Mutation and DNA Structure Quiz
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Questions and Answers

What is a mutant gene?

  • A gene that codes for proteins
  • A gene that has the same sequence as the wild type gene
  • A gene with an inheritable different sequence compared to the normal gene (correct)
  • A gene that is only present in somatic cells

    • Which statement about mutations is true?

  • The vast majority of mutations are neutral to the organism (correct)
  • DNA mutations always result in phenotypic changes
  • Most mutations have a significant effect on the organism
  • Mutations are always inheritable

    • What are the building blocks of DNA strands known as?

  • Amino acids
  • Monosaccharides
  • Nucleotides (correct)
  • Polypeptides

    • What are the nitrogen-containing nucleobases found in DNA?

    <p>Cytosine, Guanine, Adenine, Thymine</p> Signup and view all the answers

    Which type of cells need a mutation to be present to be inheritable?

    <p>Germline cells (meiotic)</p> Signup and view all the answers

    What are static mutations?

    <p>Mutations that become a stable part of the germline and all somatic cells except RBCs</p> Signup and view all the answers

    Which type of mutation involves a change in the number of nucleotides, leading to a shift in the reading frame?

    <p>Frameshift</p> Signup and view all the answers

    What is the term used to describe a mutation that results in a premature stop codon, leading to a truncated protein?

    <p>Nonsense mutation</p> Signup and view all the answers

    In the context of dynamic mutations, what is the significance of trinucleotide repeats (TNR)?

    <p>They increase in severity with each generation due to an increasing number of repeats.</p> Signup and view all the answers

    What is the term used to describe a mutation that does not affect the functionality of the resulting protein?

    <p>Silent mutation</p> Signup and view all the answers

    Which type of mutation is characterized by a change in the protein's function at specific temperatures?

    <p>Temperature-sensitive mutation</p> Signup and view all the answers

    What is the term used to describe a mutation that only affects the organism under certain environmental conditions?

    <p>Leaky mutation</p> Signup and view all the answers

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