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Craniometric variation among modern human populations
Abstract
Previous studies of genetic markers and mitochondrial DNA have found that the amount of variation among major geographic groupings of Homo sapiens is relatively low, accounting for roughly 10% of total variation. This conclusion has had implications for the study of human variation and consideration of alternative models for the origin of modern humans. By contrast, it has often been assumed that the level of among-group variation for morphological traits is much higher. This study examines the level of among-group variation based on craniometric data from a large sample of modern humans originally collected by W. W. Howells. A multivariate method based on quantitative genetics theory was used to provide an estimate of FST--a measure of among-group variation that can be compared with results from studies of genetic markers. Data for 57 craniometric variables on 1,734 crania were analyzed. These data represent six core areas: Europe, Sub-Saharan Africa, Australasia, Polynesia, the Americas, and the Far East. An additional set of analyses was performed using a three-region subset (Europe, Sub-Saharan Africa, and the Far East) to provide comparability with several genetic studies. The minimum FST (assuming complete heritability) for the three-region analysis is 0.065, and the minimum FST for the six-region analysis is 0.085. Both of these are less than the average FST from genetic studies (average estimates of 0.10-0.11). The smaller value of the minimum FST estimates is expected since it provides an estimate of FST expected under complete heritability. Using an estimate of average craniometric heritability from the literature provides an estimate of FST of 0.112 for the three-region analysis and 0.144 for the six-region analysis. These results show that genetic and craniometric data are in agreement, qualitatively and quantitatively, and that there is limited variation in modern humans among major geographic regions.
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“In these studies, h2 was assumed to be 0.55 and c was implicitly assumed to be 1, resulting in c/h2 to be greater than 1.”
From Investigating the case of human nose shape and climate adaptation (2017) · cites this paper as [35]
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“Qst calculated this way is probably best considered to be the ‘minimum’ Qst proposed by Relethford (1994) [35].”
From Investigating the case of human nose shape and climate adaptation (2017) · cites this paper as [35]
In the citing paper
“Qst calculated this way is probably best considered to be the ‘minimum’ Qst proposed by Relethford (1994) [35].”
From Investigating the case of human nose shape and climate adaptation (2017) · cites this paper as Relethford (1994)
Citations
Cites
Introduction to Quantitative Genetics.
Edwards, A. W. F., & Falconer, D. S. (1982) · Biometrics · doi:10.2307/2529912 · Cited by 21,447
THE GENETICAL STRUCTURE OF POPULATIONS
Wright, S. (1949) · Annals of Eugenics · doi:10.1111/j.1469-1809.1949.tb02451.x · Cited by 6,729
Mitochondrial DNA and human evolution
Cann, R. L., Stoneking, M., & Wilson, A. C. (1987) · Nature · doi:10.1038/325031a0 · Cited by 3,100
The Apportionment of Human Diversity
Lewontin, R. C. (1972) · Evolutionary Biology · doi:10.1007/978-1-4684-9063-3_14 · Cited by 2,472
African Populations and the Evolution of Human Mitochondrial DNA
Vigilant, L., Stoneking, M., Harpending, H. C., Hawkes, K., & Wilson, A. C. (1991) · Science · doi:10.1126/science.1840702 · Cited by 1,338
Genetic and Fossil Evidence for the Origin of Modern Humans
Stringer, C. B., & Andrews, P. (1988) · Science · doi:10.1126/science.3125610 · Cited by 970
A COMPARISON OF GENETIC AND PHENOTYPIC CORRELATIONS
Cheverud, J. M. (1988) · Evolution · doi:10.1111/j.1558-5646.1988.tb02514.x · Cited by 839
The Genetic Structure of Populations
Jacquard, A. (1974) · Springer eBooks · doi:10.1007/978-3-642-88415-3 · Cited by 703
The Genetic Structure of Ancient Human Populations
Harpending, H. C., Sherry, S. T., Rogers, A. R., & Stoneking, M. (1993) · Current Anthropology · doi:10.1086/204195 · Cited by 680
Papers, P. M. (1977) · Journal of Human Evolution · doi:10.1016/s0047-2484(77)80073-0 · Cited by 589
Research works printed but not linked: 4
- Howells WW, 1973, Methods and Theories, of Anthropological Genetics, 159
- Nei M, 1982, Genetic relationship and evolution of human races, Evol. Biol., 14, 159
- Williams‐Blangero S, 1989, Anthropometric variation and the genetic structure of the Jirels of Nepal, Hum. Biol., 61, 1
- Wolpoff MH, 1989, The Human Revolution: Behavioural and Biological Perspectives on the Origins of Modern Humans, 62
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Metadata
- Authors
- Relethford, J. H.
- Affiliations
- SUNY Oneonta (US)
- Corresponding author
- Relethford, John H.
- ORCID
- Relethford, John H.
- Venue
- American Journal of Physical Anthropology
- Publisher
- Wiley
- Published
- 1994-09
- Volume
- 95
- Issue
- 1
- Pages
- 53-62
- ISSN
- 0002-9483 (ISSN-L)
- 1096-8644
- OpenAlex
- W2110052863
- Cited by
- 418
- References
- 35
- Citations by year
- 2026: 3 · 2025: 5 · 2024: 5 · 2023: 8 · 2022: 7 · 2021: 8 · 2020: 6 · 2019: 11 · 2018: 22 · 2017: 28 · 2016: 22 · 2015: 14 · 2014: 22 · 2013: 17 · 2012: 20
- FWCI
- 12.78
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- American Journal of Physical Anthropology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- State University of New York
- Topics
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Morphological variations and asymmetry
- Social Sciences › Arts and Humanities › Archeology (arts and humanities) › Forensic Anthropology and Bioarchaeology Studies
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Forensic and Genetic Research
- Keywords
- craniometric variation, FST, modern human populations, genetic variation, modern human origins
- MeSH terms
- Africa, Americas, Asia, Australia, Cephalometry, Craniology, Europe, Female, Humans, Male, Polynesia, Skull, Genetic Variation
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