A central feature of genetic regulation is that proteins called transcription factors bind to non-coding _____, thus regulating the _______ of genes.
Adv.
The synthesis of RNA (ribonucleic acid) from DNA (deoxyribonucleic acid) is called transcription. Transcription is carried on by the enzyme RNA polymerase. It will be loaded onto the coding region of DNA and transcribes it. The loading of RNA polymerase is facilitated by the binding of some proteins to promoter. These proteins are called transcription factors.
Further, the activity of RNA polymerase is regulated by some other proteins that bind to enhancer. Both the promoter and enhancer are non-coding DNA sequences.
Hence, the correct answers are DNA sequences, and transcription.