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Examples of operons
Inducible operon- no usually transcribed and need to be activated by inducers. (Normally is off). Lactose operon: Inducer is lactose, inactivates the repressor.Repressible operon- transcribed continually until deactivated by repressors. Tryptophan operon: tryptophan acts as a corepressor, combines with a repressor to block the operator.