Which is an example of regulation of eukaryotic transcription?
A) Iron binding the repressor protein for the ferritin mRNA and increasing ferritin expression
B) Proteasome breakdown of protein-polyubiquitin complexes
C) MicroRNAs binding their target mRNA and causing its degradation
D) Alternative splicing of an mRNA transcript
E) Activator proteins binding an enhancer

Question

Quizplus · Accepted Answer

Activator proteins bind to enhancers, which are specific DNA sequences that are located near the start site of a gene. The binding of activator proteins can increase the rate of transcription initiation, leading to increased expression of the gene.

Answer: D
 Alternative splicing of an mRNA transcript is a process in which different exons are included or excluded from the final mRNA product. This can result in the production of multiple proteins from a single gene and can therefore regulate gene expression.

Both choices E and D are correct as they are both examples of regulation of eukaryotic transcription.

Which Is an Example of Regulation of Eukaryotic Transcription