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.
You may be able to see the chick moving about inside of the egg as it grows larger. You should candle all of the eggs on day 5 and again on day 10 of incubation, to see if the eggs have developed further or if any embryos have died within the egg. If the eggs are still viable on day 10, you should see darkness (the chick) covering most of the inside of the egg. Infertile egg Fertile egg Fertile egg. Infertile or clear eggs will appear empty except for a yellow yolk and the air pocket.