$RNA$ polymerase $II$ is responsible for the transcription of . . . . . .

In the processing of $hnRNA$ in eukaryotic cells,the primary transcripts are processed in the following sequence.

In a eukaryotic cell,how many types of $RNA$ and $RNA$ polymerases are found,respectively?

The $DNA$ strand that does not code for anything is called the ..........

$mRNA$ is formed by

Which of the following statements about $RNA$ polymerase are correct?
$i. \;RNA\; \text{polymerase } I \text{ transcribes } rRNAs.$
$ii. \;RNA \; \text{polymerase } II \text{ transcribes } snRNAs.$
$iii. \;RNA \; \text{polymerase } III \text{ transcribes } hnRNA.$
$iv. \;RNA \; \text{polymerase } II \text{ transcribes } hnRNAs.$