For 10 points, name this process in which the nucleotide sequence is corrected.
In one class of this process, the RecA protein binds to gaps and causes the destruction of the LexA protein.  Following this process, the Uvr and SfiA proteins are transcribed, and a possible next step is the creation of DinB and UmuCD proteins, which may cause this process to become counterproductive. The Mut protein family carries out another type of this process, which when not carried out properly, leads to the aforementioned SOS response. Lynch syndrome occurs if proteins in this process are mutated. This process removes (*) thymine dimers, and the base excision branch removes deaminated bases such as xanthine.  Failure of this process leads p53 to trigger apoptosis.  DNA Polymerase I carries out this process during proofreading, correcting such steps as innapropriately adding Uracil.  For 10 points, name this process in which the nucleotide sequence is corrected.
In one class of this process, the RecA protein binds to gaps and causes the destruction of the LexA protein.  
DNA Repair [accept logical equivalents like Fixing DNA Errors, accept "Nucleotide Excision Repair" before "Mut protein" and prompt until "Base excision" is mentioned, prompt on "Base Excision Repair" until "Base excision" is mentioned]