The metaphor of 'genomic islands of speciation'was first used to describe heterogeneous
differentiation among loci between the genomes of closely related species. The biological …

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

Understanding why some evolutionary lineages generate exceptionally high species
diversity is an important goal in evolutionary biology. Haplochromine cichlid fishes of Africa's …

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 …

Species can be defined as populations that are diagnosably distinct, reproductively isolated,
cohesive, or exclusive groups of organisms. Boundaries between species in sympatry are …

Hybridisation and introgression can dramatically alter the relationships among groups of
species, leading to phylogenetic discordance across the genome and between populations …

Hybridization has played an important role in the evolution of many lineages. With the
growing availability of genomic tools and advancements in genomic analyses, it is becoming …

Abstract Approximately 2–4% of genetic material in human populations outside Africa is
derived from Neanderthals who interbred with anatomically modern humans. Recent studies …

Several methods have been proposed to test for introgression across genomes. One method
tests for a genome-wide excess of shared derived alleles between taxa using Patterson's D …

Most speciation events probably occur gradually, without complete and immediate
reproductive isolation, but the full extent of gene flow between diverging species has rarely …