Summary:
- Transcription is the first part of the central dogma of molecular biology: DNA → RNA.
- It is the transfer of genetic instructions in DNA to messenger RNA (mRNA) Transcription takes place in three steps: initiation, elongation, and termination.
- The new mRNA is not yet ready for translation.
- It must go through additional processing before it leaves the nucleus.
- This may include splicing, editing, and polyadenylation.
- These processes modify the mRNA in various ways.
- Such modifications allow a single gene to be used to make more than one protein.