Which of the following is a reverse transcriptase?: (A) Topoisomerase 2, (B) Telomerase, (C) RNA polymerase 2, (D) DNA polymerase alpha
Answer is B. *Telomerase Is a Specialized Reverse Transcriptase.*Ceain RNA viruses that infect animal cells carry within the viral paicle an RNA-dependent DNA polymerase called reverse transcriptase.*The RNA viruses that contain reverse transcriptases are known as retroviruses.*Reverse transcriptases catalyze three different reactions: (1) RNA-dependent DNA synthesis, (2) RNA degradation, and (3) DNA- dependent DNA synthesis.Ref: Harper Biochemistry; 30th edition