Genetic basis of human female pelvic morphology: a twin study

American Journal of Physical Anthropology
Krishan Sharma

Abstract

To examine the relative role of genetic and environmental factors on pelvic morphology, data on 60 pairs of female twins (30 monozygotic (MZ) and 30 dizygotic (DZ)) were analyzed. Fourteen pelvic measurements were normally distributed, and two were not. Association of twin type with the mean value of a trait was found in only 1 out of 8 traits. Heterogeneity of variance between zygosities was observed in 4 pelvic traits (50%), invalidating within-pair estimates of genetic variance for these traits. Evidence of stronger environmental covariance for MZ than DZ twins was observed for only one trait (sitting height iliocristale). A significant genetic component of variation was observed for age at menarche and in the pelvic area. In instances where inequality of variances between zygosities was demonstrated, total among-pair and within-pair mean squares were larger for dizygotic than for monozygotic twins. This is interpreted as evidence of greater environmental influence between zygosities. Environmental modification was not of the same magnitude in various pelvic traits. Bitrochanteric breadth had the highest magnitude of cultural heritability, indicating that cultural factors played an important role in determining hip breadth.

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Citations

May 9, 2012·Proceedings of the National Academy of Sciences of the United States of America·Rong YuanBeverly Paigen
Jun 10, 2010·Menopause : the Journal of the North American Menopause Society·Yan LuVolodymyr Dvornyk
Sep 21, 2013·Menopause : the Journal of the North American Menopause Society·Jung-A PyunKyuBum Kwack
Dec 3, 2014·Homo : internationale Zeitschrift für die vergleichende Forschung am Menschen·Krishan Sharma
Nov 10, 2012·American Journal of Physical Anthropology·Jonathan C K WellsJay T Stock
Apr 23, 2015·Proceedings of the National Academy of Sciences of the United States of America·Barbara Fischer, Philipp Mitteroecker
May 23, 2012·Molecular and Cellular Endocrinology·Chunyan He, Joanne M Murabito
Oct 8, 2014·The Journal of Adolescent Health : Official Publication of the Society for Adolescent Medicine·Wanzhu TuChunyan He
Nov 23, 2019·American Journal of Human Biology : the Official Journal of the Human Biology Council·Meghan K ShirleyJonathan C K Wells
Mar 5, 2009·The American Journal of Forensic Medicine and Pathology·Kewal Krishan
Dec 9, 2016·Proceedings of the National Academy of Sciences of the United States of America·Philipp MitteroeckerMihaela Pavlicev
Oct 29, 2017·Proceedings of the National Academy of Sciences of the United States of America·Philipp MitteroeckerMihaela Pavlicev
Sep 17, 2021·American Journal of Physical Anthropology·Samantha L Cox
Oct 13, 2021·BMC Biology·Ekaterina StansfieldPhilipp Mitteroecker

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