Which of the following is true of a viral DNA genome?
A. Viruses use only RNA for their genome.
B. It is usually composed of unusual bases unique to viruses.
C. It uses the same four nitrogenous bases found in prokaryotic and eukaryotic DNA.
D. It may have the normal bases found in prokaryotic and eukaryotic DNA, or it may have one or more unusual bases.
Answer: C
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