The human immunodeficiency virus (HIV) uses RNA, rather than DNA, to encode genetic information. During infection, however, HIV uses an enzyme known as reverse transcriptase to generate double-stranded DNA. Generally speaking, how would the enzyme generate a double strand of DNA from a single strand of RNA?
A. Reverse transcriptase first catalyzes the synthesis of a RNA copy from the viral DNA, and then catalyzes the synthesis of a second strand of DNA complementary to the first one.
B. Reverse transcriptase first catalyzes the synthesis of a DNA copy from the viral RNA, and then catalyzes the synthesis of a second strand of DNA complementary to the first one.
C. Reverse transcriptase first catalyzes the synthesis of a DNA copy from the viral RNA, and then catalyzes the synthesis of a second strand of DNA from the viral RNA.
Answer: B
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