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Digit ratios predict polygyny in early apes, Ardipithecus , Neanderthals and early modern humans but not in Australopithecus

3 Nov 2010

Abstract excerpt

Social behaviour of fossil hominoid species is notoriously difficult to predict owing to difficulties in estimating body size dimorphism from fragmentary remains and, in hominins, low canine size dimorphism. Recent studies have shown that the second-to-fourth digit ratio (2D : 4D), a putative biomarker for prenatal androgen effects (PAEs), covaries with intra-sexual competition and social systems across...

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PMID: 21047863
DOI: 10.1098/rspb.2010.1740

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