Lac operon is expressed 20-fold more when lactose is present. Activator binds to the promotor of the genes involved in digesting arabinose and promotes their transcription when the sugar arabinose is present.
What is an illustration of adverse gene regulation?
The top operon, which is controlled by a negative feedback loop, is a classic illustration of negative repressible regulation of gene expression.
What does "positive gene regulation" mean?
Negative gene regulation, on the other hand, refers to the kind of gene control that hinders the expression of genes. Positive gene regulation is the latter. Thus, the primary distinction between positive and negative gene regulation is this.
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