Chapter 18.1, Problem 3TQ

Summary Introduction

To review:

Groups that have a common structure as well as physiology.

Introduction:

A group of organisms that diverged early from other bacteria sharing a common ancestor is referred to as a phylum. Deep-branching taxa are those ancestries whose genome sequences diverged early, at or before the well-known phyla. On the basis of historical convention and consensus of the research community, phyla and other major divisions are defined. Archaea, Bacteria, and Eukarya are the three groups of life forms. They are termed as domains.