If I think. Because the offspring have then he also has a navel but not born but in create. If they do not have, their offspring do not have it. Heredity always follows like her parents. An example of a goat having no umbilical cord? Please check the goat. I thought I saw a goat skin that made the drum do not look navel. Where the navel, when it is conceived and born, the goat does not spawn. Then the god is great and great from everything.