This is additive color. Red, green and blue are the primary colors of white light. All three colors will result in white, the absence of all three will produce black. When two primary colors of light are added together, you get a color that is brighter than either of its components.
The most obvious way is to put it in an incubator. and see if there is any growth. However, this is not the. most practical way when you are selling eggs for human. consumption. In that case, the best way to tell a fertile. egg is to examine the germ on the egg's yolk to see if. it has divided. The germ is also called the Blastoderm and is. where the baby chick begins to grow. The germ is. located on the surface of the yolk and appears as a light. spot.
Procedure. 1  The structure of an egg An egg is a reproductive cell from which a new organism develops. 2  This will occur only if the egg has been united with a male sperm cell (fertilized). 3  A chick will hatch from a fertile egg if the egg is incubated at 100.5 degrees F for 21 days.