Which enzyme polymerizes Okazaki fragments?: (A) DNA polymerase I, (B) DNA polymerase II, (C) DNA polymerase III, (D) RNA polymerase
Answer is C. DNA polymerase III holoenzyme is the enzyme primarily responsible for replicative DNA synthesis in E. coli. It carries out primer-initiated 5' to 3' polymerization of DNA on a single-stranded DNA template, as well as 3' to 5' exonucleolytic editing of mispaired nucleotides Ref-D.M.Vasudevan 7/e p538