Master the World of Quantitative Trait Loci (QTL) with This Knowledge Quiz!
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Questions and Answers

Which of the following best describes a quantitative trait locus (QTL)?

  • A section of DNA that is associated with a phenotypic trait in an individual
  • A section of DNA that controls the genetic architecture of a trait
  • A section of DNA that correlates with variation of a quantitative trait in a population (correct)
  • A section of DNA that causes a trait variation in a population
  • How are QTLs mapped?

  • By identifying the genetic architecture of a trait
  • By identifying the actual genes that cause the trait variation
  • By identifying the number of QTLs that explain variation in the phenotypic trait
  • By identifying molecular markers that correlate with an observed trait (correct)
  • What does the number of QTLs indicate about the genetic architecture of a trait?

  • The number of genes that contribute to the trait variation
  • The number of QTLs that explain variation in the phenotypic trait (correct)
  • The number of chromosomes that contain QTLs
  • The number of genes that control the trait
  • What types of traits do QTLs typically underlie?

    <p>Continuous traits that vary continuously</p> Signup and view all the answers

    What are polygenic effects?

    <p>Effects caused by multiple genes</p> Signup and view all the answers

    True or false: A quantitative trait locus (QTL) is a section of DNA that correlates with variation of a qualitative trait in the phenotype of a population of organisms.

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

    True or false: QTLs are mapped by identifying which molecular markers correlate with an observed trait.

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

    True or false: QTLs are often found on the same chromosome.

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

    True or false: The number of QTLs indicates the genetic architecture of a trait.

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

    True or false: QTLs are only associated with discrete traits.

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

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