Does the umbilical cord hold yolk in place inside of egg?

Here's a breakdown:

* Umbilical cord: This is a structure found in mammals, connecting the developing fetus to the placenta. It provides nutrients and oxygen and removes waste products.

* Egg yolk: This is a nutrient-rich component of an egg that provides food for the developing chick.

* Egg structure: Inside the egg, the yolk is held in place by the chalazae, two twisted cords of protein that stretch from the yolk to the inner membrane of the shell. These cords act as "suspenders" keeping the yolk centered.

Therefore, the umbilical cord plays no role in egg structure or yolk placement.