So let's suppose that this is the female XLS right here. So these are the female XLS. Let's suppose that these right here are the male sperm cells. Okay? And so in the process of meiosis, when these segregate and at the end we form our haploid sperm cells, one sperm cell type will contain the X chromosome with the lowercase C, the red C. So let's suppose this is our X chromosome and the other sperm cell will simply contain the Y. So now let's actually carry out the Punnett square.