“In wheat, evidence was found that a barrier occurred in the chalaza, a small zone of cells between the maternal vascular tissue and the nucellus.”

“The chalaza in a duck egg is not as noticeable as it is in a chicken egg and the white is more transparent with less yellow coloring.”

“The fresher the egg, the more prominent the chalazas but when the egg is cooked, the chalaza is completely unnoticeable.”

“In addition, the layers of albumen act as a cushion to protect the embryo from jarring movements, while the chalazae help to maintain the orientation of the embryo within the egg.”

“Wait too long and the yolk will be off-center, as the white and chalazae deteriorate.”

“The chalazae suspend the yolk at the center of the egg with two strong bands that connect it to the shell.”