HOME >> BIOLOGY >> NEWS
Improved statistical tools reveal many linked loci

An innovative new statistical method, described in the open-access journal PLoS Biology, streamlines the computation required to identify all the potential locations in the genome that influence a particular physical trait, or phenotype. Thanks to the new method developed by John Storey, Joshua M. Akey, and Leonid Kruglyak, researchers have a more efficient genome-mining technique to help them identify all the genomic elements that produce specific traits. In brewer's yeast alone, Storey and colleagues found that 37% of gene expression traits link to two loci, or positions in the genome.

"We were interested in being able to find combinations of genes that affect the phenotype," says Kruglyak. "It's generally thought that most traits of interest have a complex underlying genetic basis, but it's generally been pretty difficult to get at those." Typically, researchers might be able to find only one of the genetic factors, even though more than one genetic location contributes to the observed trait, such as blood pressure or cell growth.

The new statistical method bypasses the previously overwhelming computations needed to puzzle together the myriad elements that influence gene expression throughout an entire genome. And unlike earlier approaches to understanding how multiple loci interact, the new technique can distinguish between a group of genes with a linked subset and a group of genes with "joint linkage," where each gene site links to another.

"In some ways, it looks like you're complicating a problem because you're looking at thousands of genes instead of one trait," says Kruglyak. In reality, the method creates statistical conclusions that are more precise, he explains, because you're using so much data.

Storey et al. compared their method to another statistical method, called two-dimensional linkage analysis, which tests for linkage between all pa
'"/>

Contact: Paul Ocampo
press@plos.org
415-624-1224
Public Library of Science
25-Jul-2005


Page: 1 2

Related biology news :

1. Improved NIST SRM aids lead poisoning detection
2. Improved predictions of warming-induced extinctions sought
3. Improved imaging for identifying breast cancer in overweight women
4. Improved speech without vocal cords
5. Improved blood safety measures from Pall can increase platelet availability
6. Improved process of drying lumber may save millions
7. Improved cancer treatments aim of new biology research program
8. Improved recipe for magnetic brain stimulation
9. Improved molecular switch could serve as sensor, medical tool
10. Gene therapy study shows safety and statistically significant improvement in Parkinsons disease
11. In new statistical approach, data decide model

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Improved statistical tools reveal many linked loci

(Date:7/30/2014)... A group of researchers from the University of Helsinki ... experimentally to reproduce in mice morphological changes which have ... gradual modifications in the embryonic development of mice teeth, ... morphologically are very similar to those observed in the ... millions of years ago. , To modify the ...
(Date:7/30/2014)... is pleased to announce its new relationship with the ... and CINP will partner to publish International Journal ... open-access journal. , Alan Frazer, Editor-in-Chief of IJNP ... expertise of OUP will further facilitate the goal for ... very leading journals within neuropsychopharmacology. The conversion of the ...
(Date:7/30/2014)... $1 million from the Cornelia Cogswell Rossi Foundation to ... , The newly established Connie Cogswell Rossi ... a greater breadth and depth of knowledge of neurobehavioral ... of research to improve human health. , The new ... Laboratory and its external partners, supporting research to enhance ...
Breaking Biology News(10 mins):Scientists reproduce evolutionary changes by manipulating embryonic development of mice 2OUP to partner with the International College of Neuropsychopharmacology 2Rossi Foundation pledges $1M for JAX neurobehavioral research center 2
(Date:7/30/2014)... (PRWEB) July 30, 2014 ... of leading Immunologists, Principle Investigators, scientists in the ... J Malemud, Professor at Case Western Reserve University ... his keynote address on “The effects of ... production of matrix metalloproteinase-9”. Arya Biragyn, a Senior ...
(Date:7/29/2014)... 2014 SoundConnect , an ... is proud to announce the strategic additions of ... their Boston, Charleston and Atlanta offices. SoundConnect’s ... demand for hosted solutions, collaboration and mobility that ... cost. , SoundConnect was founded in 2004, with ...
(Date:7/29/2014)... have hurdled a number of significant technological challenges ... observing technology originally created for the James Webb ... Investigator Harvey Moseley, a scientist at NASA,s Goddard ... that electrostatically actuated microshutter arrays that is, ... are as functional as the current technology,s magnetically ...
(Date:7/29/2014)... DIEGO , July 29, 2014   Sequenom, ... sciences company that provides innovative genetic analysis solutions, and ... of esoteric laboratory services in the United ... noninvasive prenatal testing patents and applications. "We ... innovation, and patient care, and we welcome the opportunity ...
Breaking Biology Technology:Unveiling Breakthroughs in Clinical & Cellular Immunology 2Unveiling Breakthroughs in Clinical & Cellular Immunology 3SoundConnect Organization and Culture is Evolving 2Revolutionary microshutter technology hurdles significant challenges 2Revolutionary microshutter technology hurdles significant challenges 3Revolutionary microshutter technology hurdles significant challenges 4Sequenom Enters Into License Agreement With Mayo Medical Laboratories 2Sequenom Enters Into License Agreement With Mayo Medical Laboratories 3Sequenom Enters Into License Agreement With Mayo Medical Laboratories 4
Cached News: