Likewise, to form a male, we have to have the sperm cell that is carrying the Y chromosome as shown here, combined with the Xcel. So this is our Xcel that is also carry or is carrying that X chromosome as in this case because once again, the XL always carries the x chromosome. And so when they combine, we now have this X chromosome and the Y chromosome in the Zygote. And so eventually, this Zygote will develop into a male individual. So we see that because there is a 50% chance of forming a sperm cell that is carrying the X chromosome, so we have 0.5 chance of that taking place, and we have 100% chance of the Xcel forming the X chromosome. So that is equivalent to 1.0.