The narrow-sense heritability (h 2 ) for each trait in the given problem. Introduction: The contribution of genotypic variance concerning the total phenotypic variance is measured by broad-sense heritability (H 2 ). Narrow-sense heritability (h 2 ) is the cumulative genetic portion of phenotypic variance. The genotypic variance can be divided into subcomponents, which represent the different modes of the function of alleles at quantitative trait loci. Additive variance (V A ) is one of the subcomponents of genotypic variance. It is the genotypic variance that is the result of the cumulative function of alleles at quantitative trait loci.

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Chapter 25, Problem 14PDQ

(a)

Summary Introduction

To determine: The narrow-sense heritability (h²) for each trait in the given problem.

Introduction: The contribution of genotypic variance concerning the total phenotypic variance is measured by broad-sense heritability (H²). Narrow-sense heritability (h²) is the cumulative genetic portion of phenotypic variance. The genotypic variance can be divided into subcomponents, which represent the different modes of the function of alleles at quantitative trait loci. Additive variance (V_A) is one of the subcomponents of genotypic variance. It is the genotypic variance that is the result of the cumulative function of alleles at quantitative trait loci.

(b)

Summary Introduction

To determine: The trait that will respond likely to selection.

Introduction: The term heritability explains the ratio of the total phenotypic variation due to genetic components in a population. The values of heritability are used in animal and plant breeding to point the potential response of a population to artificial selection for a quantitative trait.

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A characteristic has a narrow-sense heritability of 0.6.a. If the dominance variance (VD) increases and all other variancecomponents remain the same, what will happen to narrow-senseheritability? Will it increase, decrease, or remain the same? Explain.b. What will happen to broad-sense heritability? Explain.c. If the environmental variance (VE) increases and all other variancecomponents remain the same, what will happen to narrow-senseheritability? Explain.d. What will happen to broad-sense heritability? Explain.

If no genetic variation was observed within a particular population for a given trait, what will be the computed broad sense heritability value for the trait in the population?

If the heritability of a trait is 0.7 and the selection differential is -10, what is the predicted response to selection?

Answer 2

Question

Chapter 25, Problem 14PDQ

(a)

Summary Introduction

To determine: The narrow-sense heritability (h²) for each trait in the given problem.

Introduction: The contribution of genotypic variance concerning the total phenotypic variance is measured by broad-sense heritability (H²). Narrow-sense heritability (h²) is the cumulative genetic portion of phenotypic variance. The genotypic variance can be divided into subcomponents, which represent the different modes of the function of alleles at quantitative trait loci. Additive variance (V_A) is one of the subcomponents of genotypic variance. It is the genotypic variance that is the result of the cumulative function of alleles at quantitative trait loci.

(b)

Summary Introduction

To determine: The trait that will respond likely to selection.

Introduction: The term heritability explains the ratio of the total phenotypic variation due to genetic components in a population. The values of heritability are used in animal and plant breeding to point the potential response of a population to artificial selection for a quantitative trait.

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Answer 3

Question

Chapter 25, Problem 14PDQ

(a)

Summary Introduction

To determine: The narrow-sense heritability (h²) for each trait in the given problem.

Introduction: The contribution of genotypic variance concerning the total phenotypic variance is measured by broad-sense heritability (H²). Narrow-sense heritability (h²) is the cumulative genetic portion of phenotypic variance. The genotypic variance can be divided into subcomponents, which represent the different modes of the function of alleles at quantitative trait loci. Additive variance (V_A) is one of the subcomponents of genotypic variance. It is the genotypic variance that is the result of the cumulative function of alleles at quantitative trait loci.

(b)

Summary Introduction

To determine: The trait that will respond likely to selection.

Introduction: The term heritability explains the ratio of the total phenotypic variation due to genetic components in a population. The values of heritability are used in animal and plant breeding to point the potential response of a population to artificial selection for a quantitative trait.

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Answer 4

Question

Chapter 25, Problem 14PDQ

(a)

Summary Introduction

To determine: The narrow-sense heritability (h²) for each trait in the given problem.

Introduction: The contribution of genotypic variance concerning the total phenotypic variance is measured by broad-sense heritability (H²). Narrow-sense heritability (h²) is the cumulative genetic portion of phenotypic variance. The genotypic variance can be divided into subcomponents, which represent the different modes of the function of alleles at quantitative trait loci. Additive variance (V_A) is one of the subcomponents of genotypic variance. It is the genotypic variance that is the result of the cumulative function of alleles at quantitative trait loci.

(b)

Summary Introduction

To determine: The trait that will respond likely to selection.

Introduction: The term heritability explains the ratio of the total phenotypic variation due to genetic components in a population. The values of heritability are used in animal and plant breeding to point the potential response of a population to artificial selection for a quantitative trait.

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Answer 5

Chapter 25, Problem 14PDQ

(a)

Summary Introduction

To determine: The narrow-sense heritability (h²) for each trait in the given problem.

Introduction: The contribution of genotypic variance concerning the total phenotypic variance is measured by broad-sense heritability (H²). Narrow-sense heritability (h²) is the cumulative genetic portion of phenotypic variance. The genotypic variance can be divided into subcomponents, which represent the different modes of the function of alleles at quantitative trait loci. Additive variance (V_A) is one of the subcomponents of genotypic variance. It is the genotypic variance that is the result of the cumulative function of alleles at quantitative trait loci.

(b)

Summary Introduction

To determine: The trait that will respond likely to selection.

Introduction: The term heritability explains the ratio of the total phenotypic variation due to genetic components in a population. The values of heritability are used in animal and plant breeding to point the potential response of a population to artificial selection for a quantitative trait.

Answer 6

Chapter 25, Problem 14PDQ

(a)

Summary Introduction

To determine: The narrow-sense heritability (h²) for each trait in the given problem.

Introduction: The contribution of genotypic variance concerning the total phenotypic variance is measured by broad-sense heritability (H²). Narrow-sense heritability (h²) is the cumulative genetic portion of phenotypic variance. The genotypic variance can be divided into subcomponents, which represent the different modes of the function of alleles at quantitative trait loci. Additive variance (V_A) is one of the subcomponents of genotypic variance. It is the genotypic variance that is the result of the cumulative function of alleles at quantitative trait loci.

Answer 7

Chapter 25, Problem 14PDQ

(a)

Summary Introduction

To determine: The narrow-sense heritability (h²) for each trait in the given problem.

Introduction: The contribution of genotypic variance concerning the total phenotypic variance is measured by broad-sense heritability (H²). Narrow-sense heritability (h²) is the cumulative genetic portion of phenotypic variance. The genotypic variance can be divided into subcomponents, which represent the different modes of the function of alleles at quantitative trait loci. Additive variance (V_A) is one of the subcomponents of genotypic variance. It is the genotypic variance that is the result of the cumulative function of alleles at quantitative trait loci.

Answer 8

(b)

Summary Introduction

To determine: The trait that will respond likely to selection.

Introduction: The term heritability explains the ratio of the total phenotypic variation due to genetic components in a population. The values of heritability are used in animal and plant breeding to point the potential response of a population to artificial selection for a quantitative trait.

Answer 9

(b)

Summary Introduction

To determine: The trait that will respond likely to selection.

Introduction: The term heritability explains the ratio of the total phenotypic variation due to genetic components in a population. The values of heritability are used in animal and plant breeding to point the potential response of a population to artificial selection for a quantitative trait.

Answer 10

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Answer 13

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Solution Summary: The author explains the term heritability, which is used in animal and plant breeding to point the potential response of a population to artificial selection.

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