Genome-wide regulatory adaptation shapes population-level genomic landscapes in Heliconius

cis-regulatory evolution is an important engine of organismal diversification. While recent studies have looked at genomic patterns of regulatory evolution between species, we still have a poor understanding of the magnitude and nature of regulatory variation within species. Here we examine the evolution of regulatory element activity over wing development in three Heliconius erato butterfly populations to determine how regulatory variation is associated with population structure.