The main function of DNA polymerase is to add new nucleotides to the 3'-end of a growing chain. What is the second role of this enzyme in DNA replication?
A)synthesis of RNA primer
B)unwinding of the DNA duplex
C)proofreading
D)stabilizing strands of DNA at replication fork
E)joining Okazaki fragments

Question

Quizplus · Accepted Answer

The second role of DNA polymerase in DNA replication is proofreading. After adding a new nucleotide, DNA polymerase checks if it is correctly paired with the template nucleotide. If it detects a mispairing, it removes the incorrect nucleotide and replaces it with the correct one before continuing with nucleotide addition. This process ensures accuracy and fidelity of DNA replication.

The Main Function of DNA Polymerase Is to Add New