So this individual is Xbxb and this individual is X lowercase by because we're dealing with a male. Now this individual must be X uppercase B and Y lowerc or just Y, because if this was lowercase B, this would be an abnormal individual that expresses that disease. So now, by assuming that these are the genotypes of these two individuals, let's see what we produce for our offspring. So let's use the punant square. So we have our male individual, the gametes of the male individual. And now we have the gametes of the female individual.