How to Make a Dichotomous Key | Biology Tutorial
Автор: Ms. Parrott Science
Загружено: 2020-02-11
Просмотров: 109651
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🌿 Ever wondered how scientists figure out what an unknown organism is? In this video, you’ll learn how to make a dichotomous key step by step!
We’ll explain what a dichotomous key is, the two main types (branched vs. numbered), and how to pick the right traits for sorting organisms. Then we’ll walk through a real example with insects and millipedes to show how the process works in practice. 🐞🔬
⏱️ Timestamps
0:00 Intro
0:03 What is a Dichotomous Key?
0:17 Branched vs. Numbered Keys Explained
1:00 Step 1: Setting Up Your Key
2:26 Step 2: Choosing Good Traits
4:11 Example with Carolina Tiger Beetle
5:06 Step 3: Using Broad Traits First
6:02 Step 4: Differentiating Insects by Features
7:01 Step 5: Continue Splitting Groups
7:55 Testing the Key with Examples
8:33 Final Tips for Accuracy and Peer Review
8:38 Conclusion
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