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Which one of the following vectors is used to replace the defective gene in gene therapy?

1. Ti plasmid
2. Adenovirus
3. Cosmid
4. Ri plasmid

Correct answer: Adenovirus

Solution

Adenoviruses are widely used as gene therapy vectors because they can efficiently deliver a functional gene into human cells. They are modified so they cannot cause disease, but they still act as carriers for the replacement gene.

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