From course:
(Practice similar questions for free)
BIOLOGY TOPIC 7 NUCLEIC ACIDS (HL)
» Start this Course(Practice similar questions for free)
Question:
What are 3 post-transcriptional modifications?
Author: Sammy UniverseAnswer:
To form mature mRNA: Capping: 5' methyl (CH3) cap added to = prevents degradation by exonucleases Polyadenylation: 3' end is polyadenylated = poly-A tail added (AAAAA = adenines) improves stability and export from nucleus Splicing: introns (non coding sequences) are removed = continuous mRNA sequence from exons Introns = INTruding sequences and Exons = EXpressing sequences
0 / 5 Â (0 ratings)
1 answer(s) in total