Question

Motifs are related structures present on the transcription factors constituting the _________________ domain.

(a) Activation

(b) DNA-binding

(c) RNA-binding domain

(d) Nucleic acid-binding

I have been asked this question by my school principal while I was bunking the class.

The origin of the question is Gene Expression Control in section Control of Gene Expression of Cell Biology

Answer 1

The correct option is (b) DNA-binding

To explain: The DNA-binding domains of various transcription factors contain related structures (believed to be conserved through evolutionary period) called motifs. The most common motifs in eukaryotes include zinc finger, the helix–loop–helix, and the leucine zipper.