The attachment point of the umbilical cord in a baby girl is very close to where her own baby would develop. Is there something in the evolutionary history of mammals that explains this, or some anatomical constraint? Or is it just a coincidence?
I would say it is a coincidence because:
- the navel is in the same place in males, so if it was there for some evolutionary advantage the charachter would be sexually dymorphic, which clearly is not the case.
- I cannot think of any specific function of the navel that is related to pregnancy or delivery (or of a specific function of the navel at all for that matters)