Introduction: Carving nature at its joints, or Why birds are not dinosaurs and men are not apes -- Part I. The Interrelationships of Organisms: 1. What this book is about -- 2. Classification -- Part ...

Phylogeny is the representation of the evolutionary history and relationships between groups of organisms. The results are represented in a phylogenetic tree that provides a visual output of ...

There have been many attempts to classify proteins into groups of related molecules in terms of their primary, secondary and tertiary structure. An overview of these classification schemes is ...