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A family study of anthropometric traits in a Punjabi community: I. Introduction and familial correlations
Author(s) -
Sharma K.,
Byard P. J.,
Russell J. M.,
Rao D. C.
Publication year - 1984
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.1330630406
Subject(s) - sibling , anthropometry , heritability , demography , nuclear family , singleton , correlation , twin study , dizygotic twins , psychology , medicine , developmental psychology , biology , genetics , pregnancy , obstetrics , geometry , mathematics , sociology , anthropology
Data on 40 anthropometric measurements from 144 nuclear families in Chandigarh, India, are presented. Most families contain a pair of monozygotic or dizygotic twins, one or more singleton siblings, and their parents. Familial correlations for age‐sex standardized, normalized measurements are estimated by maximum likelihood for marital, parent‐child, sibling, and twin pairs. Heterogeneity tests for sex‐specific subtype correlations (male‐male, male‐female, female‐female) indicate that the sex of the relative plays no significant role in the magnitude of the familial correlations except for maternal effects and differences among male and female twin pairs for a few of the variables. Marital correlations are high for body measurements, but not for head or face variables. Twin correlations seem to indicate a higher level of heritability than correlations from other family members.