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Starts where RNA polymerase attracts to the DNA double helix at the begining of a gene

The hydrogen bonds between the two DNA strands in the gene break, separating the strands and the DNA molecule uncoils

One of the stands is then used as a template to make an mRNA copy

The RNA polymerase lines up free RNA nucleotides alongside the template strand. Specific base pairing means that the mRNA strand ends up being complementary copy of


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