In E. Coli, The Trp Operon Is On By Default, While The Lac Operon Is Off. Why Do You Think This Is The Case?

[hammadqaiser]

In E. coli, the trp operon is on by default, while the lac operon is off. Why do you think this is the case?

[theprof]

Hmm, I thought I had seen this question before.

https://www.texasgateway.org/resource/162-prokaryotic-gene-regulation

The question is in the second grey box along with four multiple choice answers. I'll not tell you which answer is correct but you should be able to select the right one from the four possibilities if you've paid attention in your lectures. It's not difficult.

If you are still uncertain, I suggest you refer back to your lecture notes.

Telling you the answer will achieve nothing here but the bright side may be that at least I've shown you four possible answers rather than you remain totally clueless!