In eukaryotes that step removes introns and links the remaining exons together in the resultant molecule.  
This process is enhanced by proteins such as AP-1 and NFkappaB  The sigma factor is required for it to be efficient in prokaryotes, and it can be inhibited by alpha-amanitin, and in eukaryotes it is followed by a processing step that includes cap synthesis and splicing.  In eukaryotes that step removes introns and links the remaining exons together in the resultant molecule.  FTP, identify this biological process by which messenger RNA is generated.
This process is enhanced by proteins such as AP-1 and NFkappaB  The sigma factor is required for it to be efficient in prokaryotes, and it can be inhibited by alpha-amanitin, and in eukaryotes it is followed by a processing step that includes cap synthesis and splicing.  
transcription