The unexpected discovery of a new type of genetic variation suggests that natural selection -- the force that drives evolution -- is both more powerful and more complex than scientists have thought.

Strong competition for mates triggers dramatic changes in beetles, offering rare insight into the early stages of species ...

Human genetic diversity is the result of population genetic forces. This genetic variation influences disease risk and contributes to health disparities. Autoimmune diseases (ADs) are a family of ...

Population genetics can be applied to investigate how natural selection has shaped the variability of innate immunity genes in the human population, providing an indispensable complement to ...

Pairs of experimental populations of Drosophila pseudoobscura are subjected to selection for positive or for negative geotaxis. In each pair of populations, one is derived in every generation from 25 ...

Vol. 171, No. 9, Special Issue Natural Selection in Plants Edited by Jeffrey Conner (November 2010), pp. 1059-1071 (13 pages) Natural selection shapes patterns of genetic variation among individuals, ...

The passenger pigeon is famous for the enormous size of its historical population and for its rapid extinction in the face of mass slaughter by humans. Yet it remains a mystery why the species wasn't ...

T. Hofer, N. Ray, D. Wegmann, L. Excoffier (2009). Large allele frequency differences between human continental groups are more likely to have occurred by drift during range expansions than by ...