Introgression is emerging as an important source of novel genetic variation, alongside
standing variation and mutation. It is adaptive when such introgressed alleles are …

Phylogenomics has revealed the remarkable frequency with which introgression occurs
across the tree of life. These discoveries have been enabled by the rapid growth of methods …

We used 20 de novo genome assemblies to probe the speciation history and architecture of
gene flow in rapidly radiating Heliconius butterflies. Our tests to distinguish incomplete …

Introgression can be an important source of new alleles for adaption under rapidly changing
environments, perhaps even more important than standing variation. Though introgression …

Snowshoe hares (Lepus americanus) maintain seasonal camouflage by molting to a white
winter coat, but some hares remain brown during the winter in regions with low snow cover …

Understanding the history and philosophy of biological systematics (phylogenetics,
taxonomy and classification of living things) is key to successful practice of the discipline. In …

Supergenes are groups of tightly linked loci whose variation is inherited as a single
Mendelian locus and are a common genetic architecture for complex traits under balancing …

Oakleaf butterflies in the genus Kallima have a polymorphic wing phenotype, enabling these
insects to masquerade as dead leaves. This iconic example of protective resemblance …

Within the mega-pest lineage of heliothine moths are a number of polyphagous, highly
mobile species for which the exchange of adaptive traits through hybridization would affect …

Detailed evaluations of genomic variation between sister species often reveal distinct
chromosomal regions of high relative differentiation (ie,“islands of differentiation” in FST), but …