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The genome of the Coronaviridae consists of

  • A.single-stranded positive-sense RNA
  • B.double-stranded DNA
  • C.single-stranded negative-sense RNA
  • D.double-stranded RNA

Answer: A

Coronaviruses carry positive-sense single-stranded RNA, one of the largest genomes among RNA viruses, and being plus-strand it can be translated directly on arrival. Adenoviruses and poxviruses are the double-stranded DNA families, and double-stranded RNA belongs to the reoviruses.

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