So we have lowercase g, lower case g, and we have lowercase T, lowercase T. So these are the 16 different possibilities of the genotype for the offspring when these two mate with themselves. So we have one of these mates with itself. So each one of these produces four types of gametes. And so we have four gametes here, four gametes here from the two different parents, and when they mate, when they fuse to form the Zygote, these are the 16 possibilities for the genotype of our Zygote. Now, the next question is what are the four types of phenotypes of these individuals produced here? So, we can either have green and tall we can either have green and short, we can have yellow and tall, or we can have yellow and short.