The answer is a terminator or transcription terminator. It is part of nucleic acid sequence that marks the end of a gene in DNA during transcription. This progression intercedes transcriptional termination by giving
signals in the newly synthesized mRNA that activate processes which release the mRNA from the transcriptional
complex. These processes comprise the direct interaction of the mRNA
secondary structure with the complex and the meandering activities of
recruited termination
factors.
