Answer: Initiation is the beginning of transcription. It occurs when the enzyme RNA polymerase binds to a region of a gene called the promoter. This signals the DNA to unwind so the enzyme can “read” the bases in one of the DNA strands. The enzyme is ready to make a strand of mRNA with a complementary sequence of bases.
Elongation is the addition of nucleotides to the mRNA strand.
Termination is the ending of transcription. The mRNA strand is complete, and it detaches from DNA
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