Like a lot of evolutionary biologists not studying the root of the tree of life, I assumed the three domain hypothesis was fairly well supported by the research community. This model posits that the tree of life can be broken up into three taxa at its most basal level: eukaryotes, bacteria, and archaea. It’s the hypothesized evolutionary relationships of these taxa that caused researchers to break the tree of life into three domains.
It turns out the three domain model isn’t as supported as many of us assume. Larry Moran put me in my place, pointing out arguments against the three domain model. Not being familiar with this area of research and not having enough time to research it thoroughly, I asked if Dr. Moran would write up a review for those of still clinging to the three domain model. This was before he had a blog. Now he’s got a blog, and he’s started his review. Let’s see if he can convince us 3Dists that we’re wrong.