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MCAT Biology Question — Virus Genome

  • by John
  • Dec 05, 2014
  • MCAT Biology, MCAT Blog, MCAT Question of the Day

A virus may carry its genome through which of the following?

 

I. Single stranded RNA

II. Single stranded DNA

III. Double stranded DNA

 

A) I and II only

B) II and III only

C) I and III only

D) I, II, and III

 

Explanation

 

Viruses demonstrate a larger variety in their genomes than any other form of life. Their genomes may be composed of DNA or RNA, may be single or double stranded, may be linear or circular, and may be a single unit or segmented into several pieces. Thus (D) is the correct answer.

 

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