alleryIn eukaryotes, which RNA polymerase transcribes the precursor of mRNA (hnRNA)?
ARNA polymerase I
BRNA polymerase II
CRNA polymerase III
DRNA polymerase IV
Answer & Solution
Correct answer: B. RNA polymerase II
Eukaryotes have three nuclear RNA polymerases: pol I makes rRNAs (28S, 18S, 5.8S), pol II makes hnRNA (mRNA precursor), and pol III makes tRNA, 5S rRNA and snRNAs.
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