You’ve heard it before. Look at your dad's head. Look at your grandfather's hair. This is the indication of what your hair is going to be like when you get older. It may seem like a logical assumption. Why wouldn't every man believe that his hair patterns would come from his father? And, for women, it may seem logical that what happens on the female side of their family is where it will go as you age. Yet, there is information that indicates that it may actually be the mother's side of the family that plays a role in what your hair will look like in 20, 30, or more years.