This is the female. One of the male has to combine with one of the female to basically form that final product that final offspring, the f one generation. So let's suppose that the upper case t that is light purple mixes with the lowercase t that is red. So we have the mixing process take place and we form the following zygote. That eventually gives rise to this f one generation offspring. And so we have uppercase T, lowercase T. We basically have the following third case.