#TREE OF LIFE BIOLOGY SERIES#

Here are some examples of ToL leaf pages: The Vampire Squid, The Tailed Frog, The Salamanderfish of Western Australia, Bembidion levettei (a carabid beetle), Pelegrina aeneola (a jumping spider). ToL leaf pages are most often pages about individual species however, leaf pages are not defined by the rank of a given group rather, if a species is divided into subspecies, varieties, or strains, and if ToL authors decide to devote separate ToL pages to these subgroups, then the pages for the subspecies, varieties, or strains, would be the leaf pages. What this means is that the group of organisms that a leaf page is about is not further subdivided into independent genetic lineages or subgroups. Leaf Pages Leaf pages are ToL pages about the terminal groups, i.e., the tips, of the tree of life.

ToL leaf and branch pages are categorized according to four different page status levels based on their completeness and review status. Each of these pages provides a synopsis of the most important characteristics of a particular group of organisms. The structural backbone of the ToL project consists of leaf and branch pages, which present the scientific core content of the ToL collection.

#TREE OF LIFE BIOLOGY SERIES#

Life on Earth can be divided into a series of hierarchically nested subgroups, starting at the root of all life and ending at the tips in groups that cannot be further subdivided into distinct genetic lineages, e.g., Homo sapiens (humans). For example, eukaryotes is the containing group for a variety of groups including plants, animals, and fungi animals is the containing group for several groups including sponges, cnidarians, and Bilateria Bilateria is the containing groups for many groups like arthropods, molluscs, and nematodes, etc. Each of these major subgroups of Life is itself divided into a multitude of hierarchically nested subgroups. The three major groups of living things, Eubacteria, Archaea, and eukaryotes, are thus subgroups of the containing group Life on Earth. To the best of our current knowledge, all organisms that are alive today or that have lived on this planet in the past are part of one large, genetically connected group: Life on Earth. Hierarchical Relationships Between Groups of Organisms

Hierarchical Relationships Between Groups of Organismsīranches, leaves, other articles, notes, and treehouses.

The current page provides a brief introduction to some important concepts relevant to the ToL project's structure: To learn more about phylogeny and the genetic relatedness of all organisms, please refer to the Phylogenetic Biology pages in the ToL Learning section. The conceptual and navigational structure of the ToL web site is based upon the phylogenetic relationships among the creatures it catalogues and describes.

I love the OneZoom tool - really easy to use and the visualization is great.The Tree of Life (ToL) is a collection of materials documenting the diversity of the world's organisms.

Jackson Wheat, biology student at LSU Baton Rouge OneZoom is probably my favorite website of all time.Milana, biology undergraduate at Imperial College …simply the most useful tool for understanding phylogenetic and evolutionary relationships.Jana Vamosi, Associate Professor, University of Calgary I often use OneZoom in my class, the students love it.ĭr.

Jerry Coyne, University of Chicago, author of Why Evolution is True

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I wanted to congratulate the OneZoom team on the amazing interface and reference resource that is OneZoom.

I showed OneZoom to my colleagues as - honestly - the most impressive visualization of scientific results I have ever come across.

Joel Cracraft, American Museum of Natural History It is an invaluable tool for communicating the grand scope of life's history.

This will revolutionize how we teach and understand the Tree of Life.

Magnificent piece of software, brilliantly intuitive visualisation of the tree of life.

Alice Roberts, Professor of Public Engagement in Science, University of Birmingham

The best tool I’ve seen for exploring the tree of life on this planet.

Tree of life biology