In Eukaryotes, mRNA is produced by: (A) RNA Polymerase I, (B) RNA Polymerase II, (C) RNA Polymerase III, (D) RNA Polymerase IV
Answer is B. There is only 1 RNA polymerase in prokaryotes. There are 3 eukaryotic RNA polymerases Type Location RNA transcribed Effect of a-amanitin I Nucleolous 18, 5.8, 28 rRNA Insensitive II Nucleoplasm mRNA, miRNA, snRNA Highly sensitive III Nucleoplasm tRNA, 5s rRNA , U6 snRNA Less sensitive