As I understand it, the offspring that inherit whiteout genes from both parents (i.e. super whiteout) do not survive. The offspring that inherit the whiteout gene from one parent will be a whiteout and those that don't inherit the gene from either are wild type. Obviously, since you'll get the same results essentially by pairing a whiteout with a wild type without the deaths, it's better to do that.
Aliza
