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Transcript
7a. Assessment Questions 1. Natural selection could not occur without A. genetic variation in species. B. environmental changes. C. competition for unlimited resources. D. gradual warming of Earth. 2. Natural selection is the process by which A. the age of selected fossils is calculated. organisms with traits well suited to their environment survive and reproduce at a greater rate than less well-adapted B. organisms in the same environment. C. acquired traits are passed on from one generation to the next. D. All of the above 3. Natural selection causes A. changes in the environment. B. plants and animals to produce more offspring than can survive. C. changes in the frequency of certain alleles in a population. D. All of the above 4. In the process of natural selection, plants that A. are short because of lack of water will pass on short genes to their offspring. B. grow on rocky cliffs will have more offspring than those that grow on windy hills. C. have flowers that attract bees will pass on these genes to their offpring. D. are larger will live longer than the smaller plants. 5. The range of phenotypes shifts toward one extreme in A. stabilizing selection. B. disruptive selection. C. directional selection. D. polygenic selection. 7a. Assessment Questions 1. Natural selection could not occur without A. genetic variation in species. B. environmental changes. C. competition for unlimited resources. D. gradual warming of Earth. 2. Natural selection is the process by which A. the age of selected fossils is calculated. organisms with traits well suited to their environment survive and reproduce at a greater rate than less well-adapted B. organisms in the same environment. C. acquired traits are passed on from one generation to the next. D. All of the above 3. Natural selection causes A. changes in the environment. B. plants and animals to produce more offspring than can survive. C. changes in the frequency of certain alleles in a population. D. All of the above 4. In the process of natural selection, plants that A. are short because of lack of water will pass on short genes to their offspring. B. grow on rocky cliffs will have more offspring than those that grow on windy hills. C. have flowers that attract bees will pass on these genes to their offpring. D. are larger will live longer than the smaller plants. 5. The range of phenotypes shifts toward one extreme in A. stabilizing selection. B. disruptive selection. C. directional selection. D. polygenic selection. 6. The theory of evolution by natural selection explains, in scientific terms, how living things evolve over time. What is being selected in this process?