$A$ : Biofortified crops such as golden rice are helpful in overcoming the problem of night blindness in developing nations.
$R $ : It has enhanced nutritional content of vitamin $A.$
Assertion and Reason both are correct and also correct explanation.
Assertion and Reason both are correct but not explanation of assertion.
Assertion is correct, but Reason is incorrect.
Assertion is correct, but Reason is incorrect.
Give information about $Bt$ cotton.
Assertion : Insect resistant transgenic cotton has been produced by inserting $Bt$ gene.
Reason : The $Bt$ gene is derived from a bacterium.
$A$ : $RNAi$ 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).
Genetic engineering is the
Gene expression can be controlled with the help of $\rm {RNA}$ . Explain the method with an example.