3. How are Characteristics passed on

What makes you who you are?  How did you get your physical characteristics? The short answer is, it comes from you genetic makeup,  which is passed to you from the combination of your parents' genes.  In reality, we do not really know exactly how your genetic makeup and your environment effects your personality.  This section will look at both the genetic and environmental influences that appear to effect your physical and psychological makeup.

This tutorial is a good overview of heredity and traits. Â