title: Testing for concordant equilibria between population samples.
abstract: A substantial body of theory has been developed to assess the effect of evolutionary forces on the distribution of genotypes, both single and multilocus, within populations. One area where the potential for application of this theory has not been fully appreciated concerns the extent to which population samples differ. Within populations, the divergence of genotype or haplotype frequencies from that expected under Hardy-Weinberg (HW) or linkage equilibrium can be measured as disequilibria coefficients. To assess population samples for concordant equilibria, an analytical framework for comparing disequilibria coefficients between populations is necessary. Here we present log-linear models to evaluate such hypotheses. These models have broad utility ranging from conventional population genetics to genetic epidemiology. We demonstrate the use of these log-linear models (1) as a test for genetic association with disease and (2) as a test for different levels of linkage disequilibria between human populations.
authors: Human Genetics Group, John Curtin School of Medical Research, The Australian National University, Canberra, ACT 0200, Australia. gavin.huttley@anu.edu.au
authors: G A
authors: GA
authors: Huttley
authors: S R
authors: SR
authors: Wilson
mesh_terms: D000818:Animals; D015986:Confounding Factors, Epidemiologic; D005006:Ethnicity / Q000235:genetics; D019143:Evolution, Molecular; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D014644:Genetic Variation; D005828:Genetics, Population; D005838:Genotype; D015658:HIV Infections / Q000235:genetics; D006239:Haplotypes / Q000235:genetics; D006801:Humans; D016014:Linear Models; D015810:Linkage Disequilibrium; D008951:MNSs Blood-Group System / Q000235:genetics; D051379:Mice; D008957:Models, Genetic; D012641:Selection, Genetic
chemical_list: D008951:MNSs Blood-Group System