| Term | Definition |
|---|
| evolution | process by which modern organisms are thought to have descended from ancient ones |
| theory | a well-supported, testable explanation of phenomena that have occurred in the natural world |
| On the Origin of Species | suggested that natural selection can lead to the formation of new species |
| artificial selection | breeding organisms with specific traits in order to produce offspring with identical traits |
| adaption | an inherited characteristic that increases an organisms chance of survival |
| survival of the fittest | individuals suited to their environment survive and reproduce |
| descent with modification | each living species has descended, with changes, from other species over time |
| fossils | preserved remains of ancient organisms |
| homologous structures | structures that have different mature forms but develop from the same embryonic tissue |
| vestigial organ | organ that has no (known) function in an organism |
| gene pool | consists of all genes, including all the different alleles, that are present in a population |
| stabilizing selection | natural selection that favors the average individual in a population |
| directional selection | occurs when natural selection favors one of the extreme variations of a trait |
| disruptive selection | both extreme traits are selected |
| genetic drift | change in an allele |
| antibiotic resistance | occurs when some bacteria survive an antibiotic, reproduce, and pass the resistance to the next generation |
| pesticide resistance | occurs in insects surviving pesticides and passing it to the next generation |
| speciation | the development of a new type of species |
| reproductive isolation | when members of two populations can not interbreed and produce fertile offspring |
| behavioral isolation | differences in courtship and reproductive strategies keep two populations from breeding |
| geographic isolation | two populations are separated by a geographical feature |
Combine with other sets
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