Final answer:
The incorrect quality measure of eggs is C. Ounces per egg, as egg quality is evaluated based on factors like yolk and albumen appearance, not size or weight.
Step-by-step explanation:
The quality measure of eggs that is not valid is C. Ounces per egg. Egg quality is typically assessed based on factors related to the appearance and condition of various parts of the egg. These factors include yolk appearance, which assesses the color and shape of the yolk; albumen appearance, which pertains to the clarity and thickness of the egg white; and shell appearance, which examines the cleanliness, texture, and integrity of the shell. However, ounces per egg is not commonly used as a measure of egg quality but rather as a measure of size or class of the egg. Understanding egg quality is crucial when studying embryological development, such as the process of cleavage, which explains how the concentration of yolk affects whether total or partial cleavage occurs in eggs.