Consider the following figure which shows a section of double
stranded DNA, containing a base mis-match (at the underlined
bases).

Which strand contains the correct sequence of bases (top or
bottom?) and how do you know?

What type of DNA repair would be used to repair this type of DNA
damage?

Describe, step by step, how this type of DNA repair is carried
out. In your answer include details of enzymes involved in each
step.