And so the separation of these two genes, these two alleles. So we have uppercase T goes into this gamete, and we have the lowercase T goes into this gamete. And the same thing is true for our genotype T lowercase T, lowercase T. Now we actually cross them. So if this Xcel combines with this sex cell, they form a Zygo that will be uppercase T, lowercase T. So we have uppercase T, and we have lowercase T. Now, what about if this crosses with this? So, once again we have the same exact situation. We have an uppercase T combines with the lowercase T, and this will be the genotype of our Zygote.