That's correct! Like everything else, science involves a lot of trial and error...

The ability to change our ideas as more information becomes
available is what scientific discovery is all about!

A. All of the earth's organisms are united through the process of evolution.

B. Allowing them to include many organisms in a single analysis.

C. Once a cladogram is constructed, our ideas about evolutionary
relationships of organisms do not change.

D. Scientists use computer programs to build cladograms for many
organisms from large numbers of features.

E. One day, we hope to construct a cladogram that includes all
of the Earth's organisms. We call this cladogram the tree of life.