Universal and Eukaryote Phylogenetic Trees Based on 16s rDNA

Mitchell L. Sogin
Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window

Universal and Eukaryote Phylogenetic Trees. Structural similarites for 900 sites that can be unambiguously aligned in a data set of more than 800 eukaryotes and 100 prokaryotes were computed and converted to evolutionary distances using the Kimura two parameter model. The Neighbor-Joining method was used to infer the unrooted universal phylogeny shown in A. A similar computation was used to infer an unrooted phylogeny in B for diverse eukaryotes but this analysis is based upon comparisons of 1200 positions that can be unambiguously aligned. Evolutionary distances in these trees are proportional to length of line segments separating taxa.

About This Page

Mitchell L. Sogin
Marine Biological Laboratory, Woods Hole, Massachusetts, USA

All Rights Reserved.

close box

This page is a note that is attached to a branch of the Tree of Life.

ToL notes provide brief accounts of characteristics, short summaries, commentaries, media files, taxonomic information, or identification tools for a given group of organisms.

For a more detailed explanation of the different ToL page types, have a look at the Structure of the Tree of Life page.

close box


Page Content

articles & notes




Explore Other Groups

random page

  go to the Tree of Life home page