نتایج جستجو برای: quantitative trait

تعداد نتایج: 378844  

Journal: :Genetics 2003
Mark C Ungerer Solveig S Halldorsdottir Michael D Purugganan Trudy F C Mackay

Phenotypic plasticity and genotype-environment interactions (GEI) play a prominent role in plant morphological diversity and in the potential functional capacities of plant life-history traits. The genetic basis of plasticity and GEI, however, is poorly understood in most organisms. In this report, inflorescence development patterns in Arabidopsis thaliana were examined under different, ecologi...

Journal: :Genetical research 1999
Z B Zeng C H Kao C J Basten

Understanding and estimating the structure and parameters associated with the genetic architecture of quantitative traits is a major research focus in quantitative genetics. With the availability of a well-saturated genetic map of molecular markers, it is possible to identify a major part of the structure of the genetic architecture of quantitative traits and to estimate the associated paramete...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2013
Alexandra C Nica Emmanouil T Dermitzakis

The last few years have seen the development of large efforts for the analysis of genome function, especially in the context of genome variation. One of the most prominent directions has been the extensive set of studies on expression quantitative trait loci (eQTLs), namely, the discovery of genetic variants that explain variation in gene expression levels. Such studies have offered promise not...

Journal: :Genetics 2008
Hyun Min Kang Chun Ye Eleazar Eskin

In genomewide mapping of expression quantitative trait loci (eQTL), it is widely believed that thousands of genes are trans-regulated by a small number of genomic regions called "regulatory hotspots," resulting in "trans-regulatory bands" in an eQTL map. As several recent studies have demonstrated, technical confounding factors such as batch effects can complicate eQTL analysis by causing many ...

Journal: :Genetics 1999
B Bost C Dillmann D de Vienne

The fluxes through metabolic pathways can be considered as model quantitative traits, whose QTL are the polymorphic loci controlling the activity or quantity of the enzymes. Relying on metabolic control theory, we investigated the relationships between the variations of enzyme activity along metabolic pathways and the variations of the flux in a population with biallelic QTL. Two kinds of varia...

Journal: :Genetics 2009
Hyonho Chun Sündüz Keles

Expression quantitative trait loci (eQTL) mapping concerns finding genomic variation to elucidate variation of expression traits. This problem poses significant challenges due to high dimensionality of both the gene expression and the genomic marker data. We propose a multivariate response regression approach with simultaneous variable selection and dimension reduction for the eQTL mapping prob...

2014
Pavel Goldstein Abraham B. Korol Anat Reiner-Benaim

OBJECTIVE AND METHODS This paper proposes an inegrative two-stage genome-wide search for pairwise epistasis on expression quantitative trait loci (eQTL). The traits are clustered into multi-trait complexes that account for correlations between them that may result from common epistasis effects. The search is done by first screening for epistatic regions and then using dense markers within the i...

2015
Harm-Jan Westra Danny Arends Tõnu Esko Marjolein J. Peters Claudia Schurmann Katharina Schramm Johannes Kettunen Hanieh Yaghootkar Benjamin P. Fairfax Anand Kumar Andiappan Yang Li Jingyuan Fu Juha Karjalainen Mathieu Platteel Marijn Visschedijk Rinse K. Weersma Silva Kasela Lili Milani Liina Tserel Pärt Peterson Eva Reinmaa Albert Hofman André G. Uitterlinden Fernando Rivadeneira Georg Homuth Astrid Petersmann Roberto Lorbeer Holger Prokisch Thomas Meitinger Christian Herder Michael Roden Harald Grallert Samuli Ripatti Markus Perola Andrew R. Wood David Melzer Luigi Ferrucci Andrew B. Singleton Dena G. Hernandez Julian C. Knight Rossella Melchiotti Bernett Lee Michael Poidinger Francesca Zolezzi Anis Larbi De Yun Wang Leonard H. van den Berg Jan H. Veldink Olaf Rotzschke Seiko Makino Veikko Salomaa Konstantin Strauch Uwe Völker Joyce B. J. van Meurs Andres Metspalu Cisca Wijmenga Ritsert C. Jansen Lude Franke

The functional consequences of trait associated SNPs are often investigated using expression quantitative trait locus (eQTL) mapping. While trait-associated variants may operate in a cell-type specific manner, eQTL datasets for such cell-types may not always be available. We performed a genome-environment interaction (GxE) meta-analysis on data from 5,683 samples to infer the cell type specific...

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