Mutations Classified Based on Phenotypic Effects
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Questions and Answers

What type of mutation results in a gene product with enhanced, negative, or new functions?

  • Null mutation
  • Dominant gain-of-function (correct)
  • Haploinsufficiency
  • Dominant negative mutation
  • What type of mutation occurs when the single wild-type copy of the gene does not produce enough gene product to bring about a wild-type phenotype?

  • Rcessive mutation
  • Dominant negative mutation
  • Loss-of-function
  • Haploinsufficiency (correct)
  • What is the term for mutations that result in a complete loss of function?

  • Dominant mutation
  • Null mutation (correct)
  • Loss-of-function
  • Recessive mutation
  • What type of mutation leads to a loss of ability to synthesize an amino acid or vitamin?

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

    What is the term for mutations that are easily observed and affect a morphological trait?

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

    What is the primary effect of behavioral mutations on an organism?

    <p>Disrupting behavioral patterns</p> Signup and view all the answers

    What type of mutation can result in lethality at different points in the life cycle of an organism?

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

    What is the characteristic of temperature-sensitive mutations?

    <p>They are only expressed in certain environments</p> Signup and view all the answers

    What is the effect of a neutral mutation on an organism's genetic fitness?

    <p>It has a negligible effect on fitness</p> Signup and view all the answers

    What is the main difference between a regulatory mutation and a biochemical mutation?

    <p>One affects gene expression, while the other affects protein function</p> Signup and view all the answers

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