Meeting the food needs of Africa’s growing population over the next half-century will require technologies that significantly improve rural livelihoods...
During replication, RNA viruses rapidly generate diverse mutant progeny which differ in their ability to kill host cells. We report...
There are many striking examples of phenotypic convergence in nature, in some cases associated with changes in the same genes....
The development of distinct regions in the amniote vertebral column results from somite formation and Hox gene expression, with the...
Mutualistic interactions are taxonomically and functionally diverse. Despite their ubiquity, however, the basic ecological and evolutionary processes underlying their origin...
Bridging broken DNA ends via nonhomologous end-joining (NHEJ) contributes to the evolution and stability of eukaryote genomes. Although some bacteria...
The genealogies of different genetic loci vary in depth. The deeper the genealogy, the greater the chance that it will...
Although there is an extensive amount known about specific sensory and motor functions of the vertebrate brain, less is understood...
Long-term depression (LTD) is an important synaptic mechanism for limiting excitatory influence over circuits subserving cognitive and emotional behavior. A...
A chiral porphyrazine (pz), H2[pz(trans-A2B2)] (247), has been prepared that exhibits preferential in vivo accumulation in the cells of tumors....
Neandertals differ from recent and terminal Pleistocene human populations in their patterns of dental development, endostructural (internal structure) organization, and...
The assumption that different genetic elements can make separate contributions to the same quantitative trait was originally made in order...
Plasmodium reichenowi, a chimpanzee parasite, was until very recently the only known close relative of Plasmodium falciparum, the most...
Regeneration abilities have been repeatedly lost in many animal phyla. However, because regeneration research has focused almost exclusively on highly...
A basic property of life is its capacity to experience Darwinian evolution. The replicator concept is at the core of...
Assembling the tree of life is a major goal of biology, but progress has been hindered by the difficulty and...
Cognitive functions show many alternative outcomes and great individual variation during normal aging. We examined learning over the adult life...
Control measures used to limit the spread of infectious disease often generate externalities. Vaccination for transmissible diseases can reduce the...
Evolution and its elements of natural selection, population migration, genetic drift, and founder effects have shaped the world in which...
Telomere length in humans is emerging as a biomarker of aging because its shortening is associated with aging-related diseases and...
Humans have evolved much longer lifespans than the great apes, which rarely exceed 50 years. Since 1800, lifespans have doubled...
Human offspring are weaned earlier than the offspring of other great apes but take longer to reach nutritional independence. An...
We used data from studies of copy-number variants (CNVs), single-gene associations, growth-signaling pathways, and intermediate phenotypes associated with brain growth...
RNA viruses are the main agents of emerging and re-emerging diseases. It is therefore important to reveal the evolutionary processes...
The principles governing protein evolution under strong selection are important because of the recent history of evolved resistance to insecticides,...
A model is investigated in which mutations that affect a complex trait (e.g., heart disease) also affect fitness because the...
Neo-Darwinian evolutionary theory is based on exquisite selection of phenotypes caused by small genetic variations, which is the basis of...
Gene duplications alter the genetic constitution of organisms and can be a driving force of molecular evolution in humans and...
The genetic basis of fitness traits has been studied widely in animals, yet the contribution of genetic variation to these...
There is little information on inbreeding during the critical early years of human existence. However, given the small founding group...
Our aims were to demonstrate that natural selection is operating on contemporary humans, predict future evolutionary change for specific traits...
New applications of evolutionary biology in medicine are being discovered at an accelerating rate, but few physicians have sufficient educational...