So let's cross these two heterozygous individuals. So we have upper case B, lowercase B, uppercase B, lowercase B. We produce uppercase b, uppercase b, uppercase b, lowercase b, uppercase b, lowercase b and uppercase b. Or uppercase, I should say lowercase b, lowercase b. So this also is consistent because we have this possibility that one of the offspring will have a phenotype that expresses that particular disease. So that must mean this individual is lowercase B, lower case B.