Question

How many types of RNA polymerase required for RNA synthesis?

• A. In prokaryotes, three different types of RNA polymerases are required, where RNA polymerase II transcribes mRNA genes and 5S rRNA genes.
• B. In eukaryotes, three different types of RNA polymerases are required, where RNA polymerase II transcribes mRNA genes and 5S rRNA genes.
• C. In eukaryotes, three different types of RNA polymerases are required, where RNA polymerase II transcribes mRNA, miRNA, snRNA genes.
• D. In eukaryotes, five different types of RNA polymerases are required, where RNA polymerase III transcribes mRNA, miRNA, snRNA and snoRNA genes.

Answer 1

Answer: (C)

Eukaryotes have three types of RNA polymerases: RNA polymerase I transcribe rRNA genes, RNA polymerase II transcribes mRNA, miRNA, snRNA, and snoRNA genes, and RNA polymerase III transcribes tRNA and 5S rRNA genes.