How is the RNAi mechanism initiated in the host plant?

How is the RNAi mechanism initiated in the host plant?
  1. By the introduction of DNA
  2. By the presence of complementary RNA
  3. By the formation of dsRNA
  4. By the presence of specific interfering RNA

Solution

The RNAi mechanism is initiated in the host plant by the formation of double-stranded (dsRNA) from complementary sense and anti-sense RNA introduced into the host cells through Agrobacterium vectors. The dsRNA initiates RNAi and silences the specific mRNA of the nematode.

Asked in: NCERT

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