Abstract:
:Mexican Americans are a numerous and fast growing ethnic population in the United States. Yet little is known about their genetic structure. Since they are a hybrid, it is of interest to identify their parental populations and to estimate the relative contributions of these groups. This information is relevant to historical, biomedical, and evolutionary concerns. New genetic typings on 730 Arizona Mexican Americans for the HLA-A, HLA-B, ABO, Rh, MNSs, Duffy, Kidd, and Kell loci are presented here and they are used to estimate ancestral contributions. We considered both a dihybrid model with Amerindians and Spaniards as proposed ancestors, and a trihybrid model with Amerindians, Spaniards, and Africans as proposed ancestors. A modified weighted least squares method that allows for linkage disequilibrium was used to estimate ancestral contributions for each model. The following admixture estimates were obtained: Amerindian, 0.29 +/- 0.04; Spaniard, 0.68 +/- 0.05; and African, 0.03 +/- 0.02. The interpretation of these results with respect to Amerindian and Spanish ancestry is straightforward. African ancestry is strongly supported by the presence of a marker of African descent, Fy, despite the fact that the standard error of the estimate is as large as the estimated admixture proportion. An evaluation of the sensitivity of these results to a number of variables is presented: 1) our choices of ancestral allele frequencies, 2) the possibility of selection at HLA and the blood groups, and 3) genetic drift in Mexican Americans.
journal_name
Am J Phys Anthropoljournal_title
American journal of physical anthropologyauthors
Long JC,Williams RC,McAuley JE,Medis R,Partel R,Tregellas WM,South SF,Rea AE,McCormick SB,Iwaniec Udoi
10.1002/ajpa.1330840204subject
Has Abstractpub_date
1991-02-01 00:00:00pages
141-57issue
2eissn
0002-9483issn
1096-8644journal_volume
84pub_type
杂志文章abstract::Determination of inseparable exogenous and endogenous levels of toxic trace elements such as lead in human scalp hair has been used to understand and assess population exposure to such elements. For any such analysis, washing of the hair samples to remove superficial contamination is the foremost requirement. However,...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1083
更新日期:2001-07-01 00:00:00
abstract::Proportions of marine vs. terrestrial resources in prehistoric human diets in the southern Mariana Islands (Guam, Rota, Saipan), Micronesia, have been estimated by analysis of stable isotope ratios of carbon and nitrogen in bone collagen and of carbon in apatite. The isotopic composition of marine and terrestrial food...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/(SICI)1096-8644(199711)104:3<343::AID-AJPA
更新日期:1997-11-01 00:00:00
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journal_title:American journal of physical anthropology
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
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journal_title:American journal of physical anthropology
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doi:10.1002/ajpa.22248
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journal_title:American journal of physical anthropology
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doi:10.1002/ajpa.21381
更新日期:2011-02-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
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journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330510414
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journal_title:American journal of physical anthropology
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doi:10.1002/ajpa.20017
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journal_title:American journal of physical anthropology
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更新日期:1996-02-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330650108
更新日期:1984-09-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.10086
更新日期:2002-05-01 00:00:00
abstract::In the present study the frequency of the simian crease among 57 Down patients is compared to the corresponding figures of related and unrelated individuals. A study of the correlation with the dermatoglyphic patterns of the thenar and hypothenar areas is presented, the palm print classification being carried out acco...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330720303
更新日期:1987-03-01 00:00:00
abstract::The archaeological evidence of ancient cranial surgery is limited to cases of trepanation and cauterization. I report here on the only known case of cranial surgery in direct association with the osseous image of a non-trauma-induced soft tissue lesion (sinus pericranii). This case, from Alameda County, California (La...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330980209
更新日期:1995-10-01 00:00:00
abstract:OBJECTIVES:To describe the physical growth of healthy children under 7 years in China based on the latest national survey and provide more data for revising growth reference and monitoring the impact of social development on children's health and growth. METHODS:In the cross-sectional survey, 161,774 healthy children ...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23224
更新日期:2017-07-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23606
更新日期:2018-09-01 00:00:00
abstract::Variation in height and body proportions is relatively well-understood at the inter-population level, but less is known about intra-population variation. This study explores intra-population variation in body proportions among 172 (88 female; 84 male) adult rural Amazonians. We test the hypotheses that: (1) stunting i...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.21636
更新日期:2012-01-01 00:00:00
abstract::Ontogenetic samples of endocranial volumes (EVs) from great apes and humans are critical for understanding the evolution of the brain growth pattern in the hominin lineage. However, high quality ontogenetic data are scarce, especially for nonhuman primates. Here, we provide original data derived from an osteological c...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.21641
更新日期:2012-02-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22401
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23140
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journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.1330460203
更新日期:1977-03-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/(SICI)1096-8644(199906)109:2<229::AID-AJPA
更新日期:1999-06-01 00:00:00
abstract:OBJECTIVES:The purpose of this study is to demonstrate advantages of principal component analysis (PCA) as a standardized procedure in the evaluation of osteoarthritis (OA) in a skeletal series to: (1) compute aggregate scores for joint complexes that accurately capture pathological expression, (2) reveal which variabl...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.23130
更新日期:2017-03-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.20136
更新日期:2005-08-01 00:00:00
abstract::The most common live-born human aneuploidy is trisomy 21, which causes Down syndrome (DS). Dosage imbalance of genes on chromosome 21 (Hsa21) affects complex gene-regulatory interactions and alters development to produce a wide range of phenotypes, including characteristic facial dysmorphology. Little is known about h...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.22255
更新日期:2013-05-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/ajpa.20774
更新日期:2008-05-01 00:00:00
abstract::Metric and morphological characterizations of the permanent teeth from a total of 155 prehistoric Amerindians are presented. The individuals represent samples from three Ohio Valley burial complexes (considered together as the Late Diffuse group): Glacial Kame, Adena and Ohio Hopewell. Metric data include common measu...
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pub_type: 历史文章,杂志文章
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abstract::Pair-bonding in the genus Papio seems to be the result of fusion of troops as well as fission. When troop segments regularly split and join again, males who permanently maintain exclusive access to a few females may have an advantage over males who compete for all females who are in estrus. When two or more troops reg...
journal_title:American journal of physical anthropology
pub_type: 杂志文章
doi:10.1002/ajpa.1330600104
更新日期:1983-01-01 00:00:00
abstract::Sexual dimorphism is a pervasive phenomenon among anthropoid primates. Comparative analyses over the past 30 years have greatly expanded our understanding of both variation in the expression of dimorphism among primates, and the underlying causes of sexual dimorphism. Dimorphism in body mass and canine tooth size is f...
journal_title:American journal of physical anthropology
pub_type: 杂志文章,评审
doi:10.1002/ajpa.10011.abs
更新日期:2001-01-01 00:00:00