Why is Understanding Heredity Important?

Understanding heredity is important because it's a way to find out your attributes, and possibly your ansestors. You probably look like your parents, right? If not, your adopted, or you have their recessive traits. Thats heredity. Heredity means "the passing of traits from the parents to offspring" So you could either inherit a dominant or recessive trait. If your mom had brown eyes and that was her dominant, and your dad's recessive trait was yellow, you would get brown because thats the dominant trait.

You can find more info about heredity here.