 So today's lab experiment or this week's lab experiment or activity is 100% geared toward helping you think through relatedness. And classification is something that humans are like, dude, we love classifying things. Often to our detriment, but we definitely like to take things and let's put them in piles. These guys all have this label and these guys all have this label and classifying critters, we're good at that. We do it a lot and often the classifications that we come up with also represent evolutionary relationships. So I want you, this first activity is about building keys that we use to identify critters. And the key that you're going to build is a dichotomous key. See that word down there that says dichotomous key. And the dichotomous key is the kind of key where you go through and you like look at, okay, you ask a question and you have two possible routes to an answer. You'll totally figure it out. You're going to have a set of critters and you're going to build a dichotomous key for those critters. Thinking about what do they have in common with each other and what characteristics distinguish them from each other. After you build your key, you're also going to build a tree that shows how those critters that you built the key for are actually related to each other. And that's the next piece that like, you're going to practice your tree thinking skills. The other thing that you're going to do, yeah, yeah, yeah, you're going to do that. You're going to have a whole section that is just working on trees. And working on trees, you're going to learn about a set of critters by working on the tree and that will be a good practice. So you're thinking about your trees and that's awesome, good practice. And then the last thing you're going to do is you're going to have a group of critters that look like this and you're going to build a cladogram for those critters, identifying characteristics that might put them in groups and possibly even ancestors that you might have. I just wanted you to see that the lab activity is tightly related to the conversation that we had. It's, you will get out of the lab activity what you put into it, and today's topic is truly foundational for the next five lectures, not just the ones on evolution, but also the ones on diversity and the different kinds of critters that we're going to be looking at. So please be disciplined in lab and make sure that you are rockin' the heezy. I, Doggy Pounds, it's been awesome. I'll catch you later.