Topic: Tools: restriction enzymes, vectors, host· Biotechnology and Its Applications

Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes ?

1. Retrovirus

2. λ phage

3. Ti plasmid

4. pBR 322

Doubtly Asked 30 Oct 2026 NEET UG 2018 Practice test neet Save WhatsApp Report

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Answer: 1. Retrovirus

To put a gene into animal cells such as human lymphocytes, disarmed retroviruses are used as vectors.

Retroviruses infect animal cells and integrate into the host genome. \(\lambda\) phage and pBR322 are for bacteria, and the Ti plasmid is for dicot plants.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes ?

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