JACOPIN / BSIP / SCIENCE PHOTO LIBRARY JACOPIN / BSIP / SCIENCE PHOTO LIBRARY
Not for use in school textbooks.
Illustration of transcription. The DNA double helix unwinds, an mRNA strand (messenger) forms from part of one of the DNA strands (an assembly of nucleotides) by way of an enzyme, the RNA polymerase (green oval). The genetic code is transcribed.
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