Final Answer:
The rotation of the egg in the oviduct facilitates the proper development and placement of the embryo within the egg.
Step-by-step explanation:
The rotation of the egg in the oviduct is a crucial process in avian reproduction. As the egg travels through the oviduct, it undergoes a series of movements, including rotation. This rotation is essential for the even distribution of nutrients, albumen, and membranes around the developing embryo. Proper rotation ensures that the embryo is correctly aligned and positioned within the egg, allowing for uniform development.
The rotation also prevents the embryo from sticking to the inner shell membrane, facilitating the exchange of gases and nutrients. In summary, the rotation of the egg in the oviduct is a key factor in the successful development of a healthy embryo within the egg.