Transcription is the process in which information from the DNA strand is copied into a new molecule, mRNA, or messenger RNA. Various enzymes play a crucial role in the unzipping and copying of DNA molecules.
Transcription is one of the vital processes of the central dogma, in which a single strand of DNA is transcribed into a single strand of mRNA.
Transcription is carried out by RNA polymerase and several transcription factors.
The three stages of transcription include:
1. Initiation
2. Elongation
3. Termination
During the transcription, the double-helical structure of DNA is unwinded and forms a single strand of DNA. The single strand of DNA is then converted into the mRNA with the help of enzyme RNA polymerase.
Therefore, the single strand of mRNA is produced by the DNA transcription.
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