Combined Expression Trait Correlations and Expression Quantitative Trait Locus Mapping
نویسندگان
چکیده
منابع مشابه
Combined Expression Trait Correlations and Expression Quantitative Trait Locus Mapping
Coordinated regulation of gene expression levels across a series of experimental conditions provides valuable information about the functions of correlated transcripts. The consideration of gene expression correlation over a time or tissue dimension has proved valuable in predicting gene function. Here, we consider correlations over a genetic dimension. In addition to identifying coregulated ge...
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Mendelian loci that control the expression levels of transcripts are called expression quantitative trait loci (eQTL). When mapping eQTL, we often deal with thousands of expression traits simultaneously, which complicates the statistical model and data analysis. Two simple approaches may be taken in eQTL analysis: (1) individual transcript analysis in which a single expression trait is mapped a...
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We evaluate the impact of three pre-processing methods for Affymetrix microarray data on expression quantitative trait locus (eQTL) mapping, using 14 CEPH Utah families (GAW Problem 1 data). Different sets of expression traits were chosen according to different selection criteria: expression level, variance, and heritability. For each gene, three expression phenotypes were obtained by different...
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The mapping of loci underlying variation in quantitative traits is proving to be a powerful tool in genetic studies of animals and other organisms. Quantitative trait locus (QTL) mapping in crosses between genetically diverse lines has shown the presence of many QTL, as similarly have studies within livestock populations. Although much remains to be done with this type of analysis, higher resol...
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Studies of the genetic loci that contribute to variation in gene expression frequently identify loci with broad effects on gene expression: expression quantitative trait locus hotspots. We describe a set of exploratory graphical methods as well as a formal likelihood-based test for assessing whether a given hotspot is due to one or multiple polymorphisms. We first look at the pattern of effects...
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ژورنال
عنوان ژورنال: PLoS Genetics
سال: 2005
ISSN: 1553-7390,1553-7404
DOI: 10.1371/journal.pgen.0020006.eor