MISSION 1 — Training Trees
It's time to learn some tree basics and to get an overview for how the Build A Tree game works. Each level of the game tasks you with building a phylogenetic tree—a small piece of the overall tree of life. A phylogenetic tree is a model of evolutionary relationships.
Watch the video and answer questions 1–5 below.
| Keyboard Shortcut | Action |
|---|---|
| Space | Pause/Play video playback |
| Enter | Pause/Play video playback |
| m | Mute/Unmute video volume |
| Up and Down arrows | Increase and decrease volume by 10% |
| Right and Left arrows | Seek forward or backward by 5 seconds |
| 0-9 | Fast seek to x% of the video. |
| f | Enter or exit fullscreen. (Note: To exit fullscreen in flash press the Esc key. |
| c | Press c to toggle captions on or off |
1-3. Use the tree to the right to answer questions 1-3 by clicking the button below. Click on the tree to open the image in a new window so that you can view it while answering the quiz questions.
4. Which traits do A and B share in the tree above? Which traits do B and C share?
5. There is more than one correct way to show relationships using a phylogenetic tree. Which of these trees shows the same exact relationships as the tree above?
