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pre-mRNAplugin-autotooltip__default plugin-autotooltip_bigpre-mRNA: In eukaryotes, genes are transcribed as a longer RNA molecule called pre-mRNA, which is then processed via splicing, 5'-capping, and 3' polyadenylation before it is transported into the cytoplasm and becomes a mature mRNA.: In eukaryotesplugin-autotooltip__default plugin-autotooltip_bigeukaryote: organism whose cells have membrane bound organelles, including the nucleus., genesplugin-autotooltip__default plugin-autotooltip_bigGene: read Chapters 02, 03, 04, 05, and 06 for a definition of gene :-) are transcribedplugin-autotooltip__default plugin-autotooltip_bigRNA transcription: the process of RNA polymerase using the DNA sequence of a gene as a template to form an mRNA (in prokaryotes) or pre-mRNA (in eukaryotes). In most cases, “transcription” implies RNA transcription. as a longer RNA molecule called pre-mRNA, which is then processed via splicingplugin-autotooltip__default plugin-autotooltip_bigIntron splicing: the act of remove introns and joining exons from pre-mRNA to form an mRNA. This occurs in the nucleus of eukaryotic cells and is catalyzed by an enzyme called the spliceosome., 5'-capping, and 3'polyadenylation before it is transported into the cytoplasm and becomes a mature mRNAplugin-autotooltip__default plugin-autotooltip_bigmessenger RNA (mRNA): an RNA molecule that codes for protein..