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<tr><th colspan=6><strong>DNA proofreading.</strong></th></tr>
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<td valign="top" width="34%">During DNA replication an <b>incorrect</b> base pair may be formed.
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<td valign="top" width="34%">The replication complex <b>excises</b> the incorrect base.
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<td valign="top" width="33%"><b>DNA polymerase</b> adds the correct base.
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