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Which one of the following is used as vector for cloning genes into higher organisms?

1. Baculovirus
2. Salmonella typhimurium
3. Rhizopus nigricans
4. Retrovirus

Correct answer: Retrovirus

Solution

Retroviruses are commonly used as vectors because they can insert their genetic material into the genome of host cells, including cells of higher organisms. This makes them effective tools for stable gene cloning and transfer.

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