Researchers have discovered a gene that drives color differences within a species of bumble bees. This discovery helps to explain the highly diverse color patterns among bumble bee species as well as how mimicry—individuals in an area adopting similar color patterns—evolves. A study describing the gene, which occurs in a highly conserved region of the genome that provides blueprints for segmentation, was led by researchers at Penn State and appears April 29, 2019, in the journal Proceedings of the National Academy of Sciences.