During gene expression, when DNA is being transcribed into RNA, the non-coding sections are removed in a process called RNA splicing.
- RNA splicing is a process by which non-coding gene regions called introns are removed from the precursor messenger RNA (pre-mRNA), whereas coding gene regions called exons are spliced together.
- The spliceosome is a macromolecular complex that catalyzes the removal of introns from the pre-mRNA.
- This process (RNA splicing) helps to create many functional mature mRNAs from a single primary transcript.
In conclusion, during gene expression, when DNA is being transcribed into RNA, the non-coding sections are removed in a process called RNA splicing.
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