Unit 3 Target 5: Mutations

12 Questions | Total Attempts: 815

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Unit 3 Target 5: Mutations


Questions and Answers
  • 1. 
    An error in DNA replication can cause
    • A. 

      Mutations.

    • B. 

      Genetic variation.

    • C. 

      Cancer

    • D. 

      All of the above.

  • 2. 
    Mutations can
    • A. 

      Change the shape of the protein.

    • B. 

      Change the function of the protein.

    • C. 

      Both A and B.

    • D. 

      Only B.

  • 3. 
    Changes in the DNA sequence that affect genetic information is known as:
    • A. 

      Replications.

    • B. 

      Mutations.

    • C. 

      Transformations.

    • D. 

      Prokaryotes.

  • 4. 
    Which of the following is NOT a gene mutation?
    • A. 

      Inversion

    • B. 

      Insertion

    • C. 

      Deletion

    • D. 

      Substitution

  • 5. 
    Which of the following is NEVER a frameshift mutation?
    • A. 

      Substitution

    • B. 

      Insertion

    • C. 

      Deletion

    • D. 

      All of the above

  • 6. 
    Which of the following is NOT true about gene mutations?
    • A. 

      A gene mutation may be cause by exposure to radiation.

    • B. 

      Gene mutations can change the shape of the protein that is produced.

    • C. 

      Gene mutations can change the function of the protein that is produced.

    • D. 

      A gene mutation is a permanent change in the sequence of the DNA nucleotides.

    • E. 

      Gene mutations only occur during DNA replication.

  • 7. 
    Which of the following would only affect one amino acid in the protein that is produced?
    • A. 

      Silent

    • B. 

      Point

    • C. 

      Frameshift

    • D. 

      Deletion

    • E. 

      All of these

  • 8. 
    Which of the following would have no affect on the amino acid in the protein that is produced?
    • A. 

      Insertion

    • B. 

      Silent

    • C. 

      Deletion

    • D. 

      Frameshift

    • E. 

      None of these

  • 9. 
    Which of the following would affect the entire amino acid sequence in the protein that is produced?
    • A. 

      Frameshift

    • B. 

      Substitution

    • C. 

      Point

    • D. 

      Silent

    • E. 

      All of these

  • 10. 
    Persons A and B have similar mRNA sequences with the exception of 1 nucleotide.        Person A: AUGGUUACUAAGGGCUGA        Person B: AUGGAUACUAAGGGCUGAUse the genetic code chart to determine how this difference affects the sequence of amino acids in the resulting protein.
    • A. 

      Persons A and B have identical amino acid sequences.

    • B. 

      Lys in Person A is replaced with Glu in Person B.

    • C. 

      Val in Person A is replaced with Glu in Person B.

    • D. 

      Val in Person A is replaced with Asp in Person B.

  • 11. 
    The mRNA sequence CAGAAAGAU codes for the amino acids Gln-Lys-Asp. A mutation occurs, and the resulting mRNA sequence is CAGAAGGAU. What type of mutation would this be?A)    frameshift mutation caused by deletion because the removal of one nucleotide changed the entire sequence of amino acids after the mutation    B)    point mutation because it only affects one amino acid    C)    frameshift mutation caused by insertion because the addition of one nucleotide changed the entire sequence of amino acids after the mutation    D)    silent mutation because it has no affect on the amino acid sequence
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 12. 
    The mRNA sequence ACUGCUUGG codes for the amino acids Thr-Ala-Trp. A mutation occurs, and the resulting mRNA sequence is AUCUGCUUGG. What type of mutation would this be?A)    frameshift mutation caused by deletion because the removal of one nucleotide changed the entire sequence of amino acids after the mutation    B)    silent mutation because it has no affect on the amino acid sequence    C)    frameshift mutation caused by insertion because the addition of one nucleotide changed the entire sequence of amino acids after the mutation    D)    point mutation because it only affects one amino acid
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

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