Sleep = Dad?

Our latest discovery. Jackie looks most like her Dad when she's sleeping. Is it because he and she ever so much enjoy sleeping any time of day? Could it be that they share the ability to sleep through any loud noise around them? Is it because her little cheeks and lips scrunch together when she is blissfully dreaming? I've thought this since she was born and just today I've had two unbiased, non-family members say the same thing. What do you think?