16. Microbial Genetics

DNA polymerase proofreading works by removing a mismatched base in the _______ direction, then replaces it with the correct base synthesized in the ________ direction.

Why is methylation important for the mismatch repair mechanism of DNA?

What kind of DNA damage is repaired using the mismatch repair mechanism?

What is the function of DNA glycosylase during base excision repair?

Which of the following statements about nucleotide excision repair and base excision repair is true?

_________ is the enzyme involved in repairing thymine dimers during photoreactivation.

Photoreactivation is able to remove what type of mutation?

SOS repair is mediated by a ______________ DNA polymerase:

When the DNA is extensively damaged the cell needs to repair the DNA with the SOS repair mechanism. What is the negative side effect of the cell using SOS repair?

Which of the following helps to prevent mutations? Select all that apply.

a. Conjugation

b. Transposons

c. Transduction

d. DNA proofreading

e. Specialized transduction

f. Excision repair