And this is not consistent. It does not work with the pedigree that we have because this individual, which is a male, has a normal phenotype. And we see that by making this assumption that is impossible. And so what that means is this initial assumption that our disease is sex link recessive does not actually work. So now we eliminated the fact that our disease is sex link recessive, so it cannot be sex link recessive. Now let's now assume that it is.