There are different groups of cry g

There are different groups of cry genes that are
active against specific groups of insect pests: cry1 group against Lepidopteranpests and cry 3 group against Coleopteranpests . Efforts on the development
of insect resistant transgenic crops have been reviewed by many
authors .
Some of the specificcrygenes used so far include thecry1Abgene
against maize corn borer in maize ,
cry1Ab/cry1Ac genes against cotton bollworm in cotton and against stem borers in rice,
andcry3Agene against potato beetle in potato