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AP Biology: Evolution Overview Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Which is true about random mutations?

Question 2 2.

Which of the following is an example of a homologous structure or trait?

I. Arm bones of a human and wings of a bird

II. Wing of a penguin and wing of a mosquito

III. Beak of a penguin and beak of a duck

Question 3 3. A scientist has observed animals in a particular habitat for some time. She notices that the slowest gazelles tend to fall victim to predators more frequently than faster ones. Over time, she notes that the gazelle herd on average runs faster. She is observing:

Question 4 4. After observing a population of fish with interesting protective spines, a scientist decides to move two of the fish into a new pond to create a new population of fish to study the ability of the fish to survive a new set of predators. Which of the following evolutionary agents did the scientist introduce?

Question 5 5. Consider a population of fish where the length of a given fish's dorsal spine is determined by a single gene, which is defined by two different alleles. The dominant A allele encodes a long dorsal spine and the recessive a allele encodes a short dorsal spine. The fish is diploid and reproduces sexually. The number of AA individuals in this population is 500, the number of Aa individuals is 100, and the number of aa individuals is 400. If a new population was started with 10 AA, 20 Aa, and 10 aa fish, then what are the new allelic frequencies?

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Question 6 6. Consider a population of fish where the length of a given fish's dorsal spine is determined by a single gene, which is defined by two different alleles. The dominant A allele encodes a long dorsal spine and the recessive a allele encodes a short dorsal spine. The fish is diploid and reproduces sexually. If the number of AA individuals is 500, the number of Aa individuals is 200, and the number of aa individuals is 300, then is this population in equilibrium? Why or why not?

Question 7 7. Consider a population of fish where the length of a given fish's dorsal spine is determined by a single gene, which is defined by two different alleles. The dominant A allele encodes a long dorsal spine and the recessive a allele encodes a short dorsal spine. The fish is diploid and reproduces sexually. If the number of AA individuals is 500, the number of Aa individuals is 200, and the number of aa individuals is 300, then what is the frequency of 'A' in this population?

Question 8 8.

Which of the following statements does NOT represent the idea of heritability by acquired characteristics?

I. A body builder develops stronger muscles during the course of his life, so his son will be strong as well.

II. A cat that lost its tail will produce offspring with shorter tails.

III. Over time, a population of heavily striped zebras increased over those without as much striping, as the heavily striped ones had a competitive advantage over the zebras with fewer stripes, and were, therefore, better able to reproduce.

Question 9 9. Some studies have shown that a single copy of the cystic fibrosis disease allele can confer resistance to tuberculosis to a person. This is an example of:

Question 10 10. A farmer mates a goat and a sheep together. However, he finds he cannot use this hybrid animal to produce any new hybrids. This is an example of _____.

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Question 11 11. Which of the following forces is LEAST likely to cause a new species to arise in a population?

Question 12 12. How did the Industrial Revolution help the dark-colored moths become more common?

Question 13 13. Two species of plants that do not cross-pollinate are an example of _____ isolation because they flower at different times of the year.

Question 14 14.

Select the statements about Hardy-Weinberg equilibrium that are true.

I. Hardy-Weinberg equilibrium is often found in the wild.

II. The allele frequency of a population in Hardy-Weinberg equilibrium does not change.

III. The Hardy-Weinberg equation predicts the evolutionary agent affecting a population.

Question 15 15. A scientist notices several birds in the same area that are similar in appearance with the exception of different beak lengths. She observes that one type of bird with a particularly long beak can pick bugs out of holes in the ground, while the birds with shorter beaks cannot. The longer beak is an example of

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Question 16 16. A zoo wants to assist two related endangered species with their reproduction and plans to directly implant the sperm into the female. Which type of isolation can NOT be overcome in this way?

Question 17 17. The coat color gene of a population of squirrels is defined by a dominant allele G, which encodes a gray coat, and a recessive allele g, which encodes a black coat. In a population, genetic typing reveals the genotypic distribution to be 50 GG, 30 Gg, and 20 gg. If this population is in equilibrium, then what should the genotypic frequency of Gg squirrels in this population be?

Question 18 18. One way to overcome behavioral isolation that prevents animals from reproducing might be to _____.

Question 19 19. Which of the following statements is true?

Question 20 20. One species of sea urchin is able to mate with another, but fertilization is rarely successful. What is this an example of?

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Question 21 21. A scientist has observed animals in a particular habitat for some time. She notices that in a population of birds those with either short or long beaks can find more food than those with average sized beaks. Over time, she notices a higher proportion of birds in the population have either short or long beaks. She is observing:

Question 22 22. Which of the following is NOT a principle of Darwin's theory of evolution?

Question 23 23. The coat color gene of a population of squirrels is defined by a dominant allele G, which encodes a gray coat, and a recessive allele g, which encodes a black coat. In a population, genetic typing reveals the genotypic distribution to be 50 GG, 30 Gg, and 20 gg. What is the allelic frequency of the g allele?

Question 24 24. Which field would best describe why penguins and polar bears are not found in the same regions of Earth?

Question 25 25. Which best describes genetic variation?

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Question 26 26. Punctuated equilibria describes which phenomenon?

Question 27 27. Artificial selection is also known as _____.

Question 28 28. Why do mutations appear more often with selective breeding?

Question 29 29. Which is true about evolution?

Question 30 30. Which does NOT provide evidence for evolution?

AP Biology: Evolution Overview Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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