Exploring evolutionary patterns in data
Phylogenetic trees can tell us about more than just the hierarchical order of our dataset. Taken together the position of internal nodes, the number of edges descending from a node and the edge lengths in the tree can be very Continue Reading …
Rooted trees A rooted tree is a tree diagram where the branches are ordered descending from a ‘root point’ The root is the oldest part of the tree and tells us the direction of evolution, with the flow of information Continue Reading …
A phylogenetic tree or phylogeny shows evolutionary descent from a common ancestor. The tree is built by aligning DNA sequences and using an evolutionary model alongside a tree building method to cluster the sequences based on evolutionary distance (a measure Continue Reading …
There are four types of tree diagrams or ‘dendrograms‘: Fundamentally they all display hierarchical relationships through branching order where each branch is split into two more branches. The point at which each branch splits in two is called a node. Continue Reading …