By Christopher Cronkite: Abstract Operons are regions of prokaryotic DNA that contain multiple genes without an interfering termination sequence. Because of this, the genes in an operon are all transcribed into a single mRNA. In this way, a cell can regulate transcription of multiple, related genes using the same mechanisms. In Escherichia coli, the lac operon codes for three proteins involved in lactose catabolism. Expression of this operon is regulated by both a repressor and enhancer that function dependent […]
