Alright... I tested it... it doesn't work.
I know there are cheats that could give the trait. I just wanted to see if a family tree could be set up for it from the start
This may sound naive, but how to you set up a family tree for a sim you've just created?
when you create your sim family in CAS, you can note how they are related. With that in mind, you can create a whole family line. With my test I created a grandfather, father, and daughter. I took the adult father, and had them designated the elder as their father, and the young adult as their daughter.
