Campbell Biology 9th Edition - Chapter 22 Flashcards
Descent with Modification: A Darwinian View of Life
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| 587582732 | evolution | generation-to-generation change in the proportion of different inherited genes in a population that account for all of the changes that have transformed life over an immense time | |
| 587582733 | fossils | preserved remains of once-living organisms | |
| 587582735 | strata | layers of sedimentary rock | |
| 587582737 | catastrophism | a principle that states that geologic change occurs suddenly | |
| 587582739 | uniformitarianism | is the idea that the geologic processes that operate today also operated in the past | |
| 587582740 | paleontology | the earth science that studies fossil organisms and related remains | |
| 587582742 | adaptation | inherited characteristic that increases an organism's chance of survival | |
| 587582743 | natural selection | process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest | |
| 587582744 | artificial selection | selection by humans for breeding of useful traits from the natural variation among different organisms | |
| 587582745 | homology | similarity in characteristics that results from common ancestry | |
| 587582746 | homologous structures | structures that have different mature forms in different organisms but develop from the same embryonic tissues | |
| 587582747 | vestigial structures | remnant of a structure that may have had an important function in a species' ancestors, but has no clear function in the modern species. | |
| 587582748 | evolutionary tree | A branching diagram that reflects a hypothesis about evolutionary relationships among groups of organisms. | |
| 587582749 | convergent evolution | process by which unrelated organisms independently evolve similarities when adapting to similar environments | |
| 587582750 | analogous | Having characteristics that are similar because of convergent evolution, not homology. | |
| 587582751 | Pangaea | the name of the single landmass that broke apart 200 million years ago and gave rise to today's continents | |
| 587582752 | endemic | native or confined to a particular region or people; characteristic of or prevalent in a field | |
| 587582753 | biogeography | dealing with the geographical distribution of animals and plants |