centi-. a combining form meaning âhundredthâ or âhundredâ: centiliter; centimeter; centipede.
An egg is an animal reproductive body that is spherical or ellipsoidal in shape. Inside the egg is the fertilized ovum that grows and develops as an embryo. It is produced and released outside of the animal body by fish, birds, snakes, insects, turtles, and other animals.
The answer, they say, is the chicken. Researchers found that the formation of egg shells relies on a protein found only in a chicken's ovaries. Scientists have discovered that eggs can only have been laid by chickens, thus solving the puzzle. Therefore, an egg can exist only if it has been inside a chicken. The protein-called ovocledidin-17, or OC-17 - acts as a catalyst to speed up the development of the shell. This hard shell is essential to house the yolk and its protective fluids while the chick develops inside.