explain in detail. . .
what is the difference between negative control and positive control in lac operon regulation.
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The activity of pro meter that's controls the expression of lac of operon regulation is regulated by two different proteins. One of the proteins prevents the RNA Polymerase negative control ,the other enhances the binding of RNA Polymerase to protometer or positive control.
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Negative control is when the regulatory protein is a repressor. It binds to the operon and inhibits transcription. Like a switch, the regulatory protein turns gene expression off. And Positive control is when the regulatory protein is an activator.
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