The RNA processing machinery is contained inside structures called "terminal knobs" in nascent RNA transcripts. Terminal knobs are visible in this electron micrograph of chromatin spreads from yeast.
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If DNA is a book, then how is it read? Learn more about the DNA transcription process, where DNA is converted to RNA, a more portable set of instructions for the cell.
Gene expression is linked to RNA transcription, which cannot happen without RNA polymerase. However, this is where the similarities between prokaryote and eukaryote expression end.
