The elongation step of RNA transcription involves synthesis of the complementary RNA strand by RNA Polymerase.

University of Wisconsin - Madison

The steps of RNA transcription are shared between eukaryotes and prokaryotes. The steps of RNA Transcription are:

1. Initiation
2. Elongation
3. Termination

The Steps of RNA Transcription

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Prokaryotic transcription shares many similarities with eukaryotic transcription. However, prokaryotic transcription does not process RNA transcripts before transcription. They also use a single type of RNA polymerase for transcription unlike eukaryotes. Transcription occurs in the cytoplasm, unlike in eukaryotes. 

RNA Transcription in Prokaryotes

Initiation of transcription involves the transcription machinery binding to DNA to initiate transcription.

Initiation of RNA Transcription

Elongation of RNA Transcription

Termination occurs when RNA Polymerase dissociates from the DNA template and the RNA is now mobile. 

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