It is necessary to know how physical characteristics and traits are passed from a parent to its offspring. Furthermore, heredity provides a lot of insight into how genetics play a significant role in organisms. Evolution is a gradual process where an organism changes and adapts too many variables. Sometimes, it is driven by the environment or competition. The Rules for the Inheritance of Traits in human beings relate to the fact that both the father and the mother contribute practically equal amounts of genetic material to the child. It means that both paternal and maternal DNA can influence each trait.