The crops that are genetically modified crops or their gene is manipulated to perform a specific function are known as transgenic crops.
The gene is manipulated by the insertion of a foreign gene in a plasmid.
Transgenic crops are disease resistant, pest or insect resistant, and also they will give a high yield.
Example:
Bt cotton: Is produced bt the insertion of Bacillusthuringiensis bacteria into the cotton plant that helps in killing the insects that attack the plant.