Gene expression can be controlled with the help of RNA. Explain the method with an example.

Explanation

RNAi technology is used to block the expression of certain genes and also referred to as gene silencing During this process a complementary RNA to the mRNA being produced by the gene is introduced into the cell. This RNA binds to the mRNA making it double stranded and therefore, stops the process of trasnlation.
e.g. a nematode Meloidegyne incognitia infects the roots of tobaccoo plants which reduces the production of tobacco.
It can be prevented by using RNA interference (RNA) process which is checked by silencing of specific mRNA due to a complementary dsRNA.
dsRNA binds and prevents the trasnlation of mRNA (silencing). by using Agrobacterium vectors, Nematode-specific mRNA due to a complementary dsRNA.
dsRNA binds and prevents the trasnlation of mRNA (silencing). by using Agrobacterium vectors. Nematode-specific genes were introduced into the host plants which produces vectros . Nematode-specific genes were introduced into the host plants which produces both sence and anti-sence RNA in the host cells.
These two RNAs are complemen tary to each other and form a double-stran ded RNA (dsRNA) that initiates RNAi and hence, silence the specific mRNA of the nematode. the parasite cannor survive in transgenic host and so prevents the plants from p ests.