Question

The low error rate in DNA synthesis is due to (select one) 

a. low processivity of DNA polymerase 

b. the action of the primate 

c. the specificity of complementary interactions 

d. high processivity of DNA polymerase 

e. 3'-5'-exonuclease activity of DNA polymerase 

Answer 1

e. 3'-5'-exonuclease activity of DNA polymerase .

DNA polymerase enzyme removes incorrectly added nucleotide by it's 3' to 5' exonuclease activity that is also called as proofreading activity of the enzyme.