The repeated adaptation of oceanic threespine sticklebacks to fresh water has made it a
premier organism to study parallel evolution. These small fish have multiple distinct …

Local adaptation leads to differences between populations within a species. In many
systems, similar environmental contrasts occur repeatedly, sometimes driving parallel …

Similar forms often evolve repeatedly in nature, raising long-standing questions about the
underlying mechanisms. Here, we use repeated evolution in stickleback to identify a large …

We lack a thorough understanding of the origin and maintenance of standing genetic
variation that enables rapid evolutionary responses of natural populations. Whole genome …

Population genetic theory predicts that small effective population sizes (N e) and restricted
gene flow limit the potential for local adaptation. In particular, the probability of evolving …

As a genetic mutation is passed down across generations, it distinguishes those genomes
that have inherited it from those that have not, providing a glimpse of the genealogical tree …

Adaptation is typically studied by comparing modern populations with contrasting
environments. Individuals persisting in the ancestral habitat are typically used to represent …

Hydrogen sulfide is a toxic gas that disrupts numerous biological processes, including
energy production in the mitochondria, yet fish in the Poecilia mexicana species complex …

Many species are facing unprecedented population size declines and deterioration of their
environment. This exposes species to genomic erosion, which we define here as the …

Abstract The Journal of Human Evolution (JHE) was founded 50 years ago when much of
the foundation for how we think about human evolution was in place or being put in place …