Family resemblance for cranio‐facial measurements in Velanti Brahmins from Andhra Pradesh, India

Poosha, D. V. R.; Byard, Pamela J.; Satyanarayana, M. L.; Rice, John P.; Rao, D. C.

doi:10.1002/ajpa.1330650104

Cited by 26 publications

(11 citation statements)

References 9 publications

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“…Specifically, these heritability patterns contradict the observation made by Osborne and DeGeorge (1959) that the longitudinal measurements tend to have higher familial correlations, thus implying higher heritabilities than do breadth or soft tissue measures. In fact, the observed higher heritabilities for craniofacial Reddy (204) Telaga (475) Nagara (218) Akshatriya (232) Mala ( traits in the present study support the view that head and facial morphology is largely genetically determined in caste groups, since these differences may be due to differences in mandibular development (Poosha et al 1984;Sharma and Susanne 1991). Remarkable effects of diverse environments on the phenotypic variance of craniofacial traits may indicate that selection pressures are operating on craniofacial traits, especially facial and mandibular traits (Sharma and Susanne 1991).…”

Section: Discussionsupporting

confidence: 86%

“…Estimation of heritabilities through the variance components approach yielded a wide range of heritabilities (25%-61%) for 23 anthropometric phenotypes, and most of them were significant. Overall, most of these anthropometric phenotypes exhibited moderate (30%-40%) heritabilities, while some of these heritability estimates were relatively low compared to those in other studies in the literature (Devi and Reddy 1983;Poosha et al 1984;Byard et al 1985b).…”

Section: Discussionmentioning

confidence: 54%

“…This data-collection strategy is also necessary in societies such as India, where opposite-sex contact is generally not allowed. For example, Mueller and Titcomb (1977), Poosha et al (1984), and Byard et al (1985aByard et al ( , 1985b have used a similar method of data collection.…”

Section: Study Populationsmentioning

confidence: 99%

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Heritability of Anthropometric Phenotypes in Caste Populations of Visakhapatnam, India

Arya¹,

Duggirala²,

Comuzzie³

et al. 2002

Human Biology

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In this study, we used anthropometric data from six Andhra caste populations to examine heritability patterns of 23 anthropometric phenotypes (linear, craniofacial, and soft tissue measures) with special reference to caste differences. We obtained anthropometric data from 342 nuclear families from Brahmin, Reddy, Telaga, Nagara, Ag. Kshatriya, and Mala castes of Visakhapatnam, India. These caste groups represent the existing hierarchical stratification of Indian populations. We used a variance components approach to determine the heritability (h 2 ) of these 23 anthropometric phenotypes (height, weight, BMI, etc.). The sample consisted of 1918 individuals ranging in age from 6 to 72 years (mean = 21.5, S.D. = 13.8). The heritabilities (h 2 ± S.E.) for all anthropometric traits for the entire sample were significant ( p < 0.0001) and varied from 0.25 ± 0.05 (BMI) to 0.61 ± 0.05 (bizygomatic breadth) after accounting for sex, age, and caste effects. Since data on socioeconomic and nutritional covariates were available for a subset of families, we repeated the genetic analyses using this subset, which has yielded higher heritabilities ranging from 0.21 ± 0.16 (head breadth) to 0.72 ± 0.18 (nasal breadth). In general, craniofacial measurements exhibited higher h 2 compared to linear measures. Breadth measurements and circumferences yielded more or less similar heritabilities. Age and sex effects were significant ( p < 0.0001) for most of the traits, while the effects of caste, socioeconomic status, and nutritional status were inconsistent across the traits. In conclusion, anthropometric phenotypes examined in this study are under appreciable additive genetic influences.Anthropometric phenotypes have been used to study the genetic structure of human populations (Relethford and Lees 1982;

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Section: Discussionsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 54%

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Heritability of Anthropometric Phenotypes in Caste Populations of Visakhapatnam, India

Arya¹,

Duggirala²,

Comuzzie³

et al. 2002

Human Biology

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“…This raises the strong possibility that the first "genetic" factor is really a maternal one, effects of which decrease with age. However, recent studies on the subject indicate that head circumference transmissibility can be fitted into a simple polygenic model with no evidence of common sibiling environmental influence (Poosha et al, 1984). Body height and weight transmissibility are also consistent with the most parsimonious model of only polygenic inheritance (Byard et al, ,1985aMagnus, 1984, Mangnus et al, 19841, although some form of a common environment component for all three morphometriccharacters is probably also implicated (Byard et al, ,1985b.…”

Section: Principal Component Analysismentioning

confidence: 80%

Sibling similarity in development of covariation among physical traits in early childhood

Kobyliansky¹,

Livshits²,

Otremsky³

1987

American J Phys Anthropol

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We studied the sibling similarity in development of covariation among body size characters (body weight (W), body length (S) and head circumference (HC) in Tel Aviv infants from birth up to 2 years of age. We investigated the effects of parental geographic origin, profession, age, current residence, and of family size. Multiple regression analysis with "dummy" procedure established that none of these variables had any significant effect on the aforementioned anthropometric traits. The matrices of phenotypic and genetic correlations, based on sibling similarity data, among age-specific W, S, and HC (measured for 12 different ages) were subjected to principal component analysis in order to elucidate patterns over the age groups. The patterns of both analyses, phenotypic and genetic, were quite similar: one factor in each (first genetic and second phenotypic) had a high positive correlation with early, first 2-3 months of life, W, S, and HC. Three other extracted factors correlated strongly, each with late W, S, and HC, respectively. The results of additional principal component analyses of age-specific W, S, and HC matrices separately, indicate the possibility of existence of two genetic subsystems, the first determining early postnatal stages of human ontogeny, and the second, later phases of child development.

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“…Height, head length, head breadth, minimal frontal diameter, bizygomatic diameter, and head circumference were assessed. These measures have been shown to exhibit moderate to high heritabilities in several populations (Black, 1983;Devor, 1987;Poosha et al, 1984). Anthropometric variables were ageand sex-corrected using regression techniques and z-score standardization.…”

Section: Study Populationmentioning

confidence: 99%

Population structure of the Jirels: Patterns of mate choice

Williams‐Blangero

1990

American J Phys Anthropol

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The influence of mating practices on genetic structure has been an area of great interest for anthropologists. In this paper, the techniques of potential mates analysis are employed to explore the mating patterns observed among the Jirels, a tribal population of eastern Nepal. Genealogical, anthropometric, dermatoglyphic, and demographic data for members of seven Jirel villages are used. Potential mate pools for a sample of 268 females are enumerated by village. Age structure and the Jirel restriction against clan endogamy are found to severely limit the number of males who are potential mates for a given female. The mating structure of the population is illuminated by statistical analysis of the characteristics of 160 actual mate pairs and all corresponding potential mate pairs. Using this approach several general mate choice practices were verified: 1) biological kin tend to be avoided as mates, 2) members of the same clan are excluded as potential mates, 3) mate exchange between clans is nonrandom, 4) individuals similar in age tend to be selected as mates, and 5) mates are drawn from the natal village more often than random expectation. A multivariate phenotypic distance measure between individuals did not reveal any evidence for assortative mating for either anthropometric or dermatoglyphic characters.

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Family resemblance for cranio‐facial measurements in Velanti Brahmins from Andhra Pradesh, India

Cited by 26 publications

References 9 publications

Heritability of Anthropometric Phenotypes in Caste Populations of Visakhapatnam, India

Heritability of Anthropometric Phenotypes in Caste Populations of Visakhapatnam, India

Sibling similarity in development of covariation among physical traits in early childhood

Population structure of the Jirels: Patterns of mate choice

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