Genetics 2 Views 1 Answers
What enzyme fixes errors in coding DNA replication?
What enzyme fixes errors in coding DNA replication?
Answered
The enzyme DNA polymerase plays a key role in fixing errors during DNA replication. DNA polymerase has proofreading activity, meaning that it can detect and correct mistakes as it synthesizes the new strand. If an incorrect nucleotide is added to the growing DNA strand, DNA polymerase can identify the error through its 3′ to 5′ exonuclease activity. This allows the enzyme to remove the incorrectly paired nucleotide and replace it with the correct one, ensuring that the DNA replication process is highly accurate. In addition to DNA polymerase, other repair mechanisms, such as mismatch repair proteins, also help detect and repair errors after replication is completed.
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