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675 results for “Introgression”
Data from: Species diversification in the sky islands of southwestern China revealed by genomic, introgression and demographic analyses of Asian shrew moles
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Data from: Differential introgression of a female competitive trait in a hybrid zone between sex-role reversed species
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Data from: Late Pleistocene range expansion of North American topminnows accompanied by admixture and introgression.
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3RAD datasets used for phylogenomic, species delimitation, biogeography, and introgression analyses on Dugesia from Corsica and Sardinia
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Ecological speciation by sympatric host shifts in a clade of herbivorous sea slugs, with introgression and localized mitochondrial capture between species
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Phylogenomic analyses highlight innovation and introgression in the continental radiations of Fagaceae across the Northern Hemisphere
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Data for: Echoes of ancient introgression punctuate stable genomic lineages in the evolution of figs
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Data from: The genomic impact of historical hybridization with massive mitochondrial DNA introgression
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Ancient introgression in mouse lemurs (Microcebus:Cheirogaleidae) explains 20 years of phylogenetic uncertainty
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Genomic data reveal a North-South split and introgression history of blood fluke populations across Africa
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Tracking invasions of a destructive defoliator, the gypsy moth (Erebidae: Lymantria dispar): population structure, origin of intercepted specimens, and Asian introgression into North America
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Introgression between highly divergent fungal sister species
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Pre-introduction introgression contributes to parallel differentiation and contrasting hybridisation outcomes between invasive and native marine mussels
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Archived data for: Balancing selection, genetic drift, and human mediated-introgression interplay to shape MHC (functional) diversity in Mediterranean brown trout
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Data for paper: The making of a genetic cline: introgression of oceanic genes into coastal cod populations in the North East Atlantic
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Detection of ghost introgression requires exploiting topological and branch length information
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Extensive introgression among strongylocentrotid sea urchins revealed by phylogenomics
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Data from: VolcanoFinder: genomic scans for adaptive introgression
<p>Recent research shows that introgression between closely-related species is an important source of adaptive alleles for a wide range of taxa. Typically, detection of adaptive introgression from genomic data relies on comparative analyses that require sequence data from both the recipient and the donor species. However, in many cases, the donor is unknown or the data is not currently available. Here, we introduce a genome-scan method---VolcanoFinder---to detect recent events of adaptive introgression using polymorphism data from the recipient species only. VolcanoFinder detects adaptive introgression sweeps from the pattern of excess intermediate-frequency polymorphism they produce in the flanking region of the genome, a pattern which appears as a volcano-shape in pairwise genetic diversity. Using coalescent theory, we derive analytical predictions for these patterns. Based on these results, we develop a composite-likelihood test to detect signatures of adaptive introgression relative to the genomic background. Simulation results show that VolcanoFinder has high statistical power to detect these signatures, even for older sweeps and for soft sweeps initiated by multiple migrant haplotypes. Finally, we implement VolcanoFinder to detect archaic introgression in European and sub-Saharan African human populations, and uncovered interesting candidates in both populations, such as TSHR in Europeans and TCHH-RPTN in Africans. We discuss their biological implications and provide guidelines for identifying and circumventing artifactual signals during empirical applications of VolcanoFinder.</p>
Data from: Genetic introgression among differentiated clades is lower among clades exhibiting different parity modes
Mechanisms leading to sympatric speciation are diverse and may build up reproductive isolation. Reproductive isolation among differentiated clades may exist due to genetic incompatibilities, sexual selection, differences in parity mode, reduced post-zygotic survival or reproductive success of hybrids. Here we test whether differences in parity mode lead to reproductive isolation by investigating introgression in Zootoca vivipara, a lizard species exhibiting oviparous and viviparous reproduction. We measured introgression in transects spanning different viviparous clades, different oviparous subclades, transects containing oviparous and viviparous clades, and transects within the same subclade (control transects). Introgression in transects spanning oviparous and viviparous clades was one order of magnitude smaller than transects spanning the same reproductive mode and no statistical differences existed between transects spanning the same reproductive mode and contr ol transects. Among types of transects, no significant differences existed in genetic and geographic distances, nor number of detected alleles. Moreover, hybrids were detected in all types of transects, showing that parity mode alone does not necessarily lead to complete reproductive isolation, which suggests that reinforcement may play an important role. The evolution of different parity modes together with reinforcement may thus promote reproductive isolation and rapid speciation, potentially explaining why only six of the almost 40'000 vertebrates belonging to groups consisting of viviparous and oviparous species exhibit bimodal reproduction.
Data from: Mining the stable quantitative trait loci for agronomic traits in wheat (Triticum aestivum L.) based on an introgression line population
<p><span><span><b>Background</b>: Human demand for wheat will continue to increase together with the continuous global population growth. Agronomic traits in wheat are susceptible to environmental conditions. Therefore, in breeding practice, priority is given to QTLs of agronomic traits that can be stably detected across multiple environments and over many years.</span></span></p> <p><span><span><b>Results: </b>In this study, QTL analysis was conducted for eight agronomic traits using an introgression line population across eight environments (drought stressed and well-watered) for five years. In total, 44 additive QTLs for the above agronomic traits were detected on 15 chromosomes. Among these, <i>qPH-6A</i>, <i>qHD-1A</i>, <i>qSL-2A</i>, <i>qHD-2D</i> and<i> qSL-6A</i> were detected across seven, six, five, five and four environments, respectively. The means in the phenotypic variation explained by these five QTLs were 12.26%, 9.51%, 7.77%, 7.23%, and 8.49%, respectively. </span></span></p> <p><b>Conclusions: </b>We identified five stable QTLs, which includes <i>qPH-6A</i>, <i>qHD-1A</i>, <i>qSL-2A</i>, <i>qHD-2D</i> and<i> qSL-6A</i>. They play a critical role in wheat agronomic traits. One of the dwarf genes<i> Rht14</i>, <i>Rht16</i>, <i>Rht18</i> and <i>Rht25</i> on chromosome 6A might be the candidate gene for <i>qPH-6A</i>. The <i>qHD-1A</i> and <i>qHD-2D</i> were novel stable QTLs for heading date and they differed from known vernalization genes, photoperiod genes and earliness per se genes.</p>
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.