Genetic Epidemiology, Translational Neurogenomics, Psychiatric Genetics and Statistical Genetics Laboratories investigate the pattern of disease in families, particularly identical and non-identical twins, to assess the relative importance of genes and environment in a variety of important health problems.
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PMID
16688484
TITLE
Population differences in finger-length ratios: ethnicity or latitude?
ABSTRACT
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.
DATE PUBLISHED
2006 Dec
HISTORY
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
AUTHORS
NAME COLLECTIVENAME LASTNAME FORENAME INITIALS AFFILIATION AFFILIATIONINFO
Loehlin JC Loehlin John C JC Department of Psychology, University of Texas, Austin, Texas 78712-0187, USA. loehlin@psy.utexas.edu
McFadden D McFadden Dennis D
Medland SE Medland Sarah E SE
Martin NG Martin Nicholas G NG
INVESTIGATORS
JOURNAL
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
MEDLINE JOURNAL
MEDLINETA: Arch Sex Behav
COUNTRY: United States
ISSNLINKING: 0004-0002
NLMUNIQUEID: 1273516
PUBLICATION TYPE
PUBLICATIONTYPE TEXT
Comparative Study
Journal Article
COMMENTS AND CORRECTIONS
REFTYPE REFSOURCE REFPMID NOTE
CommentIn Arch Sex Behav. 2007 Apr;36(2):139-41; author reply 143 17333323
CommentIn Arch Sex Behav. 2009 Feb;38(1):1-3 18931900
GRANTS
GENERAL NOTE
KEYWORDS
MESH HEADINGS
DESCRIPTORNAME QUALIFIERNAME
Adolescent
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
SUPPLEMENTARY MESH
GENE SYMBOLS
CHEMICALS
REGISTRYNUMBER NAMEOFSUBSTANCE
3XMK78S47O Testosterone
OTHER ID's