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geniice t1_j63z5bv wrote

> Roughly 10% of the human genome consists of about a million scattered copies of a single 286-base sequence (or "sentence") of this "junk DNA" called "Alu." It's the genomic equivalent of meaningless SPAM, repeated endlessly...

At least some of it controls gene expression. Beyond that the fact its highly conserved in primates suggests it does something.

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