Family Tree had the potential to be a very enjoyable book, unfortunately it didn't do it for me.
Hugh comes from a well-to-do society family, while Dana was raised by her grandmother and never knew her father. Their first child is born with African-American features. Questions are raised, including an accusation that Dana slept with their African-American neighbor.
There was a lot of set-up for some deep ethical and moral discussion and instead I felt like half the characters were too whiny and accusatory to fit the situation.