Anonymous ID: 2b137c May 21, 2018, 5:13 p.m. No.1498733   🗄️.is 🔗kun   >>8800

>>1498662

Why men's ring fingers are longer than their index fingers: Male-female ring finger proportions tied to sex hormones in embryo

 

https:// www.sciencedaily.com/releases/2011/09/110905160922.htm