Biotechnological Applications in Agriculture Questions in English

(B) $RNA$ interference $(RNAi)$ is a biological process in which $RNA$ molecules inhibit gene expression or translation by neutralizing targeted $mRNA$ molecules. This process is initiated by double-stranded $RNA$ $(ds-RNA)$,which binds to the complementary $mRNA$ sequence,thereby preventing its translation into protein.

(C) The toxin proteins produced by $Bacillus$ $thuringiensis$ $(Bt)$ are encoded by specific $cry$ genes.
Specifically,the gene $cryIAc$ is used to control cotton bollworms.
The gene $cryIAb$ is used to control corn borers.
Therefore,the correct pair is $cryIAc$ and $cryIAb$.