Which of the following accurately describes the signal cascade in a typical gene regulatory network?
A) environmental signal triggers transcription factor; transcription factor binds cis-regulatory element; protein-coding gene activated
B) environmental signal binds cis-regulatory element; cis-regulatory element triggers transcription factor; protein-coding gene activated
C) environmental signal triggers expression of protein-coding gene; transcription factor binds cis-regulatory element; cis-regulatory element activated
D) none of the above

Question

Quizplus · Accepted Answer

In a typical gene regulatory network, an environmental signal triggers a transcription factor, which then binds to a cis-regulatory element, leading to the activation of a protein-coding gene. This sequence of events ensures precise control over gene expression in response to environmental cues.

Which of the Following Accurately Describes the Signal Cascade in a Typical