MCQ
Temin worked on which of the following virus?
  • A
    Rhinovirus
  • B
    Dengue virus
  • C
    Herpes virus
  • D
    Retrovirus

Answer

  1. Retrovirus

Explanation:

H. Temin and D. Baltimore showed that the retroviruses namely Rous sarcoma virus and the AIDS virus can make an RNA-dependent DNA polymerase that synthesizes a DNA copy (cDNA) of viral RNA.

The cDNA is made into double stranded molecule which is integrated into host genome where it is replicated and transcribed with host DNA; the topsy curvy path of flow of genetic information, i.e., RNA-DNA-RNA-protein.

The enzyme was termed as reverse transcriptase. Rhinovirus, dengue virus and herpes viruses are not retroviruses and follow the linear path of flow of genetic information DNA-RNA-protein.

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