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Question

(A) The transgenic tobacco plant was developed using $	ext{RNA}$ interference $(	ext{RNAi})$ technology to provide resistance against the nematode $

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$A$ nematode $-$ $	ext{Meloidogyne incognita}$

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(A) The transgenic tobacco plant was developed using $	ext{RNA}$ interference $(	ext{RNAi})$ technology to provide resistance against the nematode $	ext{Meloidogyne incognita}$.$	ext{RNAi}$ is a cellular defense mechanism in eukaryotes where specific double-stranded $	ext{RNA}$ $(	ext{dsRNA})$ molecules inhibit gene expression by causing the degradation of complementary messenger $	ext{RNA}$ $(	ext{mRNA})$.In this process,$	ext{Agrobacterium}$ vectors are used to introduce nematode-specific genes into the host plant. These genes produce both sense and antisense $	ext{RNA}$ in the host cells,which form $	ext{dsRNA}$.When the nematode infects the transgenic plant,this $	ext{dsRNA}$ initiates the $	ext{RNAi}$ pathway,silencing essential genes in the nematode and preventing it from surviving or reproducing within the plant.

Transgenic tobacco,which is developed through $\text{RNA}$ interference,prevents the infestation of:

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