Results 41 to 50 of about 42,013 (168)
Genetic Incompatibilities Between Mitochondria and Nuclear Genes: Effect on Gene Flow and Speciation
Frontiers in Genetics, 2019 The process of speciation is, according to the biological species concept, the reduction in gene flow between genetically diverging populations. Most of the previous theoretical studies analyzed the effect of nuclear genetic incompatibilities on gene ...
Arndt Telschow +3 more
doaj +1 more source
The Ecological Genetics of Homoploid Hybrid Speciation [PDF]
Journal of Heredity, 2004 Our understanding of homoploid hybrid speciation has advanced substantially since this mechanism of species formation was codified 50 years ago. Early theory and research focused almost exclusively on the importance of chromosomal rearrangements, but it later became evident that natural selection, specifically ecological selection, might play a major ...
B L, Gross, L H, Rieseberg
openaire +2 more sources
Patterns of gene flow define species of thermophilic Archaea.
PLoS Biology, 2012 Despite a growing appreciation of their vast diversity in nature, mechanisms of speciation are poorly understood in Bacteria and Archaea. Here we use high-throughput genome sequencing to identify ongoing speciation in the thermoacidophilic Archaeon ...
Hinsby Cadillo-Quiroz +7 more
doaj +1 more source
The hidden diversity of the potato cyst nematode Globodera pallida in the south of Peru
Evolutionary Applications, 2020 Our knowledge of the diversity of potato cyst nematodes in their native areas still remains patchy and should be improved. A previous study based on 42 Peruvian Globodera pallida populations revealed a clear south to north phylogeographic pattern, with ...
Romain Thevenoux +5 more
doaj +1 more source
Ecological speciation in the tropics: Insights from comparative genetic studies in Amazonia
Frontiers in Genetics, 2015 Evolution creates and sustains biodiversity via adaptive changes in ecologically relevant traits. Ecologically mediated selection contributes to genetic divergence both in the presence or absence of geographic isolation between populations, and is ...
Luciano B Beheregaray +4 more
doaj +1 more source
Molecular genetics of speciation and human origins. [PDF]
Proceedings of the National Academy of Sciences, 1994 The major histocompatibility complex (MHC) plays a cardinal role in the defense of vertebrates against parasites and other pathogens. In some genes there are extensive and ancient polymorphisms that have passed from ancestral to descendant species and are shared among contemporary species.
AYALA, FJ +3 more
openaire +5 more sources
A Genome-wide hybrid incompatibility landscape between Caenorhabditis briggsae and C. nigoni. [PDF]
PLoS Genetics, 2015 Systematic characterization of ẖybrid incompatibility (HI) between related species remains the key to understanding speciation. The genetic basis of HI has been intensively studied in Drosophila species, but remains largely unknown in other species ...
Yu Bi +5 more
doaj +1 more source
Reproductive isolation arises during laboratory adaptation to a novel hot environment
Genome BiologyBackground Reproductive isolation can result from adaptive processes (e.g., ecological speciation and mutation-order speciation) or stochastic processes such as “system drift” model.
Sheng-Kai Hsu +6 more
doaj +1 more source
Communications Biology, 2022 Phylogenetic and population genetic analyses reveal mechanisms of pollinator sharing, copollination and speciation by host-shift in fig-wasp mutualism.
Zhi-Hui Su +6 more
doaj +1 more source
Metabolic rate and climatic fluctuations shape continental wide pattern of genetic divergence and biodiversity in fishes. [PDF]
PLoS ONE, 2013 Taxonomically exhaustive and continent wide patterns of genetic divergence within and between species have rarely been described and the underlying evolutionary causes shaping biodiversity distribution remain contentious.
Julien April +3 more
doaj +1 more source