<P><em>Biological Systematics: Principles and Applications</em> draws equally from examples in botany and zoology to provide a modern account of cladistic principles and techniques. It is a core systematics textbook with a focus on parsimony-based approaches for students and biologists interested in systematics and comparative biology.</p><P>In this new and thoroughly revised edition, Randall T. Schuh and Andrew V. Z. Brower cover a wide range of topics: the history and philosophy of systematics and nomenclature; the mechanics and methods of analysis and evaluation of results; the practical applications of results and wider relevance within biological classification, biogeography, adaptation and coevolution, biodiversity, and conservation; and new software applications.</p><P>Updated to reflect the exponential growth in the use of DNA sequence data in systematics, the second edition of <em>Biological Systematics</em> features new data techniques and a notable increase in the number of examples from molecular systematics that will be of interest to students increasingly involved in molecular and genetic work.</p>