| A | B |
| Scientific Name | the unique two word name assigned to each kind of organism on the earth |
| Genus | group of closely related species |
| species | a group of organisms that can interbreed with each other but not members of any other group |
| Taxonomy | the science of classifying living things |
| Family | group of closely related genera |
| Order | collection of similar families |
| Class | collection of similar orders |
| Phylum | the divisions of a kingdom |
| Kingdom | collection of similar phyla |
| Convergent Evolution | process whereby organisms that are not related evolve similar features |
| Analogous Structure | features of orgaisms that are similar but have evolved independently |
| Derived Character | a unique characteristic that defines a group of organisms |
| Cladogram | branching diagram showing evolutionary relationships |
| Hybrid | offspring that results from interbreeding between members of different species |