Credit for doing the most to crack this puzzle goes to Ernst Mayr, perhaps the greatest evolutionary scientist ... working on bird classification while formulating his key ideas about evolution.

In this evolutionary tree, species A and B share a recent common ancestor. Species A is therefore most similar to species B. Species F and G also share a recent, common ancestor, however this ...

The first division of living things in the classification system is to put them into one of five kingdoms. The five kingdoms are: The binomial system is important because it allows scientists to ...