PMID |
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TITLE |
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Population differences in finger-length ratios: ethnicity or latitude? |
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ABSTRACT |
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The relative length of the second and fourth fingers (the 2D:4D ratio) has been taken to be an indicator of prenatal exposure to testosterone, and hence possibly relevant to sexual orientation and other sex-differentiated behaviors. Studies have reported a difference in this ratio between Caucasian males in Britain and in the U.S.: higher average 2D:4D ratios were obtained in Britain. This raises the question of whether differences among different Caucasian gene pools were responsible or whether some environmental variable associated with latitude might be involved (e.g., exposure to sunlight or different day-length patterns). This question was explored by examining 2D:4D ratios for an Australian adolescent sample. The Australians were predominantly of British ancestry, but lived at distances from the equator more like those of the U.S. studies. The Australian 2D:4D ratios resembled those in Britain rather than those in the U.S., tending to exclude hypotheses related to latitude and making differences in gene pools a plausible explanation. |
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DATE PUBLISHED |
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HISTORY |
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PUBSTATUS |
PUBSTATUSDATE |
received |
2005/09/13 |
accepted |
2006/01/24 |
revised |
2006/01/24 |
pubmed |
2006/05/12 09:00 |
medline |
2007/04/12 09:00 |
entrez |
2006/05/12 09:00 |
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AUTHORS |
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NAME |
COLLECTIVENAME |
LASTNAME |
FORENAME |
INITIALS |
AFFILIATION |
AFFILIATIONINFO |
Loehlin JC |
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Loehlin |
John C |
JC |
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Department of Psychology, University of Texas, Austin, Texas 78712-0187, USA. loehlin@psy.utexas.edu |
McFadden D |
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McFadden |
Dennis |
D |
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Medland SE |
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Medland |
Sarah E |
SE |
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Martin NG |
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Martin |
Nicholas G |
NG |
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INVESTIGATORS |
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JOURNAL |
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VOLUME: 35 |
ISSUE: 6 |
TITLE: Archives of sexual behavior |
ISOABBREVIATION: Arch Sex Behav |
YEAR: 2006 |
MONTH: Dec |
DAY: |
MEDLINEDATE: |
SEASON: |
CITEDMEDIUM: Print |
ISSN: 0004-0002 |
ISSNTYPE: Print |
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MEDLINE JOURNAL |
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MEDLINETA: Arch Sex Behav |
COUNTRY: United States |
ISSNLINKING: 0004-0002 |
NLMUNIQUEID: 1273516 |
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PUBLICATION TYPE |
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PUBLICATIONTYPE TEXT |
Comparative Study |
Journal Article |
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COMMENTS AND CORRECTIONS |
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REFTYPE |
REFSOURCE |
REFPMID |
NOTE |
CommentIn |
Arch Sex Behav. 2007 Apr;36(2):139-41; author reply 143 |
17333323 |
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CommentIn |
Arch Sex Behav. 2009 Feb;38(1):1-3 |
18931900 |
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GRANTS |
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GENERAL NOTE |
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KEYWORDS |
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MESH HEADINGS |
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DESCRIPTORNAME |
QUALIFIERNAME |
Adolescent |
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Australia |
epidemiology |
Female |
epidemiology |
Fingers |
anatomy & histology |
Heterosexuality |
statistics & numerical data |
Homosexuality, Female |
statistics & numerical data |
Homosexuality, Male |
statistics & numerical data |
Humans |
statistics & numerical data |
Male |
statistics & numerical data |
Organ Size |
statistics & numerical data |
Reference Values |
statistics & numerical data |
Sex Characteristics |
statistics & numerical data |
Testosterone |
physiology |
United Kingdom |
ethnology |
United States |
ethnology |
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SUPPLEMENTARY MESH |
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GENE SYMBOLS |
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CHEMICALS |
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REGISTRYNUMBER |
NAMEOFSUBSTANCE |
3XMK78S47O |
Testosterone |
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OTHER ID's |
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