RNA Splicing: Why 97% of Your DNA Gets Deleted Before Making Proteins

Your DNA makes proteins, but 97% of the original transcript gets CUT OUT first. This is RNA splicing—the process where introns (junk sections) get removed and exons (the important parts) get stitched together. But here's the game-changer: alternative splicing lets ONE gene make thousands of different proteins. The Dscam gene in fruit flies makes 38,000 different proteins from a single gene. This is why humans have ~20,000 genes but over 100,000 proteins. RNA splicing is the molecular editing system that makes genetic complexity possible.

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