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E J Parra

Explore the profile of E J Parra including associated specialties, affiliations and a list of published articles. Areas
Snapshot
Articles 17
Citations 1068
Followers 0
Related Specialties
Genetics
Social Sciences
Biology
Top 10 Co-Authors
M D Shriver
P M McKeigue
R E Ferrell
M Cruz
C Bonilla
J Kumate
A Valladares
C L Pfaff
N Wacher
C Llano
Published In
Am J Phys Anthropol
Ann Hum Genet
Am J Hum Biol
Am J Hum Genet
Diabetologia
Affiliations
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Recent Articles
11.
Estimation of admixture and detection of linkage in admixed populations by a Bayesian approach: application to African-American populations
McKeigue P, Carpenter J, Parra E, Shriver M
Ann Hum Genet . 2001 Mar; 64(Pt 2):171-86. PMID: 11246470
We describe a novel method for analysis of marker genotype data from admixed populations, based on a hybrid of Bayesian and frequentist approaches in which the posterior distribution is generated...
12.
Ancestral proportions and admixture dynamics in geographically defined African Americans living in South Carolina
Parra E, Kittles R, Argyropoulos G, Pfaff C, Hiester K, Bonilla C, et al.
Am J Phys Anthropol . 2001 Jan; 114(1):18-29. PMID: 11150049
We analyzed admixture in samples of six different African-American populations from South Carolina: Gullah-speaking Sea Islanders in coastal South Carolina, residents of four counties in the "Low Country" (Berkeley, Charleston,...
13.
Population structure in admixed populations: effect of admixture dynamics on the pattern of linkage disequilibrium
Pfaff C, Parra E, Bonilla C, Hiester K, McKeigue P, Kamboh M, et al.
Am J Hum Genet . 2000 Dec; 68(1):198-207. PMID: 11112661
Gene flow between genetically distinct populations creates linkage disequilibrium (admixture linkage disequilibrium [ALD]) among all loci (linked and unlinked) that have different allele frequencies in the founding populations. We have...
14.
Comparison of narrow-band reflectance spectroscopy and tristimulus colorimetry for measurements of skin and hair color in persons of different biological ancestry
Shriver M, Parra E
Am J Phys Anthropol . 2000 Apr; 112(1):17-27. PMID: 10766940
We have used two modern computerized handheld reflectometers, the Photovolt ColorWalk colorimeter (a tristimulus colorimeter; Photovolt, UMM Electronics, Indianapolis, IN) and the DermaSpectrometer (a specialized narrow-band reflectometer; Cortex Technology, Hadsund,...
15.
Estimating African American admixture proportions by use of population-specific alleles
Parra E, Marcini A, Akey J, Martinson J, Batzer M, Cooper R, et al.
Am J Hum Genet . 1998 Dec; 63(6):1839-51. PMID: 9837836
We analyzed the European genetic contribution to 10 populations of African descent in the United States (Maywood, Illinois; Detroit; New York; Philadelphia; Pittsburgh; Baltimore; Charleston, South Carolina; New Orleans; and...
16.
Genetic structure of the population of Cabo Verde (west Africa): evidence of substantial European admixture
Parra E, Ribeiro J, Caeiro J, Riveiro A
Am J Phys Anthropol . 1995 Aug; 97(4):381-9. PMID: 7485435
The population of Cabo Verde was founded in the fifteenth century (1462), on the basis of slaves brought from the West African coast and a few Europeans, mainly from Portugal....
17.
Distribution of alpha-2-HS-glycoprotein (AHSG) phenotypes in Cabo Verde (west Africa): description of a new allele, AHSG*32
Caeiro J, Parra E, Yuasa I, Teixeira C, Llano C
Gene Geogr . 1994 Apr; 8(1):1-6. PMID: 7619771
The genetic polymorphism of alpha-2-HS-glycoprotein (AHSG) was studied in the population of Cabo Verde (West Africa), using isoelectric focusing in polyacrylamide gels followed by immunofixation-silver stain. AHSG frequencies are reported...