Non-metric variation of the skull in samples of four Indian populations

Kaul, Sunaina; Anand, Vivek; Corruccini, Robert S.

doi:10.1016/0047-2484(79)90070-8

Cited by 20 publications

(13 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The hard bony parts of the body wash ashore where they may be collected. The source, ethnic background, and other details of the material are given elsewhere (Anand, 1975;Kaul et al, 1979). In the absence of authentic background information and with the poor state of preservation of the material, determination of sex of the mandibles (and skulls) is difficult.…”

Section: Methodsmentioning

confidence: 99%

The mylohyoid bridge in four population samples from India, with observations on its suitability as a genetic marker

Kaul

Pathak

1984

American J Phys Anthropol

View full text Add to dashboard Cite

Four adult skeletal samples from the states of Uttar Pradesh, Andhra Pradesh, and Bihar in India have been studied for the incidence of mylohyoid bridge. The incidence, varying between 2.98% and 7.14%, has been compared with frequencies reported for other populations of the world. The range of variation for Indians, as a whole, falls within the lower levels of the spectrum of worldwide variation for this trait, ranging between 0.47% for French Europeans and 33.8% observed among Plains American Indians. While noting its possible significance for clinical purposes, the suitability of the mylohyoid bridge as a population genetic marker has been discussed. It is emphasized that its use as a genetic marker in isolation of other discrete traits has serious limitations. For meaningful population definition and relationships as many discrete variants as possible ought to be utilized.

show abstract

Section: Methodsmentioning

confidence: 99%

The mylohyoid bridge in four population samples from India, with observations on its suitability as a genetic marker

Kaul

Pathak

1984

American J Phys Anthropol

View full text Add to dashboard Cite

show abstract

“…Corruccini (1974) argued that cranial nonmetric traits could yield conflicting patterns of population affinity compared to other types of data because evolutionary processes could potentially affect metric and nonmetric characters differently. Nonmetric traits should form one part of a multifaceted approach to data collection, so that several lines of evidence can be used in the interpretation of a population's history (Kaul et al 1979). Subsequent work (Cheverud et al 1979;Corruccini 1976) showed that like craniometric data, nonmetric traits have an underlying continuous distribution, probably as a result of a shared developmental pathway (Richtsmeier et al 1984), and could be described using a multifactorial threshold model (Falconer 1965;Fraser 1976).…”

mentioning

confidence: 99%

Maximum-Likelihood Variance Components Analysis of Heritabilities of Cranial Nonmetric Traits

Carson¹

2006

Human Biology

View full text Add to dashboard Cite

Nonmetric traits of the cranium are often used to support hypotheses of the history and divergence of human populations. These studies rely on the assumption that nonmetric traits are heritable, yet few skeletal series exist with associated pedigree information that allow for the calculation of additive genetic variance, or heritability. In addition, traits for which heritabilities have been published represent dichotomous present/absent forms instead of the range of expression that can be observed for many nonmetric characters. In the present study I use a maximum-likelihood variance components analysis to calculate univariate narrow-sense heritability estimates on the skeletal series from Hallstatt, Austria, for 9 sutural bones, 27 multilevel traits, and dichotomized present/absent forms for 19 of these multilevel characters. Most of the trait heritabilities do not differ significantly from a model of h2 = 0, and they have large standard errors. In a heuristic comparison of multilevel versus dichotomous trait forms, most of the nonmetric characters showed no differences in heritability between the two methods used for parsing the phenotypic variation, although where differences were noted, the presence-absence version had higher heritabilities. These results have implications not only for the use of particular nonmetric traits in population studies but also for the practice of character dichotomization in data collection.

show abstract

“…Shima (1941) reported the incidence of the jugular foramen bridging in Mongols, and Morita (1950) and Mitsuhashi (1958) the incidence of this trait in Japanese. Recently a number of anthropologists have listed jugular foramen bridging as one of the minor nonmetric cranial variants for population studies (Corruccini, 1974; Kaul et al, 1979;Milne et al, 1983;Pardoe, 1984). However, except for Pardoe (1984), the above-mentioned researchers never gave a definition of the bony bridging of the jugular foramen.…”

mentioning

confidence: 99%

A population study of the jugular foramen bridging of the human cranium

Dodo

1986

American J Phys Anthropol

View full text Add to dashboard Cite

The author previously proposed a simple standard for diagnosing the jugular foramen bridging in man. The incidence of this bridging trait was investigated according to that standard in nine cranial series of East Indians, Micronesians, Japanese, Ainu, Mongols, Aleuts, Alaskan Eskimos, Canadian Eskimos, and Ontario Iroquois. No sex difference in incidence of the trait was recognized. Side difference in trait incidence was also slight but was statistically significant in the combined series of all the population samples examined. The bridging trait occurred more frequently on the right side than on the left side. Occurrences of the bridging trait were definitely associated between sides. Incidence of the trait was less in East Indians, Ontario Iroquois, and Micronesians, but greater in Alaskan Eskimos and Canadian Eskimos, the incidences in Japanese, Ainu, Aleuts, and Mongols being intermediate. The differences in trait incidence among the nine population samples were considered to reflect the differences in genetic compositions of these specific populations.

show abstract

Non-metric variation of the skull in samples of four Indian populations

Cited by 20 publications

References 1 publication

The mylohyoid bridge in four population samples from India, with observations on its suitability as a genetic marker

The mylohyoid bridge in four population samples from India, with observations on its suitability as a genetic marker

Maximum-Likelihood Variance Components Analysis of Heritabilities of Cranial Nonmetric Traits

A population study of the jugular foramen bridging of the human cranium

Contact Info

Product

Resources

About