Question

You have analyzed the $DNA$ isolated from a newly discovered virus and found that its base composition is $32\%A,17\%C,32\%G$, and $19\%$ T. What would be a reasonable explanation of this observation?

• A. The virus must be extraterrestrial
• B. In some viruses, double-stranded $DNA$ is made up of base pairs containing two purines or two pyrimidines
• C. Some of the $T$ was converted to $C$ during the isolation procedure
• D. The genome of the phage is single-stranded, not double-stranded

Answer 1

Answer: (D)

Correct answer is (d) The genome of the phage is single-stranded, not double-stranded