What do phylogenetic trees illustrate ... advanced by many of his predecessors, Charles Darwin largely rejected the ladder concept in favor of a tree; indeed, the only figure in Darwin's Origin ...

and 7 species of tree-dwelling insect-eaters. Scientists long after Darwin spent years trying to understand the process that had created so many types of finches that differed mainly in the size ...

Gould is one of several renowned naturalists eager to look at Darwin's collections. Darwin thinks the birds are a jumbled mix of finches ... like those on a family tree? "It was evident that ...

This year marks the two-hundredth anniversary of Charles Darwin's birth and the one ... Although today the concept of a tree of life, particularly to portray the phylogenetic connection between ...