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374 results for “Selection: natural”
Data from: Sexual selection against natural hybrids may contribute to reinforcement in a house mouse hybrid zone
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Data from: Natural selection for the Duffy-null allele in the recently admixed people of Madagascar
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Data from: The roles of genetic drift and natural selection in quantitative trait divergence along an altitudinal gradient in Arabidopsis thaliana
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Data from: How populations differentiate despite gene flow: sexual and natural selection drive phenotypic divergence within a land fish, the Pacific leaping blenny
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Data from: Natural selection interacts with recombination to shape the evolution of hybrid genomes
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Heterosis counteracts hybrid breakdown to forestall speciation by parallel natural selection
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Data from: Predator-mediated natural selection on the wings of the damselfly Calopteryx splendens: differences in selection among trait types
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Dataset and scripts from: Predicting temperature mortality and selection in natural Drosophila populations
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Data from: Compensatory selection for roads over natural linear features by wolves in northern Ontario: implications for caribou conservation
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Data from: Integrating viability and fecundity selection to illuminate the adaptive nature of genetic clines
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Data from: Natural selection and the genetic basis of osmoregulation in Heteromyid rodents as revealed by RNA-seq
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Raw data from: Consumer-resource interactions along urbanization gradients drive natural selection
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Data from: Antiherbivore defenses alter natural selection on plant reproductive traits
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Data from: Divergent natural selection with gene flow along major environmental gradients in Amazonia: insights from genome scans, population genetics and phylogeography of the characin fish Triportheus albus
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Data from: Introgressive hybridization and natural selection in Darwin's finches
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Data from: Evolutionary impact of size-selective harvesting on shoaling behavior: Individual-level mechanisms and possible consequences for natural and fishing mortality
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Data from: Niche construction affects the variability and strength of natural selection
Consideration of the properties of the sources of selection potentially helps biologists to account for variation in selection. Here we explore how the variability of natural selection is affected by organisms that regulate the experienced environment through their activities (whether by constructing components of their local environments such as nests, burrows, or pupal cases, or by choosing suitable resources). Specifically, we test the prediction that organism-constructed sources of selection that buffer environmental variation will result in reduced variation in selection gradients, including reduced variation between (i) years (temporal variation), and (ii) locations (spatial variation), and (iii) weaker directional selection, relative to non-constructed sources. Using compiled datasets of 1045 temporally replicated, 257 spatially replicated, and a pooled dataset of 1230 selection gradients, we find compelling evidence for reduced temporal variation and weaker selection, in response to constructed compared to non-constructed sources, and some evidence for reduced spatial variation in selection. These findings, which remained robust to alternative datasets, taxa, analytical methods, definitions of constructed/non-constructed, and other tests of reliability, suggest that organism-manufactured or chosen components of environments may have qualitatively different properties from other environmental features.
Code and processed data accompanying "Widespread haploid-biased gene expression enables sperm-level natural selection"
<p>Code and processed data required to reproduce the analysis in "Widespread haploid-biased gene expression enables sperm-level natural selection".</p>
Data for: Natural selection on adults has trait-dependent consequences for juvenile evolution in dragonflies
<p>Although natural selection often varies across ontogeny, it remains unclear what conditions enable selection in one life-cycle stage to shape evolution in others. Organisms that undergo metamorphosis are useful for addressing this topic because, despite the dramatic life-history transition that separates their highly specialized life-cycle stages, the stages only exhibit evolutionary independence in some cases. Using a comparative study of dragonflies, we examined three conditions that are hypothesized to allow selection in one stage to affect evolution in others. First, contrary to predictions that life-cycle stages in lineages with less dramatic metamorphoses (e.g. hemimetabolous insects) do not evolve independently, we found that the evolution of larval body shape is not affected by selection on adult shape. Next, supporting the hypothesis that homologous and/or co-adapted structures do not evolve independently, selection for larger wings are associated with the evolution of a functionally co-adapted larval trait, the sheaths that store developing wing tissue. Finally, consistent with expectations of minimal stage-specific evolution in traits linked to a single biochemical pathway, species with more wing melanization have evolved weaker larval melanin immune defenses. Thus, even in organisms that undergo metamorphosis, some kinds of traits may have greater capacity for stage-specific evolution than others.</p>
Data from: Stick insect genomes reveal natural selection's role in parallel speciation
Natural selection can drive the repeated evolution of reproductive isolation, but the genomic basis of parallel speciation remains poorly understood. We analyzed whole-genome divergence between replicate pairs of stick insect populations that are adapted to different host plants and undergoing parallel speciation. We found thousands of modest-sized genomic regions of accentuated divergence between populations, most of which are unique to individual population pairs. We also detected parallel genomic divergence across population pairs involving an excess of coding genes with specific molecular functions. Regions of parallel genomic divergence in nature exhibited exceptional allele frequency changes between hosts in a field transplant experiment. The results advance understanding of biological diversification by providing convergent observational and experimental evidence for selection's role in driving repeatable genomic divergence.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
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.