Results 61 to 70 of about 11,541,343 (347)
Selection and gene flow shape genomic islands that control floral guides
Proceedings of the National Academy of Sciences of the United States of America, 2018 Significance Populations often show “islands of divergence” in the genome. Analysis of divergence between subspecies of Antirrhinum that differ in flower color patterns shows that sharp peaks in relative divergence occur at two causal loci. The island is
Hugo Tavares +14 more
semanticscholar +1 more source
Stochastic epigenetic dynamics of gene switching [PDF]
Phys. Rev. E 102, 042408 (2020), 2020 Epigenetic modifications of histones crucially affect the eukaryotic gene activity, while the epigenetic histone state is largely determined by the binding of specific factors such as the transcription factors (TFs) to DNA. Here, the way how the TFs and the histone state are dynamically correlated is not obvious when the TF synthesis is regulated by ...
arxiv +1 more source
Ecology and Evolution, 2020 Understanding the geographic extent and connectivity of wildlife populations can provide important insights into the management of disease outbreaks but defining patterns of population structure is difficult for widely distributed species.
William L. Miller +3 more
doaj +1 more source
GENE FLOW AND SELECTION IN A CLINE [PDF]
Genetics, 1973 ABSTRACT A model of the effect of gene flow and natural selection in a continuously distributed, infinite population is developed. Different patterns of spatial variation in selective pressures are considered, including a step change in the environment, a "pocket" in the environment and a periodically varying environment.
openaire +3 more sources
Inteins as indicators of gene flow in the halobacteria [PDF]
Frontiers in Microbiology, 2014 This research uses inteins, a type of mobile genetic element, to infer patterns of gene transfer within the Halobacteria. We surveyed 118 genomes representing 26 genera of Halobacteria for intein sequences. We then used the presence-absence profile, sequence similarity and phylogenies from the inteins recovered to explore how intein distribution can ...
Matthew S. Fullmer +3 more
openaire +4 more sources
The evolutionary history of bears is characterized by gene flow across species
Scientific Reports, 2017 Bears are iconic mammals with a complex evolutionary history. Natural bear hybrids and studies of few nuclear genes indicate that gene flow among bears may be more common than expected and not limited to polar and brown bears.
Vikas Kumar +6 more
semanticscholar +1 more source
Maintenance of Sympatric and Allopatric Populations in Free-Living Terrestrial Bacteria
mBio, 2019 For free-living bacteria and archaea, the equivalent of the biological species concept does not exist, creating several obstacles to the study of the processes contributing to microbial diversification.
Alexander B. Chase +5 more
doaj +1 more source
Frontiers in Plant Science, 2020 Flower color polymorphism, an infrequent but phylogenetically widespread condition in plants, is captivating because it can only be maintained under a few selective regimes but also because it can drive intra-morph assortative mating and promote ...
Francisco J. Jiménez-López +3 more
doaj +1 more source
Rules of Plant Species Ranges: Applications for Conservation Strategies
Frontiers in Ecology and Evolution, 2021 Earth is changing rapidly and so are many plant species’ ranges. Here, we synthesize eco-evolutionary patterns found in plant range studies and how knowledge of species ranges can inform our understanding of species conservation in the face of global ...
Jackie E. Shay +6 more
doaj +1 more source
Genetic diversity and population structure of endangered rosewood from the Peruvian Amazon using ISSR markers [PDF]
Acta Amazonica, 2020 Rosewood, Aniba rosaeodora is an endangered species in Amazon forests and its natural stands have been heavily depleted due to over-exploitation for the cosmetic industry.
Stalin Juan Vasquez GUIZADO +10 more
doaj +2 more sources