x 10 ribonucleoside triphosphates, but only deoxyribonucleotides are added during the DNA replication. Suggest a mechanism.

Answer:

                  DNA polymerase enzyme is highly specific to recognize only deoxy ribonucleoside triphosphates. Therefore, it cannot hold RNAb-nucleotides.