So let's suppose the normal female individual produced these abnormal gametes as a result of nondisjunction. And now let's suppose this individual mates with a normal male individual that has normal sperm cells. So if a normal sperm cell that is carrying a Y chromosome fuses with cell number two, we're going to form a Zygote that contains three instead of two sex chromosomes. And because we're dealing with this abnormal X cell, we have two X chromosomes, two identical X chromosomes. And so because these two identical X chromosomes fuse with the sperm cell that contains the Y chromosome, we see that the genotype, the carriotype, will be XXY. And so this Zygold will eventually form an individual and that individual is said to have the XXY carriotype, which is also known as Clinfelter's syndrome.