Werewolf genetics?

Does it exists?

I've had sims bitten, the same sims in different saves bitten by the same sims (don't ask me why lol), but they turn out different every time. With one of the preset colours for the fur.

I was really hoping they would turn out something akin to what the biter looks like. Although I guess the vamps are the same when it comes to bites and they just get a random look.

I'm assuming they look random as well when they are born a werewolf and age up? I have a toddler born to Greg so I have yet to see what she looks like, but I'm pretty sure she will just be random too I guess :#