Biology / Unit 6 Bio 1277 short lesson, about 20 seconds
Splicing and the Spliceosome
Captions available
The idea
Splicing removes a pre-mRNA's introns and joins its exons together, carried out by a large RNA-protein complex called the spliceosome.
In practice
The spliceosome recognizes each intron's boundary sequences, cuts the intron out, and ligates the flanking exons directly together.
Where people slip
Splicing acts only on introns identified by specific boundary sequences — it does not remove any exon sequence in the process.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Something wrong in this lesson? Flag it · Sources for Biology