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 of the following enzyme is involved in rejoining sho fragments of DNA on the lagging strand? \nSelect and explain. \nA. DNA Ligases, B. DNA Helicase, C. DNA Topoisomerase, D. DNA Polymerase', 'role': 'user'}, {'content': "Answer: A \nExplanation: The okasaki fragments that are sho segments of DNA formed on the lagging strand of DNA in the 5'-3' direction are joined by DNA ligase. Ref: Textbook of Biochemistry By D M Vasudevan, 3rd Edition, Pages 347-8", 'role': 'assistant'}]