Browse our latest Evolutionary Biology articles

A new taxon from the Late Jurassic of southern Germany represents the second volant bird known from that time period and documents the improvement of flapping flight in bird evolution.

Environmental heterogeneity can dramatically reduce the efficacy of selection and alter the neutral evolutionary dynamics in microbial range expansions.

In richer, more even communities, foragers form broad categories among their food resources that can select for convergence among signals, including mimetic resemblances.

A history of coevolution increases genetic variation in the susceptibility of Drosophila to viruses, largely by introducing major-effect resistance polymorphisms into populations.

The most recent common ancestor of humans, chimpanzees, and bonobos possessed a foot adapted to terrestrial quadrupedalism and climbing.

Empathy can evolve and foster cooperation in a game-theoretic analysis of behavior.

When an individual makes a judgement about the actions of another individual, taking the latter's viewpoint into consideration enhances cooperation in society at large.

A 99-million year old beetle in amber was a myrmecophile—a social impostor of the earliest-known ant colonies—revealing the most ancient behavioral symbiosis yet discovered in the Metazoa.

Quantitative genetics approaches using Caenorhabditis elegans facilitate the discovery of a novel arsenic toxicity mechanism.

Diverse sophisticated phylogenetic analyses update the phylogeny of the Alphaproteobacteria and show that the parasitic Holosporales is a derived group within the Rhodospirillales order which comprises primarily free-living alphaproteobacteria.