Final answer:
General Transcription Factors (GTFs) have three roles: recruiting RNA polymerase to initiate transcription, regulating the frequency of transcription through enhancer regions, and responding to environmental stimuli to initiate transcription of specific genes.
Step-by-step explanation:
The three roles of General Transcription Factors (GTFs) are:
- Binding to the promoter region on the DNA molecule and recruiting RNA polymerase to initiate transcription.
- Regulating the frequency of transcription by interacting with enhancer regions, which can be upstream, downstream, or within a gene itself.
- Responding to environmental stimuli and initiating transcription of specific genes by binding to a particular DNA sequence motif on the promoter.