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Seventh Grade (Grade 7) Evolution Questions

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Grade 7 Evolution
Over a period of years, the average rainfall in an area decreases, causing environmental changes. Which of the following populations would be most likely to survive these environmental changes?
  1. a population with the greatest amount of genetic variation
  2. a population with the least amount of genetic variation
  3. a population that has been altered through artificial selection
  4. a population with the smallest population size
Grade 7 Evolution
Grade 7 Evolution
Grade 7 Evolution
Grade 7 Evolution
Which of the following is a situation that could lead to extinction of a species?
  1. increased competition
  2. increased food supply
  3. increased habitat
  4. increased population size
Grade 7 Evolution
Which of these statements is true about DNA and evolution?
  1. Two species that have the same DNA provide evidence that evolution has taken place.
  2. Two species with very similar DNA likely evolved from a common ancestor.
  3. Each living species has DNA made from different ingredients, showing that organisms have evolved.
  4. DNA from related species is identical, providing evidence that all organisms have evolved in the same way.
Grade 7 Evolution
Grade 7 Evolution
Grade 7 Evolution
Grade 7 Evolution
Which of these scenarios is an example of natural selection?
  1. Farmers crossbreed two types of cows to produce a breed of cow that has high quality beef and can tolerate a hot climate.
  2. Giraffes that have longer necks survive a dry season by eating leaves from the tops of trees. Those giraffes breed more successfully that year.
  3. Dogs that have a desirable coat color are bred with one another to produce puppies with the same coat color.
  4. People kill rattlesnakes that rattle when approached by humans, but people do not kill rattlesnakes that remain silent. The quiet snakes survive and breed.
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