B0001711 DNA transcription diagram
Credit: Pete Jeffs. Wellcome Images
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Transcription is the process by which an RNA copy
of the DNA coding strand is made by RNA
polymerase in the cell’s nucleus. It then moves
out into the cytoplasm where it is translated into
protein. The promotor sequence guides the RNA
polymerase to the start site where the DNA unwinds
to allow the free ribonucleoside triphosphtes to
pair with the bases of the coding strand of the
DNA. These bases are then linked to each other by
the polymerase. When the polymerase reaches the
termination signal the new RNA strand is released.
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