Overview rRNA ribosomal rRNA + protein = ribosome most abundant of all RNA types clinical importance login to view 2 more bullets tRNA transfer covalently attached to amino acids provides link between genetic code and a particular amino acid mRNA messenger carries DNA message from chromosome to translation by ribosome hnRNA or pre-mRNA heteronuclear present only in eukaryotes mRNA transcript prior to splicing login to view 1 more bullet snRNA small nuclear present only in eukaryotes functions in splicing of mRNA in the nucleus Ribozymes present in eukaryotes and prokaryotes have intrinsic enzymatic activity miRNA micro ↓ translation by binding to 3'-UTR of target mRNA login to view 1 more bullet uses Dicer and RISC enzymes in processing often coded for in intron segments RNAi is a synthetic lab technique that takes advantage of miRNA pathway login to view 1 more bullet