Board Thread:General Discussion/@comment-200.104.67.134-20140324030927/@comment-3060460-20140328012400

Indeed it can, but not to that degree.

Light change in canon - The color of someone's hair

Medium change - Someone's age/number of children/being married/not being married to someone

Heavy change - If someone survived a life-death scenerio despite already being declared dead/changing someone's heritage.

By your logic Luke Skywalker should be Obiwan's kid because of how similar he is to Keinobi.