Or we can have lowercase g combined with uppercase T to form gamete number three. And finally lowercase g combined with lowercase T to form gamete number four. So we see that if we take two of these different f one generation offspring and we cross them together, there are four possibilities for the gametes. And so together we'll have 16 possibilities for the offspring. And to see why that is, so let's take a look at the following dihybrid cross, Punnett square so let's begin. Let's suppose that this column represents the column that describes the four possibilities for the gamuts of parent number one.