 The more recent advent of DNA sequencing initiated the growth of molecular phylogenetics and molecular ecology. The new technology added not only a new phenotype, but also a more pronounced historical (phylogenetic) dimension to ecological genetic research. Molecular phylogenics and comparative sequence analysis have become the primary modern tools for the investigation of the evolutionary patterns and processes that shape DNA sequences. These methods have strengthened inferences regarding biogeography, speciation, and adaptation, especially in regard to the diversification of taxonomic lineages that attends ecological release and adaptive radiations. They have shifted the focus from polymorphism within species to diversification among clades (e.g., Kostyun et al. 2019) and permitted the investigation of the history of individual genes (Gibson et al. 2020  [Other Internet Resources]).  For example, ecological genomic data have permitted the reconstruction of the invasion of the Galapagos Islands by the wild tomato species, Solanum pimpinellifolium, through hybridization and introgression with a closely related endemic species, Solanum cheesmaniae. Moreover, an adaptive phenotype, orange fruit color similar to the endemic species, is associated with two introgressed regions of the Solanum genome which contain known fruit color loci, supporting the inference that adaptive convergence was genetically facilitated by introgression (Gibson et al. 2020  [Other Internet Resources]).