There is a theoretical protein called largeX that helps to stimulate growth of the body during adolescence. The promoter on the lrgX gene that codes for it is normally able to have a protein bind to it that promotes transcription called largene. Largene, bound to the promoter, can receive yet another signal in the form of largeXase—a protein that changes the conformation of largene so that it can no longer bind to the promoter.
It would be accurate to describe the lrgX operon as both
positive and repressible
negative and repressible
positive and inducible
negative and inducible
positive and repressible
I think its c
The lrgX operon can be described as both positive and repressible.
To determine the correct description for the lrgX operon, we need to understand the terms positive, negative, repressible, and inducible in the context of gene regulation.
Positive regulation refers to the process where a regulatory protein binds to the promoter region of a gene, thereby enhancing the transcription process.
Negative regulation, on the other hand, involves the binding of a regulatory protein to the promoter region, causing the inhibition or suppression of transcription.
Repressible regulation occurs when the presence of a specific substance or signal causes the repression of gene expression.
Inducible regulation occurs when the presence of a specific substance or signal activates or induces gene expression.
Based on the given information, we can conclude that the lrgX operon is positively regulated because the binding of the protein largene to the promoter enhances transcription. Additionally, the operon also exhibits repressible regulation since the protein largeXase can change the conformation of largene, preventing it from binding to the promoter and thus repressing transcription.
Therefore, the accurate description for the lrgX operon is positive and repressible.