Which of the Following is True Regarding Eukaryotic Transcription Factors

Question

Which of the following is true regarding eukaryotic transcription factors?
A) Most eukaryotes have only one or a few transcription factors.
B) Many transcription factors have dimerization motifs.
C) Eukaryotic transcriptional activation does not require protein-protein interactions.
D) Transcription factors can be active only when they form homodimers.
E) Homeodomains are a class of transcription factors.

Accepted Answer

Many transcription factors have dimerization motifs, which allow them to form complexes with other transcription factors and bind DNA sequences with greater affinity and specificity. This enhances the efficiency and regulation of gene expression. Options A, C, and D are incorrect as they are not true statements. Option E is partially true, as homeodomains are a specific class of transcription factors, but not all transcription factors belong to this class.