121 WTF Elon? – "I am convinced that synthetic mRNA is the surest path to curing cancer, among other things." (media.scored.co) posted 16 hours ago by EnoughGunControl 16 hours ago by EnoughGunControl +124 / -3 91 comments share 91 comments share save hide report block hide replies
That textbook is out of date. Most of the "junk" DNA is actually immune response markers, parts of pathogen DNA stored in order to recognize them again later. It is genetic memory for the immune system.