$A$ : $RNAi$ takes place in all eukaryotic organisms as a method of cellular defense.

$R $ : Complementary $dsRNA$ molecule binds to specific $mRNA$ and prevents its translation (silencing).

Which of the following $Bt$ crops is being grown in India by the farmers?

……….. gene control the corn borer.

Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin ‘$A$’ deficiency?

In $Bt$ cotton, the $Bt$ toxin present in plant tissue as protoxin is converted into active toxin due to