Skip Broke

Skip Broke was the husband of Brandi Broke, and fathered her three sons, one of which she is pregnant with at the beginning of the game. He died in a pool ladder accident (this is an in-game joke as taking away the pool ladder while a Sim was in the pool was the most common way to intentionally kill a character). The unborn child always lacks his genes, making it a male version of Brandi. This is because the game chooses the genes at the moment of birth, hence the lag when a baby is born. However, pairing Brandi with someone who has blond hair does not produce blond children like Dustin and Beau, meaning she didn't have a blonde gene for either boy to inherit.