Viruses
The temperate phage that have no site specificity for insertion and may even be able to insert multiple copies of their DNA into a single bacterial chromosome is

Phage Mu
λ DNA
Phage Mn
λ phage enzyme

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Viruses
The oncogene theory refers to

how viruses transform normal cells into tumor cells
how viruses replicate in host cells
none of these
how chemicals inactivate viruses when applied

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