This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Which enzyme polymerises okazaki fragments ? \nSelect and explain. \nA. DNA polymerase I, B. DNA polymerase II, C. DNA polymerase III, D. RNA polymerase', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., DNA polymerase III Two DNA polymerases act on Okazaki fragments :? DNA polymerase :- Causes polymerization of okazaki fragments, i.e. synthesis of DNA on lagging strand. It also causes synthesis of leading strand. DNA polymerase I :- It fills the gap between okazaki fragments when their polymerization is completed, i.e. when the synthesis on lagging strand is completed, DNA polymerase I fills the gap between fully polymerized okazaki fragments. Thus, DNA polymerase III is involved during 'elongation' (polymerization of okazaki fragments) and DNA polymerase I is involved during 'termination' (filling the gaps between okazaki fragments).", 'role': 'assistant'}]