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Lessons learned from the dog genome.

Robert K Wayne1, Elaine A Ostrander

  • 1Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 91302, USA. rwayne@ucla.edu

Trends in Genetics : TIG
|October 30, 2007
PubMed
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Dogs are valuable models for studying genome evolution and complex traits. Their domestication involved wolf gene flow, and breed-specific traits are now being uncovered through genetic analysis.

Area of Science:

  • Canine genomics
  • Evolutionary biology
  • Population genetics

Background:

  • Dogs possess extensive genetic resources and a high-quality genome sequence.
  • Genomic studies have advanced understanding of canine evolutionary history and origins.
  • Domestication involved genetic contributions from multiple gray wolf populations via backcrossing.

Purpose of the Study:

  • To highlight the dog as a model species for genome evolution and population genetics.
  • To explore the genetic basis of complex phenotypic traits in dogs.
  • To leverage new genomic resources for understanding canine origins and breed diversification.

Main Methods:

  • Utilizing extensive genetic resources and a high-quality genome sequence.
  • Analyzing newly developed genomic data to understand evolutionary history.

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  • Employing genome-wide association studies and selective sweep scans.

    • Main Results:

    • The dog serves as a key model for understanding genome evolution and population genetics.
    • Domestication involved genetic introgression from multiple wolf populations.
    • Breed-specific genetic variations underlying phenotypic traits are being identified.
    • The dog is emerging as a resource for studying the genetic basis of complex traits, including behavior.

    Conclusions:

    • Dogs are powerful models for genetic research due to their evolutionary history and genomic resources.
    • Understanding dog domestication provides insights into population genetics and adaptation.
    • Genetic analysis, including GWAS, is crucial for discovering genes associated with canine traits and behaviors.