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DNA Replication and Repair


Problems

Problem : How does the 3' to 5' proof-reading exonuclease work?


Problem : Where does the exonuclease cut the daughter strand to remove an improperly paired base?


Problem : What are the three main sources of DNA damage?


Problem : Thymine dimer mutations are corrected by what DNA repair system?


Problem : In the mismatch repair system, how does the exonuclease distinguish which base is the correct one?


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