Answer :
RNA polymerase binds to the promoter of the gene, events in transcription initiation likely occurs last.
A DNA fragment is copied into RNA during transcription. Messenger RNA is created when specific DNA sequences are translated into RNA molecules that can encode proteins (mRNA). Non-coding RNAs are RNA molecules that contain copies of other DNA sequences (ncRNAs). Only 1% to 3% of all RNA samples are mRNA. A minimum of 80% of mammalian genomic DNA can be actively transcribed (in one or more types of cells), with the bulk of this 80% being ncRNA. In contrast, less than 2% of the human genome can be transcribed into mRNA. The RNA is known as messenger RNA (mRNA) if the stretch of DNA is translated into an RNA molecule that encodes a protein. The mRNA then acts as a template for the translation of the protein. Other DNA stretches may be translated into larger non-coding RNAs like ribosomal RNA (rRNA) and long non-coding RNA as well as smaller non-coding RNAs like microRNA, transfer RNA (tRNA), small nucleolar RNA (snoRNA), small nuclear RNA (snRNA), or enzymatic RNA molecules called ribozyme. Overall, RNA is essential for carrying out tasks within a cell since it aids in the synthesis, control, and processing of proteins.
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