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Question

Which of the following statement is not true for retrovirus?

A
DNA is not present any stage in the life cycle of retroviruses
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B
Retroviruses carry gene for RNA dependent DNA polymerase
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C
The genetic material in mature retroviruses is RNA
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D
Retroviruses are causative agents for certain kinds of cancer in man
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Solution

The correct option is A DNA is not present any stage in the life cycle of retroviruses
Retroviruses are so named because they contain the enzyme reverse transcriptase or RNA-dependent DNA polymerase (RdRP). The genetic material of these viruses is RNA. From their genetic RNA they produce DNA using RdRP; e.g., Rous sarcoma virus.

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