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Brief communication: Familial resemblance in digit ratio (2D:4D)

15 Jun 2009

Abstract excerpt

Familial resemblance in the second-to-fourth digit ratio (2D:4D), a proxy for prenatal androgen action, was studied in 1,260 individuals from 235 Austrian families. In agreement with findings from twin studies of 2D:4D, heritability estimates based on parent-child and full-sib dyad similarity indicated substantial genetic contributions to trait expression (57% for right hand, 48% for left hand 2D:4D). Because...

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PMID: 19530144
DOI: 10.1002/ajpa.21105

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