St. Thomas, St. John, and St. Croix-the three islands known to many as the U.S. Virgin Islands, and the reason millions of travelers head to the Caribbean every year.
This copying process is called transcription and the copy is mRNA. Transcription takes place in the cytoplasm (prokaryote) or in the nucleus (eukaryote). The transcription is performed by an enzyme called RNA polymerase. To make mRNA, RNA polymerase: 1  Binds to the DNA strand at a specific sequence of the gene called a promoter. 2  Unwinds and unlinks the two strands of DNA. 3  Uses one of the DNA strands as a guide or template.
There are three stages that make up DNA transcription. First, DNA is transcribed by an enzyme called RNA polymerase. Then, transcription factors elongate the DNA strand and allow RNA polymerase to transcribe only a strand of DNA into a RNA polymer called messenger RNA. Finally, RNA polymerase continues along the DNA until it reaches what is called a terminator sequence.