So we see that forming a female and a male are equally likely events. So this is 50% chance and this is 50% chance. Now, earlier when I mentioned when I introduced the X chromosome, I said that the X chromosome contains many genes that are involved in expressing proteins that basically are important in not only the female individual, but also the male individual. So the X chromosome contains many genes that are necessary for both genders. And that's exactly why both of these individuals, the female and the male, contain X chromosome. In the case of the female, we have two.