I am interested in the developmental basis of pattern diversity. Heliconius butterflies display a dazzling amount of wing pattern diversity, which has afforded us a wonderful opportunity to investigate the genetics of wing patterning. Two species, H. melpomene and H. erato, mimic each other wherever they co-occur. We know that they utilize a conserved toolkit of genes to build their wing patterns, including the transcription factor Optix and the signalling factor WntA. This is a great case study for convergent evolution in a recent radiation. I want to understand how these two species have used the same genes to create very similar wing patterns.