A simple method, inspired by procedures used in the physics of nuclear multi-fragmentation, allows for establishing order of precedence and age of pairs of haplotypes separated by one mutation. For both haplotypes of the pair, searches for existing haplotypes, differing by increasing number of mutations, are carried out using a database. The resulting ratios of frequencies of haplotypes, found ...

OBJECTIVES To elucidate the contribution of HLA-DR-DQ haplotypes and their genotypic combinations to susceptibility to rheumatoid arthritis, and to evaluate the various models for HLA associated risk for the disease in a series of Finnish patients. METHODS 322 Finnish patients with rheumatoid arthritis were typed for common north European HLA-DR-DQ haplotypes and compared with a series of 124...

Polymorphism in the human T cell receptor 3 chain (TCRB) gene complex includes haplotypes with different numbers of TCRBV genes. An insertion/deletion related polymorphism (IDR.P) in the human TCRBV region was found to involve TCRBV gene segments. Inserted TCRB haplotypes contain an additional 21.5 kb in which three TCRBV genes are encoded, members of the TCRBV7, TCRBV9, and TCRBV13 families. T...

A current major focus in genomics is the large-scale collection of genotype data in populations in order to detect variations in the population. The variation data are sought in order to address fundamental and applied questions in genetics that concern the haplotypes in the population. Since, almost all the collected data is in the form of genotypes, but the downstream genetics questions conce...

BACKGROUND Variation in the perception of bitter tastes has been associated with eating behavior, body composition, and cardiovascular disease. Recent observations have implicated 2 common haplotypes of TAS2R38 in the determination of bitter compound-tasting ability. OBJECTIVE The objectives of the study were to examine, in the British Women's Heart and Health Study cohort, any association be...

We examined the phylogenetic distribution of cytochrome b haplotypes of the avian blood parasite genera Haemoproteus and Plasmodium across the migratory divide of the Swainson's thrush (Catharus ustulatus) in British Columbia, Canada. From 87 host individuals, we identified 8 parasite haplotypes; 4 of Plasmodium and 4 of Haemoproteus. Six haplotypes were novel; 1 Haemoproteus haplotype was iden...

Introduced over 200 yr ago to the east coast of North America, Carcinus maenas now ranges from New York to Newfoundland. In the 1980s, a secondary invasion of European lineages, termed northern haplotypes, occurred in Nova Scotia. Young-of-the-year sampled in 2007 revealed that northern haplotypes were present in low frequencies at several northwestern Atlantic sites as far south as New York; a...

results we detected nine homozygotes in patients and 15 in control subjects. homozygosity was 7.08% and 11.8% in cases and control, respectively. nine types homozygote haplotype were detected in upper region of the cav1 gene in cases and controls. three haplotypes were common in cases and controls; four haplotypes were seen in controls only and two in cases. conclusions our findings implied a s...

As ancestral haplotypes of the major histocompatibility complex (MHC) appear to define identical MHC haplotypes in unrelated individuals, unrelated individuals sharing the same ancestral haplotype should also share the same NK-defined allospecificities that have recently been shown to map to the human MHC. To test this prediction, multiple cell lines from unrelated individuals sharing the same ...