'Junk DNA' Evolution Genomics

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.