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Describe what an adaptation is. Before Charles Darwin, what did most people believe about the world? Which best defines ‘natural selection’? • • • • A. Survival of the best B. Predator vs. Alien C. Survival of the strongest D. Survival of the fittest What is the three word definition of evolution? Darwin studied organisms on the Galapagos Islands. On his voyage on the Beagle, Charles Darwin saw a many things that got him thinking what he ‘knew’ might not be correct. What are two of the things he saw? The biggest difference Darwin noticed about the finches he found was the • • • • A. similarities of the birds’ embryos. B. the different shapes of the birds’ beaks. C. length of the birds’ necks. D. number of eggs in each bird’s nest. Where would a fossil least likely form? • • • • A. a stream B. swamp C. ocean floor D. desert The term fitness means just how physically strong an organism is. What does the word “fitness” mean? What is the scientific name for the diagram shown? The number and location of bones in many fossil vertebrates are similar to those living vertebrates. Most biologists would probably explain this fact on the basis of • • • • A. the struggle for existence. B. a common ancestor. C. the needs of the organisms. D. inheritance of acquired characteristics. Artificial selection is the same as selective breeding. Why do organisms have more offspring than they can possibly take care of? Why do populations needs variation? What is an analogous structure? A whale pelvis, the human appendix, and the wings of the kiwi bird are examples of • • • • A. vestigial structures B. natural variation C. fossilized structures D. shared traits Darwin’s theory of evolution is based on the idea(s) of • • • • A. use and disuse B. the transmission of acquired traits C. variation and natural selection D. a tendency towards perfect, unchanging species A factor that keeps species separate (unable to interbreed) is • • • • A. different mating behaviors B. reproduction at different times C. incompatible reproductive strategies D. all of the above Name three characteristics the birds and amphibians have in common. According to Darwin’s theory of evolution, ________________ change over time. What organisms are more closely related – crocodiles and mammals, or crocodiles and birds? What is a homologous structure? What is the fossil record? Who did Darwin turn to when he was trying to make sense of the observations he made on his 5-year journey? What differences are apparent in the bodies of the three tortoise species shown? • Neck length, shell shape, shell size. Dolphins and sharks are more closely related than dolphins and wolves. What are cladograms or family trees based on? • A. evolved characteristics • B. structures with the same function, regardless of how they are built • C. how awesome organisms look • D. all of the above Example(s) of fossils include preserved • • • • A. body parts B. footprints C. eggs D. all of the above Most fossils form in • • • • A. sedimentary rock B. the sap of ancient trees C. ice flows D. muddy riverbanks Give an example of an analogous structure. What does a cladistic analysis show about organisms? • • • • A. the relative importance of each derived characteristic B. the order in which traits evolved C. the general fitness of the organisms shown D. all physical traits of each organisms analyzed What is the geologic time scale? Explain how relative dating works. The study of the processes of multicellular organisms as they develop from fertilized eggs to adults is called ______________ The development of the complex mammalian eye is a good example of how evolution can refine/change existing ______________ Explain why the fossil record does not include every type of organism that ever lived. Give an example of a homologous structure. Charles Darwin took all the credit for the idea of natural selection. Match the term with the most appropriate definition (5 questions, 1 pt each). Variation Specimen preserved in sediment or rock Competition Mass extinction K-T Boundary Differences in traits and characteristics Fitness Puts strain on organisms and available resources Fossil Ability to survive and reproduce offspring that can survive. The fossil record contains a fossil from every organism that ever lived. With peppered moths before the Industrial Revolution, which phenotype was found more often? The funny bone is not a bone. Explain how the island geography might have affected the species on the Galapagos. How do medicine and antibiotics model natural selection in bacteria? Which organism is devolving? • • • • A. Miley Cyrus B. Justin Beiber C. koala bear D. all of the above