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Make sure you have a whiteboard … (markers come later) On Warmup sheet: Number 1 to 10 What is evolution? a. b. c. d. An inherited characteristic harmful change in genetic information when an animal or plant changes When populations of organisms change over time • Darwin’s theory has 2 parts: (1) The ability of an organism to survive and reproduce in its natural environment is called A. B. C. D. evolution fitness natural selection use and disuse • Part (2) of his theory, Common Descent with modification, is when A. Each living species has descended, with changes, from other species over time B. Individuals at the upper and lower ends of a curve have the highest fitness C. Small groups migrate to isolated new places D. Two populations are separated by geographic barriers • The diagrams below show changes in a desert lizard population. Which biological concept is illustrated (in the lizard picture on the last page)? A. polygenic traits B. natural selection C. sex-linked inheritance D. silent mutations A group of squirrels were living together in the same forest. Because of an earthquake the forest was split into two separate forests divided by a large, rapid river. Squirrels were separated equally between the two different forests. Millennia later these two populations of squirrels were two different species. Which of the following would be the most plausible explanation? A. Artificial selection has occurred because the environmental pressures for the first group of squirrels was different than those for the second B. Evolution has occurred because squirrel populations diverged over time C. Evolution has occurred because the squirrels became more complex over time D. Ionizing radiation from the sun has caused mutations in one group of squirrels E. Random mating has occurred because there were half as many squirrels to mate with • The pictures below show bone structures in three animals. What does the similarity in structure of the bones of these animals suggest? A. the chemical make-up of these animals is exactly the same. B. the size of these bones is the same. C. these species developed at the same time and location. D. these species share common ancestors. • The drawings below show a turtle embryo and a chicken embryo. • Which of the following statements is supported by the similarities between these embryos? • A. The turtle is more advanced than the chicken. B. The chicken has more offspring than the turtle. C. The turtle and the chicken are similar as adults. D. The chicken and the turtle share a common ancestor. • Porcupine quills, plant photosynthesis, and wolves hunting in packs are all examples of A. B. C. D. E. Adaptations Fitness Genetic mutations Natural selection Survival of the fittest • What didn’t Darwin know about that could have helped him understand his theory better? A. B. C. D. E. Genetics Geology Oceanography Plant science World geography • What is the best description of a population? A. A group of a single species that can have offspring B. A group of a single species that can interbreed and produce fertile offspring C. All the living and non-living factors in the environment D. Several species in a geographic area