Question

UPSC Prelims 2021 Question:

With reference to recent developments regarding ‘Recombinant Vector Vaccine

consider the following statements:

Genetic engineering is applied in the development of these vaccines.

Bacteria and viruses are used as vectors.

Which of the statements given above is/are correct?

1. 1 only
2. 2 only
3. Both 1 and 2
4. Neither 1 nor 2

Answer (Detailed Solution Below)

Option 3: Both 1 and 2

Detailed Solution

Explanation:

Recombinant vector vaccines are live replicating viruses that are engineered to carry extra genes derived from a pathogen. These genetically engineered extra genes produce proteins against which we want to generate immunity. So, statement 1 is correct.
A vector is a DNA molecule (often bacteria or virus) that is used as a vehicle to carry a particular DNA segment into a host cell as part of a cloning or recombinant DNA technique. The vector typically assists in replicating and/or expressing the inserted DNA sequence inside the host cell. So, statement 2 is correct.

Therefore, option (3) is the correct answer.

Subject: Science & Technology | Health

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