This example includes three lineages that were established but became extinct before the end of the observation period. This diagram is an example of a simple phylogenetic tree.

The Tree Diagram encompasses the idea that natural selection explains common descent and the origin of organic diversity, thus representing a comprehensive model of Darwin's theory on the origin of ...

He included a tree-like diagram in the book to illustrate his concept of how species evolved over time. In neither of these two pictures did Darwin actually use the names of real species.

Example Choice Tree How to describe this image: In the past, a student may have encountered a description such as this. Answer Choice A. Tree Diagram B. There are two drink choices, tea and coffee, ...