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Quantitative Genetics: Study of Phenotypic Variation

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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?

To identify genetic regions that influence phenotypic variation Signup and view all the answers

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

Environmental variance Signup and view all the answers

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

80% Signup and view all the answers

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

QTL are genetic regions, while heritability is a measure of genetic influence Signup and view all the answers

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

To understand the genetic basis of complex traits Signup and view all the answers

What is the relationship between QTL and heritability?

QTL influence heritability Signup and view all the answers

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

It helps us understand the genetic basis of complex traits Signup and view all the answers