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Evolution Study Guide Final Exam

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Question 1 1. How does natural selection work?

Question 2 2. 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 3 3. Which of the following is not a characteristic of all prokaryotes?

Question 4 4. Which of the following terms best describes a graphic display of the evolutionary relationships for organisms with a shared common ancestor?

Question 5 5. Consider the following scenario. The coat color gene of a population of squirrels is defined by dominant allele G, which encodes a gray coat, and 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 in this population?

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Question 6 6.

Consider a population where the number of dorsal spines on a fish is determined by a single gene, which is defined by two different alleles. The dominant A allele encodes a long spine and recessive a allele encodes a short spine. The fish is diploid and reproduces sexually. If the number of AA individuals is 500, the number of Aa individuals is 100, and the number of aa individuals is 400, which of the following statements are true:

I. The population is in equilibrium.

II. The population is not in equilibrium.

III. The observed number of fish with short spines exceeds the expected.

IV. The expected number of AA individuals exceeds the number of observed.

Question 7 7. What trend was common as humans evolved beyond Australopithecines, as evidenced by Homo habilis and others?

Question 8 8. Which of these is NOT true of the Replacement model of human origin?

Question 9 9. 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 10 10. Which of the following statements is true?

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Question 11 11. Which field would best describe why penguins and polar bears are not found in the same regions of Earth?

Question 12 12. What type of event separates the Paleozoic from the Mesozoic and the Mesozoic from the Cenozoic eras in the Phanerozoic eon?

Question 13 13. Why does N-15 DNA sink to a lower level than N-14 in a centrifuge tube?

Question 14 14. What did J. Craig Venter do?

Question 15 15. How did the Industrial Revolution help the dark-colored moths become more common?

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Question 16 16. Which term best describes a group of species without a known common ancestor?

Question 17 17. Consider a population where the number of dorsal spines on a fish is determined by a single gene, which is defined by two different alleles. The dominant A allele encodes a long spine and recessive a allele encodes a short 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, what are the new allelic frequencies?

Question 18 18. Which of the following is considered to be one of the most primitive of the primates?

Question 19 19. A scientist mates a blue population of lizards with a red population of lizards. She observes that one out of ten hybrid offspring survive to adulthood compared to, roughly, eight out of ten blue or red lizards. This is an example of _____.

Question 20 20. ________ can be defined as a change in a characteristic within a population over time.

Evolution Study Guide Final Exam Instructions

Choose your answers to the questions and click 'Next' to see the next question. You can skip questions if you would like and come back to them later with the "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. You will lose your work if you close or refresh this page. Good luck!

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