Biology

ADW has thousands of species accounts including text, pictures of living animals, photographs and movies of specimens, and/or recordings of sounds. Since students write the text of these accounts, we cannot guarantee their accuracy.

ADW also contains descriptions of levels of organization above the species level, e.g., phyla, classes, and in some cases, orders and families. Hundreds of hyperlinked pages and images illustrate the traits and general biology of these groups. Professional biologists prepare this part.

Connections between Tree of Life web pages follow phylogenetic branching patterns between groups of organisms, so visitors can browse the hierarchy of life and learn about phylogeny and evolution as well as the characteristics of individual groups.

ITIS is the result of a partnership of federal agencies formed to satisfy their mutual needs for scientifically credible taxonomic information.

NCBI Genome Resource guides provide links, scoped searches, and alerts for a variety of genome-oriented data sources.

The RCSB PDB provides a variety of tools and resources. Users can perform simple and advanced searches based on annotations relating to sequence, structure and function. These molecules are visualized, downloaded, and analyzed by users who range from students to specialized scientists.