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Lactose Operon
. Such an mRNA transcribed from many genes is described as Polycistronic. The functioning of these cistrons is controlled by a stretch of DNA called operator, located next to the cistron Z. The cistrons synthesize mRNA when the operator switch is turned on and stop the synthesis when the ..
Gene Regulation in Eukaryotes
In eukaryotes, the genes that code for the enzymes needed to catalyse the various steps of a particular metabolic pathway may not be adjacent or even be in different chromosomes. However, these genes are regulated by operon model as in bacteria. Both the inducible and the repressible syst..
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