There is a little symbol at the bottom of my main screen that seems to come and go for no reason... it looks like a little cell phone with a curved arrow pointing to it. It is centered above the MENU option on the main screen.
Transcription factors are proteins that bind to specific DNA sequences in order to regulate the expression of a given gene. The power of transcription factors resides in their ability to activate and/or repress wide repertoires of downstream target genes.
The lac Operon: An Inducer Operon A major type of gene regulation that occurs in prokaryotic cells utilizes and occurs through inducible operons. Inducible operons have proteins that can bind to either activate or repress transcription depending on the local environment and the needs of the cell.