My research addresses functional genomic, quantitative genetic and evolutionary questions, with a focus on the role of gene regulation. These research areas inform one another. Functional genomic studies help us understand how the links between genotype and phenotype shape variability within species and the evolution of species differences. Conversely, by studying genetic variation in complex traits within populations and in different species, we are better able to build predictive genotype to phenotype maps for these traits. I use Drosophila as a model system and a variety of transgenic and genomic experimental techniques, as well as statistical and bioinformatics analyses, are employed.