I've looked all over, and have probably just missed this in-game.  Is there a way to tell who the parents of a baby is?  I have a family set up that I was working with for a day or two and then I switched to another family for a couple days.  I came back to the first family having a new baby.  Of the 3 adults in the family, only one is a parent.

I remember in Sims 2 there was a family tree type of thing but I can't seem to find anything like that.  Am I just blind or is it not there anymore?