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Basics of Gene Mutations 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. How are the Tay Sachs and the Duchenne Muscular Dystrophy diseases different?

Question 2 2. _____ is used to describe a mutation in which one nitrogenous base is replaced by another.

Question 3 3.

In point mutations, there are changes in one or a few nucleotides at a single location in a DNA sequence.

Which of the following is NOT a nucleotide?

Question 4 4. Part of a normal DNA sequence is TACCGG. If this sequence undergoes a base substitution, out of the possibilities given identify the sequence that could be a possible result.

Question 5 5. What are mutations that result in DNA sequences that are slightly too long or too short called?

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Question 6 6. How do mutagens cause mutations?

Question 7 7. When can a genetic mutation get passed down through successive generations?

Question 8 8. Why do people try to protect their skin from ultraviolet radiation?

Question 9 9. Mutagens are typically found _____.

Question 10 10. Which enzyme checks DNA for errors?

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Question 11 11. The eleventh amino acid of protein X should be serine, however due to a mutation it now has the amino acid alanine in that position. Which type of mutation could have caused this change?

Question 12 12. Which type of mutation does NOT change the overall function of the protein?

Question 13 13. What kind of mutation causes sickle-cell anemia?

Question 14 14. A mutation in DNA can affect the amino acid sequence because it affects the code found in _____.

Question 15 15. Which type of mutation results in an incomplete polypeptide because of an early stop signal?

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Question 16 16. An example of a transversion mutation is _____.

Question 17 17. The best term to describe the incorporation of a random mistake into the DNA sequence at a specific point is _____.

Question 18 18. Based on the original sequence, ACTTGAC, which of the following answer choices includes a transition mutation?

Question 19 19. A type of point mutation that alters the length of the DNA strand is _____.

Question 20 20. _____ mutations result in a longer DNA strand.

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Question 21 21. How would a shift in the reading frame likely alter the resulting protein?

Question 22 22. Which of the following modifications of this DNA sequence, ACTGAC, would be considered a frameshift mutation?

Question 23 23. The deletion of a base in the DNA strand will _____.

Question 24 24. How does a frameshift mutation in the gene coding for the enzyme, hexosaminidase A, result in Tay-Sachs disease?

Question 25 25. Which type of mutations can result in a frameshift?

Basics of Gene Mutations 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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