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Evolution is the process of heritable change in populations of organisms over multiple generations. Evolutionary biology is the study of this process, which can occur through mechanisms including natural selection, sexual selection and genetic drift.
An approach to ecological interactions that integrates coevolutionary dynamics and network structure, showing that selection in mutualisms is shaped not only by the mutualistic partners but by all sorts of indirect effects from other species in the network.
Genetic accommodation is a potential mechanism for the phenotypic divergence of species. Here, Kulkarni et al. compare endocrine responses of three spadefoot toad species to pond drying and suggest how evolution of mechanisms of developmental plasticity may account for trait variation among species.
The petals of a range of flowers harbour repeated patterns of nanostructures that
show similar levels of disorder across species. This degree of disorder produces a blue
halo of scattered light that helps bees to find flowers.