https://www.live-feeds.com/feed/ancient-viral-dna-offers-clues-to-why-human-and-chimpanzee-brains-evolved-differentlyContinuously updated, source-cited coverage. https://www.live-feeds.com/feed/ancient-viral-dna-offers-clues-to-why-human-and-chimpanzee-brains-evolved-differentlyhttps://www.live-feeds.com/feed/ancient-viral-dna-offers-clues-to-why-human-and-chimpanzee-brains-evolved-differently#u161309Thu, 29 Oct 2026 08:02:35 +0000An ancient viral infection from millions of years ago left genetic leftovers in primate DNA that may explain why human and chimpanzee brains evolved differently. Researchers at Lund University in Sweden discovered that a viral DNA sequence integrated into chimpanzee genomes switches off a gene that remains active during early human brain development. This tiny genetic tweak might have prevented chimpanzees from developing brains like ours, offering a new piece of the puzzle regarding the evolutionary divergence of the two species.Why it mattersScientists have long sought the genetic drivers be