| A | B |
|---|
| artificial selection | When humans breed organisms to produce offspring with desired traits. |
| natural selection | Process in which organisms with certain variations survive to reproduce, changing the population over time. |
| mimicry | When a harmless species develops structural adaptations to look like a harmful species. |
| camouflage | Adaptations that allow a species to blend with their surroundings. |
| homologous structure | Structures that are similar in shape or arrangement. |
| analogous structure | Body parts of organisms that do not have a common evolutionary origin, but have similar functions. |
| vestigial structure | A body structure that does not have a present day function in an organism but was probably useful to an ancestor. |
| embryo | The earliest stage of growth and development of both plants and animals. |
| stabilizing selection | Selection that favors average individuals in a population and reduces variation. |
| disruptive selection | Selection that favors both extreme variations and eliminates the intermediate forms. |
| directional selection | Selection that favors one of the extreme variations. |
| speciation | The process of evolving new species. |
