Final answer:
DNA polymerase can proofread and correct errors if a mismatch between DNA bases is found during replication.
Step-by-step explanation:
During DNA replication, if a mismatch between DNA bases is found by the DNA polymerase, it has the ability to proofread and correct the error. The DNA polymerase checks whether the newly added base has paired correctly with the base in the template strand. If an incorrect base has been added, the DNA polymerase removes the wrong nucleotide and replaces it with the correct one, ensuring the accuracy of the DNA sequence.