How To Read A Phylogenetic Tree | Introduction + 5 Exercises! скачать в хорошем качестве

How To Read A Phylogenetic Tree | Introduction + 5 Exercises!

Do you struggle to read and understand Phylogenetic trees? You are not alone! This video will break down how to read a phylogenetic tree, the differences between tips branches and nodes, what are phylogenies, how to find the most recent common ancestor, how to find all the descendants from an ancestor, sister groups, monophyletic, polyphyletic, and para phyletic groups, why birds are considered reptiles, what are clades, and some common mistakes when interpretation phylogenetic trees. 00:00 - Introduction 01:00 - What are phylogenies? 03:38 - Most Recent Common Ancestors 07:01 - Finding Descendants from a Node 08:03 - What are Sister Groups 10:08 - Monophyletic, Paraphyletic, and Polyphyletic groupings 10:38 - Monophyletic Groups Explained 11:40 - Paraphyletic Groups Explained 13:28 - Polyphyletic Groups Explained 14:26 - Example: Are Birds Reptiles? 15:00 - What are Clades? 16:40 - Okay but why are birds reptiles? 19:17 - Common Mistake: Phylogenies can rotate 26:11 - Common Mistake: Organisms at the end are not more advanced 30:55 - Exercise 1: Mono-, Para- ,and Polyphyletic Groups 34:20 - Exercise 2: Understanding Rotations on Phylogenies 39:27 - Exercise 3: Number of Tips, Nodes, and Branches 42:53 - Exercise 4: Most Recent Common Ancestor 45:22 - Exercise 5: How many monophyletic groups?