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Mostrando ítems 31-40 de 58
Demografía y genética de la población amerindia Guaymí de Limoncito, Costa Rica
(Revista de Biología Tropical 29(1):123-131, 1981)
El estudio de las poblaciones indígenas es muy importante para la comprensión de la estructura cultural, genética y ecológica de los grupos humanos. En las últimas dos décadas se ha desarrollado un intenso trabajo teórico ...
High mitochondrial mutation rates estimated from deep-rooting Costa Rican pedigrees
(American Journal of Physical Anthropology 2012 July ; 148(3): 327–333., 2012-07)
Estimates of mutation rates for the noncoding hypervariable Region I (HVR-I) of mitochondrial
DNA (mtDNA) vary widely, depending on whether they are inferred from phylogenies (assuming
that molecular evolution is clock-like) ...
Aspectos ecológicos del cáncer gástrico en Costa Rica
(Revista de Biología Tropical 31(1) p.11-18, 1983-07-18)
An analysis of 1315 cases of gastric cancer from the records of the Ministry of Public Health, San
Jose, Costa Rica between 1977 and 1980 showed important geographical differences in the incidence, and
especially in ...
Epidemiología del cáncer de cuello uterino en Costa Rica, 1980-1983
(1988)
Las tasas de cáncer de cuello uterino varían mucho entre los países y frecuentemente dentro de una misma población, según las diferentes comunidades que la forman. Entre los países que presentan mayores tasas de incidencia ...
Blood Group, Red Cell, and Serum Protein Variation in the Cabecar and Huetar, Two Chibchan Amerindian Tribes of Costa Rica
(American Journal Human Biology ;13 (1): p. 57-64, 2001)
Genetic variation, using blood groups and red cell and serum proteins, was surveyed in the Cabecar of Chirripo and the Huetar of Quitirrisi, Costa Rica. Thirty-nine loci were screened in a sample of 91 Cabecars and 40 loci ...
Genetic variation of the Y chromosome in Chibcha-Speaking amerindians of Costa Rica and Panama
(Human Biology 77(1): 71-91, 2005)
Genetic variation of the Y chromosome in five Chibchan tribes (Bribri, Cabecar, Guaymi, Huetar, and Teribe) of Costa Rica and Panama was analyzed using six microsatellite loci (DYS 19, DYS389A, DYS389B, DYS390, DYS391, and ...
Una hipótesis evolutiva sobre la ausencia del antígeno (Di-a) en Amerindios chibchas
(1990)
Se estudiaron 141 tribus amerindias de todo
el continente y esquimales de Alaska y Canadá
en relación con el grupo sanguíneo Diego. Se
encontró que 26 (18%) no presentaron el antígeno
Di-a y de estas 20 (77%) pertenecían ...
Mitochondrial DNA “clock” for the Amerinds and its implications for timing their entry into North America
(1994-02)
Students of the time of entry of the ancestors of the Amerinds into the New World are divided into two camps, one favoring an "early" entry [more than approximately 30,000 years before the present (YBP)], the other favoring ...
Distribution and Evolution of CTG Repeats at the Myotonin Protein Kinase Gene in Human Populations
(1996)
We have analyzed the CTG repeat length and the neighboring Alu insertion/deletion (+/-) polymorphism in DNA samples from 16 ethnically and geographically diverse human populations to understand the evolutionary dynamics ...
Phenylketonuria in Costa Rica: preliminary spectrum of PAH mutations and their associations with highly polymorphic haplotypes
(1996)
A preliminary evaluation of the molecular basis of phenylketonuria (PKU) in Costa Rica was made by performing mutational analyses in the six PKU families identified to date. These studies revealed the presence of the ...