Enhancers in eukaryotic genomes
- A
Are repetitive DNA sequences that loop to silence promoters when repressor proteins bind to them
- Bcheck_circle
Are distant DNA sequences that loop to contact promoters and boost transcription when activator TFs bind
- C
Are part of the core promoter where RNA polymerase II directly assembles to begin transcription
- D
Are coding regions transcribed and translated into regulatory proteins that boost gene expression
Explanation
Enhancers can be far upstream, downstream, or even within genes; DNA looping brings them close to promoters.