Chapter 28.5, Problem 3CC

Summary Introduction

To determine: A eukaryotic phylogenetic tree which indicates that the tree's root would lie between a clade of excavates, unikonts, and various other eukaryotes.

Concept introduction: A phylogenetic tree basically depicts the extinction and branching of species and their ancestors through time. In the biology of evolution, "relationship" is a word that has a specific meaning and is a key for using and understanding the 'Tree of Life'. Phylogenetic trees are the evolutionary trees that come with various successive events of branching (speciation). Here, a single species gives rise to two other species.