The first step in protein synthesis is the process of transcription. During transcription, the DNA molecule unwinds and unzips in the region of the gene that is to be expressed. The enzyme RNA polymerase then binds to the DNA template strand and synthesizes a complementary RNA strand (mRNA) by adding RNA nucleotides that are complementary to the DNA template. This newly formed mRNA strand is a copy of the gene and will serve as the template for protein synthesis during the next step, known as translation.
What must the DNA do as the first step in protein synthesis?
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