ANSWERS: 1
  • The enzyme that proofreads and replicates DNA and replaces them and such is the enzyme polymerase. To be more exact the specific type of polymerase that "proofreads, detects, and corrects" is the bacteriophage phi 29 DNA polymerase. However, sometimes even this "backup system" misses these mutations but it is only about one in every billion pairs of completed DNA that is uncorrected or still mutated after replication.

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