Alleles that introgress between species can influence the evolutionary and ecological fate of
species exposed to novel environments. Hybrid offspring of different species are often unfit …

Speciation, the evolution of reproductive isolation among populations, is continuous,
complex, and involves multiple, interacting barriers. Until it is complete, the effects of this …

Human epithelial tissues accumulate cancer-driver mutations with age,,,,,,,–, yet tumour
formation remains rare. The positive selection of these mutations suggests that they alter the …

The rediscovery of Mendel's work showing that the heredity of phenotypes is controlled by
discrete genes was followed by the reconciliation of Mendelian genetics with evolution by …

In recent years, scientists have realized that evolution can occur on timescales much shorter
than the" long lapse of ages" emphasized by Darwin—in fact, evolutionary change is …

It is increasingly important to improve our understanding of the genetic basis of local
adaptation because of its relevance to climate change, crop and animal production, and …

Major global crops in high-yielding, temperate cropping regions are facing increasing
threats from the impact of climate change, particularly from drought and heat at critical …

Speciation is a fundamental evolutionary process, the knowledge of which is crucial for
understanding the origins of biodiversity. Genomic approaches are an increasingly …

The evolution of phenotypic similarities between species, known as convergence, illustrates
that populations can respond predictably to ecological challenges. Convergence often …

Evolutionary responses are required for tree populations to be able to track climate change.
Results of 250 years of common garden experiments show that most forest trees have …