But in this particular Punnett square, we see that is impossible because 100% of those females must be heterozygous and so they must express that disease, that phenotype, and that is inconsistent with this particular information. And so it cannot be sex link dominant. So he basically answered our question. Now we want to show that it could be autosomal dominant. So let's remove all these, all the scrap work that we did to basically show that it wasn't sex linked. And now we're going to follow the same exact step to show that it could be autosomal dominant.