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Splicing systems1. Involves spliceosomes2. Self-splicing introns3. Endonuclease and ligase arerequired (i.e. Yeast t<strong>RNA</strong>)Figure 24.2 <strong>RNA</strong> is modified in the nucleus by additions to the 5 and 3ends and by splicing to remove the introns. The splicing event requiresbreakage of the exon-intron junctions and joining of the ends of theexons. Mature m<strong>RNA</strong> is transported through nuclear pores to thecytoplasm, where it is translated.B-4
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