Objective: Analyze the information contained in homozygous haplotypes detected with high density genotyping. Methods: We analyze the genotypes of ∼2,500 markers on chr 22 in 12 population samples, each including 200 individuals. We develop a measure of disequilibrium based on haplotype homozygosity and an algorithm to identify genomic segments characterized by non-random homozygosity (NRH), taking into account ...