"The affinities of all the beings of the same class have sometimes been represented by a great tree... As buds give rise by growth to fresh buds, and these if vigorous, branch out and overtop on all sides many a feebler branch, so by generation I believe it has been with the great Tree of Life, which fills with its dead and broken branches the crust of the earth, and covers the surface with its ever branching and beautiful ramifications."
Charles Darwin, 1859
Anatomy & Physiology
Visible Human Server
Botany
The International Plant Names Index
Evolution
Tree of Life Web project
Genetics
dbGaP Genotype & Phenotype
Microbiology
Protein Data Bank (PDB)
Zoology
Avibase
