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Mostrando ítems 31-40 de 143
La genealogía de doña Isabel Jiménez. Una aproximación a la primera fase del mestizaje en Costa Rica
(Orígenes. Revista de la Asociación de Genealogía e Historia de Costa Rica, 1(1), 271-284, 2012)
The genealogy of doña Isabel Jiménez is a evidence of Spanish-Amerindian admixture since the early Spanish Colony in Costa Rica. The observed a DNA lineage wich has an Amerindian ancestry in a a deep matrilineal genealogy. ...
Genome wide association mapping for the tolerance to the polyamine oxidase inhibitor guazatine in arabidopsis thaliana
(2016)
Guazatine is a potent inhibitor of polyamine oxidase (PAO) activity. In agriculture, guazatine is used as non-systemic contact fungicide efficient in the protection of cereals and citrus fruits against disease. The composition ...
Genes e Historia: el mestizaje en Costa Rica
(1995)
Los métodos para estudiar la transmisión hereditaria y la composición del material genético se han fortalecido en los últimos 20 años con el perfeccionamiento de nuevas técnicas de la biología molecular. Este desarrollo ...
Composition and Gene Expression of the cag Pathogenicity Island in Helicobacter pylori Strains Isolated from Gastric Carcinoma and Gastritis Patients in Costa Rica
(Infection Immunity 69 (3) 1902-1908, 2001-03)
The composition and in vitro expression of the cag pathogenicity island genes in a group of Helicobacter pylori strains obtained from patients suffering from chronic gastritis-associated dyspepsia (n = 26) or gastric ...
A Second Locus for an Axonal Form of Autosomal Recessive Charcot-Marie-Tooth Disease Maps to Chromosome 19q13.3
(American Journal Human Genetic ; 68 (1 p. 269-274, 2001)
Autosomal recessive Charcot-Marie-Tooth disease (CMT) represents a heterogeneous group of disorders affecting the peripheral nervous system. The axonal form of the disease is designated as "CMT type 2" (CMT2), and one locus ...
Parental age effects, but no evidence for an intrauterine effect in the transmission of myotonic dystrophy type 1
(European Journal of Human Genetics p.1-8, 2014-07-23)
Myotonic dystrophy type 1 (DM1) is caused by the expansion of an unstable CTG repeat (g.17294_17296(45_1000)) with more repeats associated with increased disease severity and reduced age at onset. Expanded disease-associated ...
Allozyme variation in populations of Bothrops asper (Serpentes: Viperidae in Costa Rica)
(1998-12)
We investigated allozyme variation from Costa Rican populations of the fer-de-lance, Bothrops asper. Blood samples were taken from a total of 100 specimens from six localities representing three major physiographic regions: ...
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 ...
Primary Congenital Glaucoma: A Novel Single-Nucleotide Deletion and Varying Phenotypic Expression for the 1546-1555dup Mutation in the GLC3A (CYP1B1) Gene in 2 Families of Different Ethnic Origin
(Journal Glaucoma: 12 p. 27-30, 2003-02)
Purpose: To present new molecular genetic data on primary congenital glaucoma from 2 families, 1 isolated case and 3 familial cases due to mutations in the cytochrome P-450 1B1 (CYP1B1) gene.
Methods: All diagnoses were ...
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 ...