Vocabulary words from the AP Edition of Campbell Biology, Chapter 25.
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| 199603336 | macroevolution | broad pattern of evolution above the species level | 0 | |
| 199603337 | protocells | droplets with membranes that maintained an internal chemistry different from that of their surroundings | 1 | |
| 199603338 | ribozymes | an RNA molecule that functions as an enzyme, such as an intron that catalyzes its own removal during RNA splicing | 2 | |
| 199603339 | radiometric dating | dating based on the decay of radioactive isotopes | 3 | |
| 199603340 | half-life | the time required for 50% of the parent isotope to decay | 4 | |
| 199603341 | geologic record | division of Earth's history into time periods, grouped into three eons: Archaean, Proterozoic, and Phanerozoic; also divided into eras, periods, and epochs | 5 | |
| 199603342 | stromatolites | layered rocks that form when certain prokaryotes bind thin films of sediment together | 6 | |
| 199603343 | plate tectonics | theory that the continents are part of great plates of Earth's crust that essentially float on the hot, underlying portion of the mantle | 7 | |
| 199603344 | mass extinction | large numbers of species become extinct throughout Earth | 8 | |
| 199603345 | adaptive radiations | periods of evolutionary change when groups of organisms form new species whose adaptations make them fill different ecological roles in their communities | 9 | |
| 199603346 | heterochrony | an evolutionary change in the rate or timing of developmental events | 10 | |
| 199603347 | paedomorphosis | retention in an adult organism of the juvenile features of its evolutionary ancestors | 11 | |
| 199603348 | homeotic genes | any of the master regulatory genes that control placement and spatial organization of body parts in animals, plants, and fungi by controlling the developmental fate of groups of cells | 12 |
