But we can also try, for example, autosomal dominant, okay? And we can basically determine if that actually works out. Now, if it's autosomal dominant, that means there are two possibilities of expressing Ara phenotype, where either uppercase B uppercase B, or where uppercase B lowercase B. And if we begin by assuming it's autosomal dominant, what that means is this individual here must either be uppercase B, uppercase B or uppercase B lowercase B. But this individual must be lowercase B lowercase B if we're assuming it's autosomal dominant. So remember, these two genotypes will express that phenotype for that disease, right?