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Marker-Assisted Selection

Last Updated: January 14, 2010

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Fact Sheet Written by:

Alison Van Eenennaam, Cooperative Extension Specialist

And Provided by:

University of California, Davis http://animalscience.ucdavis.edu

Marker-assisted selection (MAS) is the process of using the results of DNA testing to assist in the selection of individuals to become parents in the next generation. The genotypic information provided by DNA testing should help to improve the accuracy of selection and increase the rate of genetic progress by identifying animals carrying desirable genetic variants for a given trait at an earlier age.

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MAS

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