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Quantitative-trait-locus mapping in the presence of locus heterogeneity
1Program in Public Health Genetics, College of Public Health, The University of Iowa, Iowa City, IA 52242, USA. kai-wang@uiowa.edu
Abstract:
Locus heterogeneity is a concern for quantitative trait locus mapping where phenotypes are likely to be influenced by more than one gene. We introduce a model which generalizes the locus heterogeneity model of Smith (1961) from dichotomous traits to quantitative traits and consider some test statistics for this model. The type I error rates and the power of these statistics are assessed through simulation studies. These statistics are applied to a linkage study of asthma genes.
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