Q. Certain RNA viruses carry a gene for an enzyme that uses viral RNA as a template in the synthesis of DNA. This enzyme is

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Solution:

The enzyme reverse transcriptase uses RNA of virus to synthesize a complementary strand of DNA, which in return is replicated to form double stranded DiNi. It was discovered by Temin and Baltimore.
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Viral nuclease : Nucleases are enzymes that break down nucleic acid to nucleotides.