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Question

Which one of the following virus contains both DNA and RNA?

A
Cyanophage
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B
Herpes virus
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C
Leuko virus
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D
Polio virus
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Solution

The correct option is C Leuko virus
Leuko virus is a retrovirus also called as RNA-DNA virus. These virus possess reverse transcriptase. This enzyme builds DNA over RNA genome. This phenomenon is called, reverse transcription or teminism. The copy DNA OR cDNA builds its own complementary strand.

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