The RNA polymerase holoenzyme binds to a promoter of an exposed DNA strand and begins to synthesize the new strand of RNA. The double helix DNA is unwound and a short nucleotide sequence is accessible on each strand.
The RNA polymerase holoenzyme binds to a promoter of an exposed DNA strand and begins to synthesize the new RNA strand. The double helix DNA is unzipped, and a short nucleotide sequence is accessible on each strand.