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Genetic Variability & Mutation for the MCAT: Help and Review 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 "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!

Page 1

Question 1 1. The theory that genetic material in living organisms is contained within chromosomes is known as:

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Question 2 2. Which of the following explains how the alleles of one gene sort into gametes independently of the alleles of another gene?

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Question 3 3. Sex determination typically leads to the development of which of the following?

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Question 4 4. Which of the following statements about X-inactivation is FALSE?

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Question 5 5. Which of the following inborn errors of metabolism that can cause mental retardation if not treated early?

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Question 6 6. Which of the following statements is TRUE concerning Inborn Errors of Metabolism?

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Question 7 7. Hereditary Breast and Ovarian Cancer Syndrome (HBOC) _____.

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Question 8 8. Li-Fraumeni syndrome arises from a mutation in _____.

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Question 9 9. An example of a transversion mutation is _____.

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Question 10 10. _____ mutations result in a longer DNA strand.

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Question 11 11. Which type of mutation does NOT change the overall function of the protein?

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Question 12 12. Which type of mutation results in an incomplete polypeptide because of an early stop signal?

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Question 13 13. How does a frameshift mutation in the gene coding for the enzyme, hexosaminidase A, result in Tay-Sachs disease?

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Question 14 14. Which of the following modifications of this DNA sequence, ACTGAC, would be considered a frameshift mutation?

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Question 15 15. Which best describes genetic variation?

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Question 16 16. Which is true about evolution?

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Question 17 17. Which of the following is a rearrangement that results in an increase in the number of copies of a segment of chromosome?

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Question 18 18. Which of the following is a rearrangement where a segment of chromosome is removed, rotated 180 degrees, and inserted into the same spot?

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Question 19 19. When genetic information is passed on through uniparental inheritance, which parent does it usually come from?

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Question 20 20. When does vegetative segregation occur?

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Question 21 21. Which of the following is NOT a major cause of a population bottleneck?

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Question 22 22. Why are alleles the driving force behind a population's evolutionary path?

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Question 23 23. What is a mutation?

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Question 24 24. What must happen before crossing over can occur in meiosis?

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Question 25 25. How do mutagens cause mutations?

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Question 26 26. Which enzyme checks DNA for errors?

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Question 27 27. How many possible genetic combinations can occur for an organism with a haploid number of 12?

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Question 28 28. You are a ___ organism.

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Question 29 29. The combined observations of Boveri and Sutton showed all of the following EXCEPT:

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Question 30 30. When does sex determination occur?

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Genetic Variability & Mutation for the MCAT: Help and Review 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 "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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