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Which of the following enzyme is said as reverse transcriptase?

(a) DNA dependent DNA polymerase

(b) RNA dependent RNA polymerase

(c) RNA dependent DNA polymerase

(d) DNA dependent RNA polymerase

I had been asked this question in exam.

This interesting question is from Polymerases in division Basics of Genetic Engineering of Genetic Engineering

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Right choice is (c) RNA dependent DNA polymerase

Easy explanation: RNA dependent DNA polymerases are said as reverse transcriptase and the function follows it name. The function is to reverse the phenomenon of general transcription, in which RNA is synthesized from DNA. But here it is reversed and DNA is synthesized by using RNA as a template.

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