aposthia

Aposthia is a rare congenital condition in humans, in which the foreskin of the penis is missing.

Toward the end of the nineteenth century, E. S. Talbot claimed that aposthia among Jews was evidence for the old notion of Lamarckian inheritance. In his work The Variation of Animals and Plants Under Domestication, Charles Darwin also mentioned cases of "born circumcised" babies as "conclusive evidence" for the now-discredited blending inheritance. Because hypospadias is a much more common condition, it is likely that those reported cases were not actually aposthia.