The First Allometric Analysis in Newborns Rejects the Allometry Hypothesis for <scp>2D</scp> : <scp>4D</scp> : Strong Developmental Evidence for Prenatal Hormonal Programming

The findings provide evidence for sexual dimorphism in 2D:4D in Turkish neonates. In this respect, the sex difference appears to be independent of the absolute length of the fourth digit, providing developmental evidence that is inconsistent with the allometry hypothesis and supporting the premise that 2D:4D dimorphism is likely related to prenatal hormonal programming rather than simple differential growth.