Question

Dna polymarse 1 has 5' 3' exonuclease activity, how does it prevent digesting itself

Answer 1

This process involves the exonuclease's catching up to the pol II and terminating the transcription. Pol I then synthesizes DNA nucleotides in place of the RNA primer it had just removed. DNA polymerase I also has 3' to 5' and 5' to 3' exonuclease activity, which is used in editing and proofreading DNA for errors.

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