Background After three decades of research aimed at recovering DNA from preserved
remains, the field of ancient DNA is moving rapidly toward the sequencing and analysis of …

Humans now play a major role in altering Earth and its biota. Finding ways to ameliorate
human impacts on biodiversity and to sustain and restore the ecosystem services on which …

Horse domestication revolutionized warfare and accelerated travel, trade, and the
geographic expansion of languages. Here, we present the largest DNA time series for a non …

The genomic changes underlying both early and late stages of horse domestication remain
largely unknown. We examined the genomes of 14 early domestic horses from the Bronze …

Inter-species hybridization has been recently recognized as potentially common in wild
animals, but the extent to which it shapes modern genomes is still poorly understood …

The domestication of the horse∼ 5.5 kya and the emergence of mounted riding, chariotry,
and cavalry dramatically transformed human civilization. However, the genetics underlying …

Polar bears are uniquely adapted to life in the High Arctic and have undergone drastic
physiological changes in response to Arctic climates and a hyperlipid diet of primarily …

The processes leading up to species extinctions are typically characterized by prolonged
declines in population size and geographic distribution, followed by a phase in which …

Summary Przewalski's horses (PHs, Equus ferus ssp. przewalskii) were discovered in the
Asian steppes in the 1870s and represent the last remaining true wild horses. PHs became …

Bears are iconic mammals with a complex evolutionary history. Natural bear hybrids and
studies of few nuclear genes indicate that gene flow among bears may be more common …