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12 results for “SNP genotyping by SNP array”
Genotyping of the Chinese Spring x Renan mapping population with the TaBW280K SNP array
<p>The TaBW280K SNP array (Rimbert et al., PLoS ONE 2018) was used to genotype 430 Single Seed Descent (SSD) individuals<br> derived from a cross between Chinese Spring and Renan (CsRe; Choulet et al., Science 2014). Out of the 280,226 probesets, 85,276 were found to be polymorphic between the two parental lines and PHR on the population. Eventually, 83,721 (98.2%) SNPs were genetically mapped in 21 linkage groups corresponding to the 21 chromosomes of bread wheat, with no unlinked markers. This file contains the genotyping data of the 430 SSD lines.<br> </p>
Development of a high-density 665 K SNP array for rainbow trout genome-wide genotyping. Supplemental VCF file
<p>Single nucleotide polymorphism (SNP) arrays, also named « SNP chips », enable very large numbers of individuals to be genotyped at a targeted set of thousands of genome-wide identified markers. We used preexisting variant datasets from USDA, a French commercial line and 30X-coverage whole genome sequencing of INRAE isogenic lines to develop an Affymetrix 665 K SNP array (HD chip) for rainbow trout. In total, we identified 32,372,492 SNPs that were polymorphic in the USDA or INRAE databases. A subset of identified SNPs were selected for inclusion on the chip, prioritizing SNPs whose flanking sequence uniquely aligned to the Swanson reference genome, with homogenous repartition over the genome and the highest Minimum Allele Frequency in both USDA and French databases. Of the 664,531 SNPs which passed the Affymetrix quality filters and were manufactured on the HD chip, 65.3% and 60.9% passed filtering metrics and were polymorphic in two other distinct French commercial populations in which, respectively, 288 and 175 sampled fish were genotyped. Only 576,118 SNPs mapped uniquely on both Swanson and Arlee reference genomes, and 12,071 SNPs did not map at all on the Arlee reference genome. Among those 576,118 SNPs, 38,948 SNPs were kept from the commercially available medium-density 57K SNP chip. We demonstrate the utility of the HD chip by describing the high rates of linkage disequilibrium at 2 kb to 10 kb in the rainbow trout genome in comparison to the linkage disequilibrium observed at 50 kb to 100 kb which are usual distances between markers of the medium-density chip.</p> <p> </p> <p>File submitted correspond to the supplementary data 1 of the publication (under submission) : INRAE_USDA_MAF1.vcf.gz</p>
Data from: Vitis phylogenomics: hybridization intensities from a SNP array outperform genotype calls
Understanding relationships among species is a fundamental goal of evolutionary biology. Single nucleotide polymorphisms (SNPs) identified through next generation sequencing and related technologies enable phylogeny reconstruction by providing unprecedented numbers of characters for analysis. One approach to SNP-based phylogeny reconstruction is to identify SNPs in a subset of individuals, and then to compile SNPs on an array that can be used to genotype additional samples at hundreds or thousands of sites simultaneously. Although powerful and efficient, this method is subject to ascertainment bias because applying variation discovered in a representative subset to a larger sample favors identification of SNPs with high minor allele frequencies and introduces bias against rare alleles. Here, we demonstrate that the use of hybridization intensity data, rather than genotype calls, reduces the effects of ascertainment bias. Whereas traditional SNP calls assess known variants based on diversity housed in the discovery panel, hybridization intensity data survey variation in the broader sample pool, regardless of whether those variants are present in the initial SNP discovery process. We apply SNP genotype and hybridization intensity data derived from the Vitis9kSNP array developed for grape to show the effects of ascertainment bias and to reconstruct evolutionary relationships among Vitis species. We demonstrate that phylogenies constructed using hybridization intensities suffer less from the distorting effects of ascertainment bias, and are thus more accurate than phylogenies based on genotype calls. Moreover, we reconstruct the phylogeny of the genus Vitis using hybridization data, show that North American subgenus Vitis species are monophyletic, and resolve several previously poorly known relationships among North American species. This study builds on earlier work that applied the Vitis9kSNP array to evolutionary questions within Vitis vinifera and has general implications for addressing ascertainment bias in array-enabled phylogeny reconstruction.
Data from: A 34K SNP genotyping array for Populus trichocarpa: Design, application to the study of natural populations and transferability to other Populus species
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Data from: Vitis phylogenomics: hybridization intensities from a SNP array outperform genotype calls
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Data from: Development of SNP genotyping arrays in two shellfish species
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Genome-wide identification of copy number variations in Holstein cattle from Baja California, Mexico, using high-density SNP genotyping arrays
GEO Series GSE54813. Bos taurus. 12 samples. Type: Genome variation profiling by SNP array; SNP genotyping by SNP array.
SNP genotyping array of human naive pluripotent stem cells II
GEO Series GSE253926. Homo sapiens. 30 samples. Type: SNP genotyping by SNP array; Genome variation profiling by SNP array.
SNP genotyping array of human naive pluripotent stem cells
GEO Series GSE207525. Homo sapiens. 11 samples. Type: Genome variation profiling by SNP array.
Mouse Diversity Array SNP Genotyping of B10.BALBChr16 and BALB.B10Chr16 Reciprocal Consomic Strain Mice
GEO Series GSE43377. Mus musculus. 2 samples. Type: Genome variation profiling by SNP array.
Genotyping of Malignant Pleural Mesothelioma primary cell lines by SNP array
GEO Series GSE197288. Homo sapiens. 45 samples. Type: Genome variation profiling by SNP array; SNP genotyping by SNP array.
Affymetrix SNP array data for cell line and tumor genotype alignment
GEO Series GSE85838. Homo sapiens. 15 samples. Type: Genome variation profiling by genome tiling array; Third-party reanalysis.
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