| Genetic and environmental influences on 2D:4D finger length ratios: a study of monozygotic and dizygotic male and female twins. | |
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MedLine Citation:
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PMID: 18074216 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Recent studies have shown significant sex differences in the pattern of 2D:4D finger length ratios in humans and several other mammalian species. In humans, these ratios are suggested to be negatively correlated with prenatal exposure to testosterone, positively correlated with prenatal estrogen, and exhibit sex specific patterns of association with sexually dimorphic clinical phenotypes. However, the relative contributions of genetic and environmental influences on digit ratios in men and women are currently unknown. Therefore, the purpose of the current study was to examine genetic and environmental influences on 2D:4D ratios in twins. Participants included 146 monozygotic (MZ) and 154 dizygotic (DZ) adult male and female twins participating in the Michigan State University Twin Study of Behavioral Adjustment and Development. Overall, biometric model-fitting analyses indicated significant additive genetic and nonshared environmental influences on digit ratios. Findings suggest greater similarity between 2D:4D ratios in MZ relative to DZ twins that can be accounted for by genetic and nonshared environmental factors. |
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Authors:
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Kyle L Gobrogge; S Marc Breedlove; Kelly L Klump |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Twin Study |
Journal Detail:
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Title: Archives of sexual behavior Volume: 37 ISSN: 0004-0002 ISO Abbreviation: Arch Sex Behav Publication Date: 2008 Feb |
Date Detail:
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Created Date: 2008-01-23 Completed Date: 2008-06-18 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 1273516 Medline TA: Arch Sex Behav Country: United States |
Other Details:
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Languages: eng Pagination: 112-8 Citation Subset: IM |
Affiliation:
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Department of Psychology, Florida State University, Tallahassee, FL, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Anthropometry Female Fingers / anatomy & histology Humans Male Models, Statistical Phenotype Pregnancy Prenatal Exposure Delayed Effects / genetics, physiopathology Sex Characteristics* Social Environment* Testosterone / physiology Twins, Dizygotic / genetics* Twins, Monozygotic / genetics* |
| Grant Support | |
ID/Acronym/Agency:
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NS 07437/NS/NINDS NIH HHS |
| Chemical | |
Reg. No./Substance:
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58-22-0/Testosterone |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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