ACP and PGM1 polymorphisms in a Chilean population.

A random sample of 140 individuals from the population of Valparaíso, Chile, was studied for 2 polymorphic genetic markers. The gene frequency estimates were: ACP*A = 0.246 +/- 0.

[Analysis of consanguinity in some populations of the V Region, Valparaiso, Chile, from 1880 to 1969].

The population structure of 10 populations ("comunas") in Valparaíso, V Region Chile, was studied through the frequency of consanguineous marriages (%CM) and the coefficient of consanguinity (alpha), in order to know their dynamics, and gather information for clinical and genetic epidemiological studies as well as for isonymy studies. The comunas were grouped according to density: Group I, high density, more than 100 inhabitants/km2; Group II, intermediate, between 25 and 99 inhabitants/km2; and Group III, low, less than 25 inhabitants/km2. Data were obtained from parochial archives and national census, from 1880 to 1969.

[Biodemographical study in the Island of Pascua].

The aim of this study was to know the degree of miscegenation in the Easter Island population. One hundred two weddings carried out between 1987 and 1991 were recorded and the proportion of marriages between islanders and immigrants was analyzed. Also, ABO and Rh blood groups of all deliveries occurred between 1988 and 1991 were compiled.