BIOL 1020 Lecture 31: BIOL 1020

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1020
• Professor: Michael P.Shaw

Document Summary

Eukaryotic cells modify rna after transcription: enzymes in the eukaryotic nucles modify pre-mrna before the genetic messages are dispatched to the cytoplasm, some interior parts of the molecule are cut out, and the other parts spliced together. The functional and evolutionary important of introns: some genes can encode more than one kind of polypeptide, depending on which segments are treated as exons during rna splicing, such variations are called alternative rna splicing. Molecular components of translation: a cell translates an mrna message into protein with the help of transfer. Rna (trna: moleules of trna are not identical, each carries a specific amino acid on one end and an anticodon on the other end; the anticodon base-pairs with a complementary codon on mrna.