Mastering Quantitative Trait Loci (QTL)
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Questions and Answers

What is often an early step in identifying the actual genes that cause the trait variation?

  • Observing the trait variation
  • Mapping the QTLs (correct)
  • Identifying the phenotype
  • Studying the environment

    • What is a Quantitative Trait Locus (QTL)?

  • A region of DNA associated with a particular phenotypic trait (correct)
  • A type of molecular marker
  • A specific chromosome where traits are found
  • A specific gene that causes trait variation

    • What does the number of QTLs which explain variation in the phenotypic trait indicate?

  • The specific DNA sequence
  • The type of molecular markers
  • The number of genes involved
  • The genetic architecture of a trait (correct)

    • What does it mean when a trait is controlled by many genes of small effect?

    <p>The trait is polygenic (A)</p> Signup and view all the answers

    Which traits typically underlie QTLs?

    <p>Continuous traits (D)</p> Signup and view all the answers

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