NEET 2019 Odisha · BiologyPrevious Year Question
In RNAi, the genes are silenced using: (NEET 2019 (Odisha))
Answer: (A) ds-RNA. Answer: (A) ds-RNA Solution: RNA interference silences a specific mRNA through a complementary double-stranded RNA (dsRNA) molecule that binds the target mRNA and prevents its translation.
- A.ds-RNA✓
- B.ss-DNA
- C.ss-RNA
- D.ds-DNA
Correct Answer
(A) ds-RNA
Solution & Explanation
Answer: (A) ds-RNA Solution: RNA interference silences a specific mRNA through a complementary double-stranded RNA (dsRNA) molecule that binds the target mRNA and prevents its translation. In the nematode-resistance strategy, sense and anti-sense RNAs pair to form dsRNA that initiates RNAi. Hence genes are silenced using ds-RNA. NCERT Reference: Ch 10, p.180, line 015 — "involves silencing of a specific mRNA due to a complementary dsRNA"
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