Polyribosomes Fig. 7.14 More than one ribosome can be involved in translation on a single mRNA molecule. In prokaryotes, translation begins while mRNA molecule is still being synthesized. Eukaryotic mRNAs contain non-coding regions (introns) that must be spliced out before the mature mRNA can function in protein synthesis. Eukaryotic DNA introns. which interrupt coding regions. Transcription generates precursor mRNA 1ha1 contains introns. Splicing removes introns to torm mRNA that is transported to the cytoplasm, where it will be translated. Fig. 7.16
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