This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Which of the following type of RNA is involved in splicing? \nSelect and explain. \nA. mRNA, B. sn RNA, C. r RNA, D. t RNA', 'role': 'user'}, {'content': 'Answer: B \nExplanation: snRNA is involved in RNA splicing i.e removal of introns from hnRNA, regulation of transcription factors or RNA polymerase II and in the maintenance of telomeres. snRNA is a class of small RNA molecules that are found within the nucleus of eukaryotic cells. They are transcribed by RNA polymerase II or RNA polymerase III. Ref: Maternal, Fetal and Neonatal Physiology: A Clinical Perspective By Susan Tucker Blackburn, Page 5; Essentials of Pathophysiology: Concepts of Altered Health States By Carol Mattson Poh, Page 93', 'role': 'assistant'}]