You believe that you have isolated a new strain of positive-sense, single-stranded RNA virus and set about studying it in your laboratory. Which of the following lines of evidence would most strongly support your hypothesis that the virus is a [+]ssRNA?
A) The virions are diploid.
B) You sequence the bases in the viral RNA and the mRNA and find them to be antiparallel.
C) Introducing a protease inhibitor causes the virus to stop producing proteins and reproducing.
D) Introducing a reverse transcriptase inhibitor slows down the growth of the virus.
Answer: C
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