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NEET 2026
Exam
NEET
Year
2026
Subject
Biology
Chapter
Chapter

NEET 2026 · Biology · Chapter

In the process of RNA interference (RNAi) utilized to develop...

In the process of RNA interference (RNAi) utilized to develop nematode-resistant plants, the source of the complementary RNA could be:

Options

  1. AMobile genetic elements that replicate via an RNA intermediate
  2. BCry genes isolated from Bacillus thuringiensis
  3. CSelectable marker genes such as ampRamp^{R} or tetRtet^{R}
  4. DT-DNA from the Ti plasmid of Agrobacterium tumefaciens

Correct answer

A. Mobile genetic elements that replicate via an RNA intermediate

Step-by-step solution

RNA interference (RNAi) is a method of cellular defense present in all eukaryotic organisms. It involves the silencing of a specific mRNA due to a complementary dsRNA molecule that binds to and prevents translation of the mRNA.

The source of this complementary RNA could be from an infection by viruses having RNA genomes or mobile genetic elements (transposons) that replicate via an RNA intermediate.

Therefore, mobile genetic elements that replicate via an RNA intermediate serve as a source of complementary RNA in the process of RNA interference.

Answer: Mobile genetic elements that replicate via an RNA intermediate
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