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Population Genetics and Evolution 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. 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 2 2. What might explain how a child has a genetic disease that neither of his parents have?

Question 3 3. A new mutation allows a cheetah to run faster and hunt down more prey than its slower counterparts. This mutation increased the _____ of the cheetah.

Question 4 4. Which of these statements about alleles and genes is FALSE?

Question 5 5.

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

Question 7 7. Using the criteria outlined in the Hardy-Weinberg equilibrium, determine which of the following populations can be balanced.

Question 8 8. 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 9 9. Which of these statements would Lamarck most likely have agreed with?

Question 10 10. Define speciation.

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Question 11 11. One species of sea urchin is able to mate with another, but fertilization is rarely successful. What is this an example of?

Question 12 12. Without _, evolution cannot occur.

Question 13 13. The Hardy-Weinberg Equation allows scientists to do what?

Question 14 14. The study of the allelic, genotypic, and phenotypic variation within a population is referred to as _____

Question 15 15. Imagine that a bee carries pollen on the tip of its abdomen from one flowering plant to another. However, when the bee sits on one type of flower, the pollen on the bee's abdomen does not touch the part of the flower that needs to receive the pollen. This pollen won't be able to fertilize this flower. What is this an example of?

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Question 16 16. Which of the following statements is true?

Question 17 17.

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 18 18. In the Hardy-Weinberg equation, what is p^2 (p squared)?

Question 19 19. 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 20 20. 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 21 21. Which of the following statements is FALSE?

Question 22 22. Jenny has curly red hair, this is a description of her _____.

Question 23 23. 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 24 24. 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?

Question 25 25. The development of antibiotic resistance in a population of bacteria would be an example of _.

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Question 26 26. Which of these would be an example of disruptive selection?

Question 27 27. 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:

Question 28 28. If only a few individuals of a bird population migrated to a faraway island, what could occur?

Question 29 29. Which of the following is an example of convergent evolution?

Question 30 30. How is it possible that a harmful gene can code for an advantageous characteristic?

Population Genetics and Evolution 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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