UPSC CSE Prelims
Question 40
With reference to recent developments regarding 'Recombinant Vector Vaccines', 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?
View correct answer and explanation
Correct answer: C
Correct Option: C (Both 1 and 2)
Explanation: Recombinant-vector vaccines are created by genetic engineering, which inserts genes for a target antigen into a carrier virus or bacterium.
Statement / Pair / Item-wise Analysis:
1. Correct / qualifies - Genetic engineering creates vectors expressing the selected pathogen antigen.
2. Correct / qualifies - Modified viral or bacterial carriers can deliver the antigen or antigen-encoding material.
Option-wise Analysis:
A. Incorrect-omits valid item 2 (Modified viral or bacterial carriers can deliver the antigen or antigen-encoding material).
B. Incorrect-omits valid item 1 (Genetic engineering creates vectors expressing the selected pathogen antigen).
C. Correct-selects exactly the supported statements/items: 1, 2.
D. Incorrect-omits valid item 1 (Genetic engineering creates vectors expressing the selected pathogen antigen); omits valid item 2 (Modified viral or bacterial carriers can deliver the antigen or antigen-encoding material).