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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 NOT true about the fossil record?

Question 2 2. Paleontology is the study of

Question 3 3. Why do mutations appear more often with selective breeding?

Question 4 4. Which field would best describe why penguins and polar bears are not found in the same regions of Earth?

Question 5 5. Why is the peppered moth phenomenon uncommon?

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Question 6 6. 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

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 an 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. A population of lizards is split by an earthquake which leaves half of the population on an island and the other half on the tip of the peninsula. These lizards can't swim. What type of speciation will occur?

Question 9 9. Which of the following is NOT a principle of Darwin's theory of evolution?

Question 10 10. What is the main difference between natural selection and artificial selection?

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Question 11 11. 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 12 12. 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 13 13. Which of the following is an example of convergent evolution?

Question 14 14. How do losses of alleles in natural selection differ from losses of alleles in genetic drift?

Question 15 15. Which is true about random mutations?

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Question 16 16. 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 17 17. 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 18 18. Which best describes directional selection?

Question 19 19. 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 20 20. 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 21 21.

Which of the following statements does NOT represent the idea of 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. Neck length in a giraffe population increased over time since taller giraffes had a competitive advantage over shorter giraffes.

Question 22 22. 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 _____.

Question 23 23. Which best describes natural selection?

Question 24 24. Why do scientists use the Hardy-Weinberg equation?

Question 25 25.

Which of the following is an example of polyploidy?

I. An insect with n = 4 has 8 total chromosomes in each somatic cell

II. A plant with n = 12 has 48 total chromosomes in each somatic cell

III. A fish with n = 66 has 132 total chromosomes in each somatic cell

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Question 26 26. What are homologous genes?

Question 27 27. How did the Industrial Revolution help the dark-colored moths become more common?

Question 28 28. Which does NOT provide evidence for evolution?

Question 29 29. Which is NOT a trait that might be selected for through artificial selection?

Question 30 30. An individual in a wheat population transforms from a diploid to a tetraploid genome. This individual gives rise to a new population of wheat which can no longer successfully mate with the original diploid population. This is an example of:

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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