Familial digit ratio (2D:4D) associations in a general population sample from Wales

Gareth Richards, W Bellin & W Davies
Background The relative length of the second and fourth fingers (2D:4D) may be a sex-linked correlate of prenatal androgen exposure. However, the nature of the sex-linkage is controversial, with evidence for both X- and Y-linkage of the 2D:4D phenotype. Aims To examine transgenerational effects relating to sex-linkage. In addition, assortative mating on 2D:4D was considered, as well as associations between 2D:4D and age and sex. Study design A family study was conducted. Parents and offspring...
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