Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Splicing is the process where introns (non-coding regions) are removed from pre-mRNA and exons (coding regions) are joined together to form mature mRNA ready for translation.
A regulated process during gene expression that results in a single gene coding for multiple proteins by selectively including or excluding certain exons.
Pre-mRNA: It's an immature single strand of messenger ribonucleic acid. Pre-mRNA is synthesized from a DNA template in the cell nucleus by transcription.
mRNA Processing: The modifications that a primary RNA transcript undergoes before it becomes mature mRNA.