5. Molecular Genetics

Dna Repair — Quiz

Test your understanding of dna repair with 5 practice questions.

Practice Questions

Question 1

In base excision repair, which enzyme cleaves the phosphodiester backbone at an abasic (AP) site?

Question 2

Which protein complex recognizes helix-distorting lesions in global genome nucleotide excision repair in eukaryotes?

Question 3

Inherited mutations in the MLH1 gene lead to Lynch syndrome. Defects in which DNA repair pathway cause this condition?

Question 4

Which enzyme uses light energy to directly reverse UV-induced cyclobutane pyrimidine dimers in DNA?

Question 5

Which protein complex initiates end resection at a double-strand break to promote homologous recombination repair?