The transcribed pre-mRNA contains untranslated regions at both ends which contain a ribosome binding site, terminator and start and stop codons. In addition, most eukaryotic open reading frames contain untranslated introns which are removed before the exons are translated. The sequences at the ends of the introns, dictate the splice sites to generate the final mature mRNA which encodes the protein or RNA product. COUNT 5
QSN1 What is at both ends of the transcribed pre-mRNA? ANS1 untranslated regions QSN2 Where are the ribosome binding site, terminator and start and stop codons located on transcribed pre-mRNA? ANS2 untranslated regions QSN3 What do most eukaryotic open reading frames contain? ANS3 untranslated introns QSN4 What dictates the splice sites to generate the final mature mRNA? ANS4 The sequences at the ends of the introns QSN5 What encodes the protein or RNA product? ANS5 the splice sites to generate the final mature mRNA