Question

organize the steps of pre - rna splicing from the initiation of transcription to the export and translation of mrna. transcription initiated transcription completed spliceosome assembly begins 5 splice site cleavage lariat formation 3 splice site cleavage exon ligation exportation of mature mrna

Explanation:

This sequence follows the natural cellular process starting with transcription, pre-mRNA splicing via spliceosome action, and ending with mRNA export. Transcription first initiates and finishes to produce pre-mRNA. The spliceosome then assembles on the pre-mRNA, cleaves the 5' splice site, forms a lariat structure from the intron, cleaves the 3' splice site, ligates the exons to make mature mRNA, which is then exported for translation.

Answer:

1. transcription initiated
2. transcription completed
3. spliceosome assembly begins
4. 5' splice site cleavage
5. lariat formation
6. 3' splice site cleavage
7. exon ligation
8. exportation of mature mRNA
9. translation of mRNA