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374 results for “gene polymorphism”
Intraprostatic Androgenicity in Relation to Circulating Levels of Hormones and Polymorphisms of Hormone-Related Genes: A Methodologic Study
ClinicalTrials.gov study NCT00342433. IPD Sharing: Not stated. Countries: 2. Publications: 3.
Data from: Mannose-binding lectin gene polymorphisms in the East Siberia and Russian Arctic populations
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Data from: Single nucleotide polymorphisms reveal genetic structuring of the Carpathian newt and provide evidence of interspecific gene flow in the nuclear genome
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Arsenic (+3 oxidation state) methyltransferase gene polymorphisms and expression on bladder cancer
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Data from: Candidate gene polymorphisms for behavioural adaptations during urbanization in blackbirds
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Data from: Phylogenomic analyses reveal latitudinal population structure and polymorphisms in heat stress genes in the North Atlantic snail Nucella lapillus
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Candidate gene polymorphisms are linked to dispersive and migratory behaviour: searching for a mechanism behind the “paradox of the great speciators”
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Data from: Transcriptome-wide polymorphisms of red abalone (Haliotis rufescens) reveal patterns of gene flow and local adaptation
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Data from: Length polymorphisms at two candidate genes explain variation of migratory behaviors in blackpoll warblers (Setophaga striata)
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Data from: Polymorphism at the Clock gene predicts phenology of long-distance migration in birds
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Data from: Regulatory changes in pterin and carotenoid genes underlie balanced color polymorphisms in the wall lizard
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Data from: Polymorphism in the couch potato gene clines in eastern Australia but is not associated with ovarian dormancy in Drosophila melanogaster
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Supporting Data for: Differential gene expression associated with a floral scent polymorphism in the evening primrose Oenothera harringtonii (Onagraceae)
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Data from: Environmental adaptation contributes to gene polymorphism across the Arabidopsis thaliana genome
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Association of APOE gene polymorphisms with primary open angle glaucoma in Brazilian patients
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Transcriptome-wide comparisons and virulence gene polymorphisms of host-associated genotypes of the cnidarian parasite Ceratonova shasta in salmonids
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Data from: Fluorescent protein-mediated colour polymorphism in reef corals: multi-copy genes extend the adaptation/acclimatization potential to variable light environments
The genomic framework that enables corals to adjust to unfavourable conditions is crucial for coral reef survival in a rapidly changing climate. We have explored the striking intraspecific variability in the expression of coral pigments from the green fluorescent protein (GFP) family to elucidate the genomic basis for the plasticity of stress responses among reef corals. We show that multi-copy genes can greatly increase the dynamic range over which corals can modulate transcript levels in response to the light environment. Using the red fluorescent protein amilFP597 in the coral Acropora millepora as a model, we demonstrate that its expression increases with light intensity, but both the minimal and maximal gene transcript levels vary markedly among colour morphs. The pigment concentration in the tissue of different morphs is strongly correlated with the number of gene copies with a particular promoter type. These findings indicate that colour polymorphism in reef corals can be caused by the environmentally regulated expression of multi-copy genes. High-level expression of amilFP597 is correlated with reduced photodamage of zooxanthellae under acute light stress, supporting a photoprotective function of this pigment. The cluster of light-regulated pigment genes can enable corals to invest either in expensive high-level pigmentation, offering benefits under light stress, or to rely on low tissue pigment concentrations and use the conserved resources for other purposes, which is preferable in less light-exposed environments. The genomic framework described here allows corals to pursue different strategies to succeed in habitats with highly variable light stress levels. In summary, our results suggest that the intraspecific plasticity of reef corals' stress responses is larger than previously thought.
Data from: Effect of canine oxytocin receptor gene polymorphism on the successful training of drug detection dogs
Drug detection dogs can be trained to locate various prohibited drugs with targeted odors, and they play an important role in interdiction of drug smuggling in human society. Recent studies provide the interesting hypothesis that the oxytocin system serves as a biological basis for co-evolution between dogs and humans. Here, we offer the new possibility that genetic variation of the canine oxytocin receptor (OXTR) gene may regulate the success of a dog's training to become a drug detection dog. A total of 340 Labrador Retriever dogs that were trained to be drug detection dogs in Japan were analyzed. We genotyped an exonic SNP (rs8679682) in the OXTR gene and compared the training success rate of dogs with different genotypes. We also asked dog trainers in the training facility to evaluate subjective personality assessment scores for each dog, and examined how each dog's training success was related to those scores. A significant effect of the OXTR genotype on the success of the dogs' training was found, with a higher proportion of dogs carrying the C allele (T/C and C/C genotypes) being successful candidates than dogs carrying the T/T genotype. Dog personality scores of Training Focus (Factor 1) were positively correlated with an increased likelihood that a dog would successfully complete training. Although the molecular mechanism of the OXTR gene and its functional pathway related to dog behavior remains unknown, our findings suggest that canine OXTR gene variants may regulate individual differences between dogs in their responsiveness to training for drug detection.
Substantial genetic divergence and lack of recent gene flow support cryptic speciation in a colour polymorphic bumble bee (Bombus bifarius) species complex
<p>Phenotypic polymorphism can constitute an inherent challenge for species delimitation. This issue is exemplified in bumble bees (<i>Bombus</i>), where species can exhibit high colour variation across their range, but otherwise exhibit little morphological variation to distinguish them from close relatives. We examine the species status of one of the most abundant North American bumble bees, <i>Bombus bifarius</i> Cresson, which historically was comprised of two major taxa, <i>bifarius</i> <i>s.s.</i> (<i>sensu stricto</i>) and <i>nearcticus</i>. These sublineages are recognized primarily by red and black variation in their mid-abdominal coloration, however, a continuum from black (<i>nearcticus</i>) to red (<i>bifarius s.s.</i>) variation has led to their historic synonymisation. Integrating mitochondrial and nuclear data and whole-genome sequencing, we reveal a high level of both mitochondrial and nuclear divergence delimiting two morphologically cryptic species – the red <i>bifarius s.s.</i> and the color variable (black to red) <i>nearcticus</i>. Population genomic analysis supports an absence of recent genomic admixture and a strong population structure between the two clades even in sympatry. Species distribution models predict partially differentiated niches between the genetically-inferred clades with annual precipitation being a leading differentiating variable. The<i> bifarius</i> <i>s.s. </i>lineage also occupies significantly higher elevations, with regions of sympatry being among the highest elevations in <i>nearcticus</i>. Our data also support a subspecies-level divergence between the broadly distributed <i>nearcticus</i> and the island population <i>vancouverensis</i>. In this paper, we formally recognize the two species, <i>Bombus</i> <i>bifarius</i> Cresson and <i>Bombus</i> <i>vancouverensis </i>Cresson, the latter including the subspecies <i>B. vancouverensis vancouverensis</i> <b>comb. n.</b> and <i>B. vancouverensis nearcticus</i> <b>comb. n</b>., with <i>vancouverensis </i>the name bearer due to year priority.</p> <p> </p>
Data from: Characterization of the gray whale Eschrichtius robustus genome and a genotyping array based on single-nucleotide polymorphisms in candidate genes
Genetic and genomic approaches have much to offer in terms of ecology, evolution, and conservation. To better understand the biology of the gray whale Eschrichtius robustus (Lilljeborg, 1861), we sequenced the genome and produced an assembly that contains ∼95% of the genes known to be highly conserved among eukaryotes. From this assembly, we annotated 22,711 genes and identified 2,057,254 single-nucleotide polymorphisms (SNPs). Using this assembly, we generated a curated list of candidate genes potentially subject to strong natural selection, including genes associated with osmoregulation, oxygen binding and delivery, and other aspects of marine life. From these candidate genes, we queried 92 autosomal protein-coding markers with a panel of 96 SNPs that also included 2 sexing and 2 mitochondrial markers. Genotyping error rates, calculated across loci and across 69 intentional replicate samples, were low (0.021%), and observed heterozygosity was 0.33 averaged over all autosomal markers. This level of variability provides substantial discriminatory power across loci (mean probability of identity of 1.6 × 10−25 and mean probability of exclusion >0.999 with neither parent known), indicating that these markers provide a powerful means to assess parentage and relatedness in gray whales. We found 29 unique multilocus genotypes represented among our 36 biopsies (indicating that we inadvertently sampled 7 whales twice). In total, we compiled an individual data set of 28 western gray whales (WGSs) and 1 presumptive eastern gray whale (EGW). The lone EGW we sampled was no more or less related to the WGWs than expected by chance alone. The gray whale genomes reported here will enable comparative studies of natural selection in cetaceans, and the SNP markers should be highly informative for future studies of gray whale evolution, population structure, demography, and relatedness.
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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.