| A | B |
|---|
| evolution | change over time |
| theory | well-supported testable explanation of phenomena that have occurred in the natural world. |
| Lamarck | believed that acquired traits could be inherited |
| Darwin | his book was called "On the Origin of Species" |
| survival of the fittest | Individuals that are better suited to their environment survive and reproduce most successfully |
| adaptation | is any inherited characteristic that increases an organism's chance of survival |
| natural selection | Darwin referred to survival of the fittest as this |
| fossils | remains of formerly living organisms |
| homologous structures | Structures that have different mature forms but develop from the same embryonic tissues |
| vestigial organs | homologous organs that are no longer used |
| wisdom teeth | an example of a vestigial organ in humans |
| appendix | an example of a vestigial organ in humans |
| embryology | study of embryos |
| speciation | formation of a new species |
| survival of the fittest | Individuals with favorable characteristics would survive to pass their traits on to their offspring. |
| species | Group of organisms that can breed and produce fertile offspring |
| genetic drift | Random change in allele frequency |
