| A | B |
| speciation | evolution of a new species |
| geographic isolation | physical barriers sparates population into groups; mountains,oceans |
| adaption | characteristic that allow organisms to survive and reproduce |
| divergent evolution | pattern of evolution in which species that once were all similar to the ancestors become more different: ex Darwin's finches |
| convergent evolution | pattern of evolution in which distantly related or unrelated organisms evolve similiar traits -ex - shark and dolphin |
| natural selection | mechanism for change in population favorable variations survive, reproduce, and pass variation to offspring |
| fitness | ability to survive and reproduce |
| coevolution | 2 species evolve in response to each other |
| homologous structure | structure having a common evolutionary origin |
| analogous structure | in function but different structurepart is similiar |