Question

In eukaryotic transcription, the carboxy-terminal domain (CTD) of RNA polymerase II is essential for:

• A. DNA binding specificity
• B. Sigma factor recruitment
• C. RNA splicing, capping, and polyadenylation coordination
• D. Enhancer binding

Hint:

The carboxy-terminal domain (CTD) of RNA polymerase II is essential for coordinating RNA processing events such as splicing and polyadenylation.

Answer 1

The Correct Option is C

The CTD of RNA polymerase II plays a crucial role in coordinating several steps of RNA processing, including capping, splicing, and polyadenylation. The phosphorylation of the CTD tail helps recruit the necessary enzymes for these processes.