Question

Which regions help attach the DNA to scaffolding proteins and may also serve to separate transcriptionally active regions?

1) Promoter regions
2) Enhancer regions
3) Repressor regions
4) Operator regions

Answer 1

Enhancer regions are binding sequences for transcription factors that help attach DNA to scaffolding proteins and may separate transcriptionally active regions.

Step-by-step explanation:

Enhancer regions are binding sequences for transcription factors. These regions are located upstream, downstream, or even thousands of nucleotides away from the genes they enhance. When an enhancer region binds to a DNA-bending protein, the DNA shape changes, allowing interaction with transcription factors bound to the promoter region and RNA polymerase. This interaction helps attach the DNA to scaffolding proteins and may also serve to separate transcriptionally active regions.