Phylogenetic trees are fractal in the sense that the same ... whereas external branches connect a tip and a node. A clade is a piece of a phylogeny that includes an ancestral lineage and all ...

A clade is also subtypes, genotypes, or groups that all arise from a common ancestor. These relationships can be tracked on her phylogenetic tree. In virology, viruses are placed in clades based ...

Of course, as phylogenetic trees branch, different lineages accumulate different traits. Figure 3 illustrates this idea using a clade that contains four lizard species. You can see that the ...