A) RNA polymerase
B) reverse transcriptase
C) viral nuclease
D) RNA replicase
Correct Answer: B
Solution :
Temin discovered reverse transcriptase with the help of antibiotic actinomycin D. The drug inhibits synthesis of RNA on DNA template. The enzyme reverse transcriptase catalyses the synthesis of DNA or RNA template, this process is called reverse transcription. The DNA synthesized is called cDNA (complementary DNA). The enzyme RNA polymerase catalyses the synthesis of RNA on DNA template. This process is called transcription. In eukaryotes three types of RNA polymerase, ie, I, II and III are found.
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