When I was 15 years old I got my first job at Burger King. This was the summer between my Sophomore and Junior year of high school. Literally the second day on the job, a woman and her three kids pulled up in the drive through. Still being naive and thinking everyone was a good person, I happily greeted them.
2 years ago. The difference between positive and negative control over transcription is that positive control promotes transcription and increases the frequency of initiation of transcription while negative control of transcription prevents the initiation of transcription and acts a repressor when glucose is present.
Negative vs Positive Control. 1  While the Trp operon is an example of repressible gene regulation and the Lac operon is an example of inducible gene regulation, both are examples of negative control of genes because both operons are shut off by an active repressor.lick here if you do not have it. Class Notes [Introduction] [The Trp Operon] [Repressible vs Inducible Systems] [The Lac Operon] [Negative vs Positive Control] Introduction E. coli is a bacteria that lives in your colon. It has a metabolic pathway that allows for the synthesis of the amino acid tryptophan (Trp).