Like Father Like Son

Zeus battling his father Cronos.
Taken from Google Images

Cronos overthrew his father Uranus.  Zeus overthrew his father Cronos.  Why do you suppose that sons defeating their fathers is such a major theme in mythology?  Why do you suppose that fathers are so afraid of giving up power to their sons? 

In what other stories, plays, or films have you seen this idea?  Let me tell you this - it is more common than you think!  Use your example and compare it to the stories of Uranus, Cronos, and Zeus for this journal prompt.  Use your genre sheet to come up with an original and fresh writing approach!