Phylogenies are a fundamental tool for organizing our knowledge of the biological diversity we observe on our planet. But how exactly do we understand and use these devices? Tree diagrams have ...

Moreover, phylogenetic trees serve as extremely powerful tools ... of you and your second cousins are your great-grandparents. Note that your parents are situated one generation ago, your ...

The same number of species (three blue circles) can have a very different phylogenetic diversity (the sum of the red branches on the tree connecting them) depending on how closely they are related.

This activity asks you to assume the role of an evolutionary biologist to determine the phylogenetic tree for several sets of four organisms. It illustrates how outward appearances alone can be ...