We have a 25% chance that this individual is formed and a 25% chance that this individual is formed. And that's consistent with these individuals in the following pedigree. So that works as long as this is this individual right over here. Okay, now let's move on to this case. We have x uppercase B-Y-X lowercase b. X lowercase b. If we carry out the punning square, we'll see that these individuals do in fact work.