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QTL Express: mapping quantitative trait loci in simple and complex pedigrees.

George Seaton1, Chris S Haley, Sara A Knott

  • 1Institute of Cell, Animal and Population Biology, University of Edinburgh, West Mains Road, Edinburgh EH9 3JT, UK. george.seaton@ed.ac.uk

Bioinformatics (Oxford, England)
|February 16, 2002
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Summary

QTL Express is a new web tool for Quantitative Trait Locus (QTL) mapping in outbred populations. It enables users to map single or multiple QTL using a regression approach with statistical testing options.

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Area of Science:

  • Genetics
  • Bioinformatics
  • Statistical Genetics

Background:

  • Quantitative Trait Locus (QTL) mapping is crucial for understanding the genetic basis of complex traits.
  • Existing QTL mapping tools often lack support for outbred populations or user-friendly interfaces.

Purpose of the Study:

  • To introduce QTL Express, the first web-based application for QTL mapping in outbred populations.
  • To provide a user-friendly platform for analyzing genetic data and identifying QTL.

Main Methods:

  • The application utilizes a regression approach for QTL mapping.
  • It accepts user-uploaded files for marker maps, trait data, and marker genotypes.
  • Includes options for permutation and bootstrap tests for statistical validation.

Main Results:

  • QTL Express facilitates the mapping of single or multiple QTL.
  • The tool supports analysis in outbred populations, a previously underserved area.
  • Offers robust statistical testing for reliable QTL identification.

Conclusions:

  • QTL Express provides a valuable and accessible tool for genetic researchers.
  • It simplifies the process of QTL mapping in complex, outbred populations.
  • Aids in the genetic dissection of complex traits through accessible bioinformatics solutions.