Apparently, repeated sequences have a function:
As a case in point, consider an article released by New Scientist in July of last year. The writer, Michael Marshall, explains that the “new, more complete version of the human genome” that was released in May of 2021 “has uncovered enormous amounts of genetic variation between people that we couldn’t detect before…. Other studies have suggested that the new genome will finally reveal the functions of seemingly useless, repetitive sequences of ‘Junk DNA.’” Marshall explains that previous technology that was used to sequence the human genome made scientists “blind” to the fact that such sequences are, in fact, useful. After studying sections of the sequence that have DNA that repeat “over and over without interruption,” geneticist of the University of Connecticut Rachel O’Neill said, “Most surprising is the number of repeats and the types of complex repeats…. They’re not just random repeated sequences, they have structure, and that structure can impact the organization of our genome.” Marshall explains, “Many geneticists have long argued that much of this repetitive DNA has no function and is ‘junk.’ However, some parts do seem to play roles—for instance, in regulating the activity of genes.”Jeff Miller, “More Evidence that the “Junk” DNA Argument is Junk” at Apologetics Press (February 7, 2022)
The New Scientist article is Michael Marshall (2021), “Full Human Genome Put to Work,” New Scientist, 251:12. A subscription is required.
You may also wish to read: At Scientific American: Salamander “junk DNA” challenges long-held view of evolution. Douglas Fox at SciAm: The salamanders would be on death’s door if they were human. “Everything about having a large genome is costly,” Wake told me in 2020. Yet salamanders have survived for 200 million years. “So there must be some benefit,” he said. The hunt for those benefits has led to some heretical surprises, potentially turning our understanding of evolution on its head.