Evolution's 120-Million-Year Shortcut: Same Genes Recreate Identical Patterns

Across 120 million years and countless branching lineages, evolution has been quietly returning to the same genetic instructions to solve the same problem: how to warn a predator that you are not worth eating. A new study of butterflies and moths reveals that convergent evolution operates not merely at the level of appearance, but at the molecular level — the same genes, recruited independently, producing the same patterns in species separated by epochs. This genetic parallelism suggests that life, far from being boundlessly inventive, is also deeply conservative, favoring pathways already pro