Resampling QTL Effects in the QTL Sign Test Leads to Incongruous Sensitivity to Variance in Effect Size

Abstract Allelic effects at quantitative trait loci (QTL) between lineages are potentially informative for indicating the action of natural selection. The QTL Sign Test uses the number of + and − alleles observed in a QTL study to infer a history of selection. This test has been constructed to condi...

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Bibliographic Details
Published in:G3 : genes - genomes - genetics 2012-08, Vol.2 (8), p.905-911
Main Authors: Rice, Daniel P, Townsend, Jeffrey P
Format: Article
Language:English
Subjects:
Alleles
Investigations
Models, Genetic
Phenotype
Quantitative Trait Loci
Quantitative Trait, Heritable
Selection, Genetic
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Summary:Abstract Allelic effects at quantitative trait loci (QTL) between lineages are potentially informative for indicating the action of natural selection. The QTL Sign Test uses the number of + and − alleles observed in a QTL study to infer a history of selection. This test has been constructed to condition on the phenotypic difference between the two lines in question. By applying the test to QTL data simulated under selection, we demonstrate that conditioning on the phenotypic difference results in a loss of power to reject the neutral hypothesis and marked sensitivity to variation in locus effect magnitude.
ISSN:2160-1836
2160-1836
DOI:10.1534/g3.112.003228