Transgenic Plant
Resistance to sulphonyl urea compounds in transgenic tobacco plant has been developed by the transfer of

gene for ALS (acetolactate synthase)
gene for GS (glutamine synthase)
gene for EPSPS (5-enol-pyruvyl shikimat 3 phosphate synthase)
any of the above

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Transgenic Plant
Expression of antisense RNA in transgenic plants is a general method used to

reduce or eliminate the expression of individual genes
eliminate the expression of all genes in a biochemical pathway
block the expression of virus coat protein genes
activate the expression of all genes in a biochemical pathway

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