Key Terms of the Origin of Species and Evolutionary

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Claudia Natalica AP Biology - P.6 Ms. Hicks Key Terms : The Origin of Species and Evolutionary History 1. Adaptive radiation : period of evolutionary change in which groups of organisms form many new species whose adaptations allow them to fill different ecological roles in their communities. 2.Allopatric speciation : the formation of new species in populations that are geographically isolated from one another 3. Analogy : similarity between two species that is due to convergent evolution rather than to descent from a common ancestor with the same trait. 4. Behavioral isolation : Courtship rituals that attract mates and other behaviors unique to a species are effective reproductive barriers, even between closely related species. Such behavioral rituals enable mate recognition- a way to identify potential mates of the same species 5. Binomial : the two-part, Latinized format for naming a species, consisting of the genus and specific epithet ; a binomen 6. Biological species concept : definition of a species as a group of populations whose members have the potential to interbreed in nature and produce viable, fertile offspring, but do not produce viable, fertile offspring with members of other such groups. 7. Clades : groups of species that includes an ancestral species and all of its descendants. 8. Cladistic : an approach to systematic in which organisms are placed into groups called clades based primarily on common descent. 9. Cladogram : a diagram used in cladistics which shows relations among organisms. 10. Classes : In Linnaean classification, the taxonomic category above the level of order 11. Continental drift : the slow movement of Earth’s continents over time 12. Convergent Evolution : The evolution of similar features in independent evolutionary lineages. 13. Domain : a taxonomic category above the kingdom level. The three domains are
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