Microbiology: A Systems Approach 4th Edition by Marjorie Kelly Cowan

Exercise 26

Critical thinking is the ability to reason and solve problems using facts and concepts. These questions can be approached from a number of angles and, in most cases, they do not have a single correct answer.
Compare and contrast the Woese-Fox system with the Whittaker system of classification, discussing how genetic analysis provided information leading to the identification of a third cell lineage.