Temporary Page

Double-stranded DNA Viruses

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
taxon links Not MonophyleticPhylogenetic position of group is uncertain[down<--]Viruses Interpreting the tree
close box

This tree diagram shows the relationships between several groups of organisms.

The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancestor diversified over time into several descendent subgroups, which are represented as internal nodes and terminal taxa to the right.

example of a tree diagram

You can click on the root to travel down the Tree of Life all the way to the root of all Life, and you can click on the names of descendent subgroups to travel up the Tree of Life all the way to individual species.

For more information on ToL tree formatting, please see Interpreting the Tree or Classification. To learn more about phylogenetic trees, please visit our Phylogenetic Biology pages.

close box
Containing group: Viruses
Title Illustrations
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
Scientific Name Orthopoxvirus
Comments This photograph reveals smallpox virus pocks on the chorioallantoic membrane of a developing embryonic chick. Poxviruses are very easy to isolate, and will grow in a variety of cell cultures, producing characteristic hemorrhagic pocks on the embryonic chicken chorioallantoic membrane (CAM).
Creator CDC/John Noble
Specimen Condition Dead Specimen
Source Collection Public Health Image Library (Centers for Disease Control)
Scientific Name Orthopoxvirus
Comments Electron micrograph of a Vaccinia Virus. Vaccinia virus is normally confined to cattle, but is conveyed to humans through vaccination, thereby, imparting immunity to the smallpox virus.
Creator CDC/Dr. Fred Murphy/Sylvia Whitfield
Specimen Condition Dead Specimen
Source Collection Public Health Image Library (Centers for Disease Control)
About This Page

All Rights Reserved.

Citing this page:

Tree of Life Web Project. 2005. Double-stranded DNA Viruses. Version 22 December 2005 (temporary). http://tolweb.org/Double-stranded_DNA_Viruses/21830/2005.12.22 in The Tree of Life Web Project, http://tolweb.org/

edit this page
close box

This page is a Tree of Life Branch Page.

Each ToL branch page provides a synopsis of the characteristics of a group of organisms representing a branch of the Tree of Life. The major distinction between a branch and a leaf of the Tree of Life is that each branch can be further subdivided into descendent branches, that is, subgroups representing distinct genetic lineages.

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

Double-stranded DNA Viruses

Page Content

articles & notes

collections

people

Explore Other Groups

random page

  go to the Tree of Life home page
top