Given below are two statements. One is labelled Assertion (A) and the other is labelled Reason (R).
Assertion (A) : RNA interference prevents infestation of nematode Meloidogyne incognitia which infects the roots of tobacco plants.
Reason (R) : RNA interference method involves silencing of a specific mRNA due to a complementary dsRNA.
In light of the above statements, choose the correct answer from the options given below.

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Both A and R are true and R is the correct explanation of A

Both A and R are true, but R is not the correct explanation of A.

A is true, but R is false

A is false, but R is true

answer is A.

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Detailed Solution

Assertion (A) is true. RNA interference (RNAi) is a mechanism used by plants to defend against pathogens such as nematodes. In the case of tobacco plants infected by the nematode Meloidogyne incognita, RNAi can be used to silence specific genes essential for the nematode's survival, thereby preventing infestation.
Reason (R) provides an explanation of how RNA interference works. RNA interference involves the introduction of double-stranded RNA (dsRNA) molecules that are complementary to specific mRNA sequences. These dsRNA molecules trigger the degradation of the targeted mRNA, leading to the silencing of gene expression. By targeting essential genes in the nematode, RNA interference can effectively prevent infestation.
Therefore, Assertion (A) is supported by Reason (R), making both statements true.

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