Before revision: ->P } Transcribes another A ATCGTAGCAAATCGTAA } Original strand ATCGTAGCAAATCGTAAA } Growing new strand Note: Step 4 is repeated and new nucleotides are added to the 3' end.
After revision: 3->P } Transcribes another A ATCGTAGCAAATCGTAA } Original strand ATCGTAGCAAATCGTAAA } Growing new strand Note: Step 4 is repeated and new nucleotides are added to the 3' end.