Here's how they work:
* Paired statements: Each step in a dichotomous key presents two contrasting statements (a "couplet") about a specific characteristic of the organism.
* Choice selection: You choose the statement that best describes your organism.
* Branching: The chosen statement leads you to the next couplet in the key, narrowing down the possibilities.
* Identification: You continue following the branching path until you reach a final statement that identifies the organism.
Example:
1. a. The organism has wings. Go to 2.
b. The organism does not have wings. Go to 4.
2. a. The wings are covered in scales. Go to 3.
b. The wings are covered in feathers. This is a bird.
3. a. The organism has a long, thin beak. This is a hummingbird.
b. The organism has a short, stout beak. This is a sparrow.
Let me know if you would like another example, or would like to explore how to create your own dichotomous key!
