This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Human Immunodeficiency Virus, Subject name: Microbiology
[{'content': 'Reverse Transcriptase is - \nSelect and explain. \nA. DNA polymerase, B. DNA dependant RNA polymerase, C. RNA dependant DNA polymerase, D. None', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e. RNA dependent DNA polymerase The Characteristic biochemical feature of retroviruses is the presence of RNA dependent DNA polymerase (reverse transcriptase)o Wrhen the virus infects a cell, the viral RNA is transcribed by reverse transcriptase, first into single stranded DNA and then to double stranded DNA", 'role': 'assistant'}]