The genus Rhoadsia is endemic to western Ecuador and northern Peru and includes two described species that differ in body form, size, and the elevations at which they occur. Unfortunately, there is ...

Demographic parameters and population growth rates vary among populations of the same species. Such variation can be extensive, as shown by a comparison of nine published studies of black-legged ...

A new study shows that facial differences resulting from population divergence in first Americans is due to the complex interaction of environment and evolution on these populations and sheds light on ...

Recombination serves as a pivotal force propelling the evolution of genomic diversity in sexually reproducing organisms. Despite its fundamental role, the evolutionary dynamics of recombination rates ...

Variations in health care exist across demographic groups, geographic regions, institutions, and even individual health care providers within a single institution. These variations are a result of a ...

Preoperative F-18 Fluorodeoxyglucose-Positron Emission Tomography Maximal Standardized Uptake Value Predicts Survival After Lung Cancer Resection A population-based random sample of newly diagnosed ...

Disease and health are the result of a complex interaction between humans and their pathogens. Genetic factors that partly determine host defenses sometimes differ significantly between people and ...