The removal of introns from RNA occurs during the process of RNA splicing, which is a part of post-transcriptional regulation in eukaryotic cells. After the transcription of a gene, the primary RNA transcript (pre-mRNA) contains both introns (non-coding regions) and exons (coding regions). During splicing, the introns are removed, and the exons are joined together to form the mature mRNA, which can then be translated into a protein. This process occurs in the nucleus before the mature mRNA is exported to the cytoplasm for translation.
the removal of sections of RNA, called introns, occur at which regulation step in eukaryotic cells
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