Now, let's actually take a look at one of the first experiments that he conducted. So experiment number one in that experiment, mendel basically made it, he crossed two different true breeding plants for opposite or contrasting traits. So what do we mean by that? Well, let's choose any one of these traits. Let's suppose we choose the high trait. What he did was he took a true breeding for the tall trade and he made it a true breeding plant for the short trade.