Quantitative Genetics: Study of Phenotypic Variation
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Questions and Answers

What is the most direct way to estimate broad sense heritability?

  • Measuring the variance of genetically identical individuals (correct)
  • Conducting a statistical genetic analysis
  • Measuring the variance of a randomly mating population
  • Studying the traits of twins reared together

What is the main advantage of using identical twins reared separately in different environments to estimate heritability?

  • It is a cost-effective method
  • It is a widely used method in genetics
  • It controls for genetic variation (correct)
  • It provides a large sample size

What is the term for the genetic regions that influence phenotypic variation of a complex trait?

  • Phenotypic variation
  • Quantitative trait loci (QTL) (correct)
  • Genetic markers
  • Heritability estimates

What is the purpose of QTL mapping?

<p>To identify genetic regions that influence phenotypic variation (A)</p> Signup and view all the answers

What is the term for the variation in a trait that is due to environmental factors?

<p>Environmental variance (A)</p> Signup and view all the answers

According to Table 2, what is the estimated heritability of height?

<p>80% (A)</p> Signup and view all the answers

What is the main difference between quantitative trait loci (QTL) and heritability?

<p>QTL are genetic regions, while heritability is a measure of genetic influence (B)</p> Signup and view all the answers

What is the purpose of identifying quantitative trait loci (QTL)?

<p>To understand the genetic basis of complex traits (D)</p> Signup and view all the answers

What is the relationship between QTL and heritability?

<p>QTL influence heritability (D)</p> Signup and view all the answers

What is the benefit of studying the heritability of human traits?

<p>It helps us understand the genetic basis of complex traits (D)</p> Signup and view all the answers

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