When the spliceosome binds to a pre-mRNA transcript, where does it typically attach?

Question

Quizplus · Accepted Answer

The spliceosome typically attaches at certain sequences along an intron, including the 5' splice site, 3' splice site, and branch point sequence. These sequences are recognized by RNA-binding proteins within the spliceosome, which facilitate the intron removal and exon joining process. The exons themselves are already spliced together in the pre-mRNA transcript, and the 5' and 3' UTRs are not involved in splicing.

When the Spliceosome Binds to a Pre-MRNA Transcript, Where Does