Eukaryotic pre-mRNA processing | RNA splicing (article) | Khan Academy 1 of 2 https://www.khanacademy.org/science/biology/gene-expression-central-... 5/29/2019, 6:27 PM Eukaryotic pre-mRNA processing | RNA splicing (article) | Khan Academy 2 of 2 https://www.khanacademy.org/science/biology/gene-expression-central-... 5/29/2019, 6:27 PM