A demographic approach to population structure in Gyoda and Hasuda, Japan.
The mean inbreeding coefficients for Gyoda and Hasuda cities were 0.00295 for 600 couples and 0.00320 for 621 couples, respectively. The mean inbreeding coefficient decreased and the mean marital distance increased with a more recent year of marriage. The mean distances and its standard deviations between birthplaces of mates, father-offspring, mother-offspring, and sibs are 53.95 +/- 159.30 km, 43.38 +/- 174.29 km, 37.61 +/- 131.32 km and 9.42 +/- 66.39 km, respectively for the Gyoda population. These values are 98.49 +/- 270.77 km, 87.60 +/- 249.91 km, 60.05 +/- 193.63 km, and 16.36 +/- 64.64 km, respectively for the Hasuda population. The dimensionality of migration seems to be one.
D003241:Consanguinity; D003433:Crosses, Genetic; D003710:Demography; D005260:Female; D005828:Genetics, Population; D006801:Humans; D007564:Japan; D008297:Male; D008393:Marriage