Final answer:
DNA polymerase has 3 prime to 5 prime exonuclease activity, also called proofreading activity, which allows the enzyme to correct mistakes during DNA replication by removing incorrect nucleotides.
Step-by-step explanation:
DNA polymerase has 3 prime to 5 prime exonuclease activity, which is also called the proofreading activity. This activity allows the enzyme to remove nucleotides from the 3' end of a growing DNA strand in order to correct any mistakes that may have occurred during replication. By removing the incorrect nucleotide, DNA polymerase can replace it with the correct one, ensuring the accuracy of the newly synthesized DNA.