Question

Write the number of RNA polymerases involved in the transcription of DNA in a prokaryote and eukaryotes.

Hint:

In prokaryotes, a single RNA polymerase performs all RNA synthesis, whereas eukaryotes use three specialized polymerases for different types of RNA.

Answer 1

• Prokaryotes possess one RNA polymerase.
• Eukaryotes utilize three RNA polymerases: RNA polymerase I, II, and III.
• In prokaryotes, a single RNA polymerase is responsible for producing all RNA types (mRNA, tRNA, and rRNA).
• Eukaryotes employ specialized RNA polymerases:
  • RNA polymerase I synthesizes rRNA.
  • RNA polymerase II synthesizes mRNA.
  • RNA polymerase III synthesizes tRNA and certain small RNAs.