Heredity is the passing on of genetic
characteristics of one species through the generations. An individual's genetic information is contained in their gene cells
. When an egg is fertilized, a spermatozoa comes into contact with an ovum, each containing all the genetic characteristics of the man and woman, combining to create a new individual who will possess the hereditary characteristics of his or her parents, such as hair color, facial shape, or even diseases.
Published by Jeff
Latest update on November 19, 2013 at 11:00 AM by Jeff.