Alleles that introgress between species can influence the evolutionary and ecological fate of
species exposed to novel environments. Hybrid offspring of different species are often unfit …

Research into Heliconius butterflies has made a significant contribution to evolutionary
biology. Here, we review our understanding of the diversification of these butterflies …

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

Müllerian mimicry among Neotropical Heliconiini butterflies is an excellent example of
natural selection, associated with the diversification of a large continental-scale radiation …

The study of genetic exchange resulting from natural hybridization, horizontal gene transfer,
and viral recombination has long been marked by controversy between researchers holding …

Hybrid zones can be valuable tools for studying evolution and identifying genomic regions
responsible for adaptive divergence and underlying phenotypic variation. Hybrid zones …

Wing-pattern mimicry in butterflies has provided an important example of adaptation since
Charles Darwin and Alfred Russell Wallace proposed evolution by natural selection> 150 …

The process by which species evolve can be illuminated by investigating barriers that limit
gene flow between taxa. Recent radiations, such as Heliconius butterflies, offer the …

Species coexistence involves the evolution of reproductive barriers opposing gene flow.
Heliconius butterflies display colorful patterns affecting mate choice and survival through …

Hybridization has become a central element in theories of animal evolution during the last
decade. New methods in population genomics and statistical model testing now allow the …