How the lepidoptera got its spots
By tweaking just one or two genes, Cornell researchers have altered the patterns on a butterfly’s wings. It’s not just a new art form, but a major clue to understanding how the butterflies have evolved, and perhaps to how color patterns – and other patterns and shapes – have evolved in other species.The genes in question are especially interesting because they have been “co-opted” – they previously did some other job at a different place in the development process.