What is the sequence which a retro virus follows on entering a host cell ?
Correct answer: A. RNA -DNA-RNA
- A. RNA -DNA-RNA
- B. RNA-DNA
- C. DNA-RNA
- D. DNA-RNA-DNA
Explanation
A retrovirus follows the sequence RNA to DNA to RNA: reverse transcriptase makes DNA from the viral RNA, and the integrated DNA is later transcribed into RNA. This RNA serves as viral genome and messenger RNA.
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