They are normal phenotype, but they are carriers. So it's x uppercase b, x lowercase B, and that's consistent with this information. Finally, to fully show that our trade is sex link recessive, we have to ensure that when this individual mates with this individual, these are all possible. So let's take this individual here. So we have the sperm cells are x lowercase by and then we have x uppercase B, and then x lowercase B. So this here is our opponent square.