What is transcription?

Transcription is a process in which ribonucleic acid (RNA) is synthesizes from deoxyribonucleic acid (DNA). Thus the genetic information stored in DNA is expressed through RNA. For this purpose one of the two strands of DVA serves as a template (non coding strand or sense strand) and produces working copies of RNA molecule. The other DNA strand not participating in transcription is coding or anti-sense strand. RNAs are synthesized only for some selected region of DNA rather than entire DNA. A single enzyme RNA polymerase synthesizes all the RNAs in prokaryotes.