Echoing what everyone else said, your hair might change with age (mine totally did, but that was when I was younger), but it's quite possible that you have different hair than your dad...in fact, you probably do. But not to worry, your hair is (or will be) awesome in it's own way!
3b/c...or thereabouts.

Album: http://photobucket.com/albums/a119/CrazyCurlyQ/

Password: curlomania
(albums are on the lefthand side)