Question

Which of the following is not synthesized by $RNA$ polymerase III?

• A. tRNA
• B. snRNA
• C. 5S rRNA
• D. 5.8S rRNA

Answer 1

Answer: (D)

In eukaryotes, three types of $RNAs$ are synthesized by three different RNA polymerases.
$RNA$ polymerase I synthesizes $rRNA$ $(\text{28S, 18S, and 5.8S})$ .
RNA polymerase II synthesizes the hnRNA precursor of mRNA.
$\text{RNA}$ polymerase III synthesizes $\text{tRNA}$ , $\text{5S rRNA,}$ and $\text{snRNA}$ .