Polygenic inheritance is the condition where the character is controlled by the effect of more than one gene. Introduction. The different forms of an allele in two organisms of the species can result in changes in their appearance even though their genetic composition is highly similar. These are gene polymorphisms that account for the change in the appearance of genetically similar organisms.

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Answer 1

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Chapter 3, Problem 53P

a.

Summary Introduction

To determine: Polygenic inheritance is the condition where the character is controlled by the effect of more than one gene.

Introduction. The different forms of an allele in two organisms of the species can result in changes in their appearance even though their genetic composition is highly similar. These are gene polymorphisms that account for the change in the appearance of genetically similar organisms.

b.

Summary Introduction

To determine: The number of phenotypic classes corresponding to the number of polygene doses expected in selfs of strains with six heterozygous polygenes.

Introduction. Multiple allelism is the condition where one character or trait is controlled by various alleles and not just the two alleles.

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Using designations "Group A", “Group B," etc., organize the mutant strains into complementation groups. If the result of any cross does not fit your groupings, indicate which cross(es) you have excluded. Consider the consequence if one of the mutations was dominant. You should see that complementation tests could not be used to provide information about dominant mutations. a) If a mutation were dominant, how would the diploid be affected? What effect would this have on the determination of your complementation groups? b) How would you test if any of these trp¯ mutations were dominant?

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A researcher crosses mice with brown eyes and long tails, and the F1 progeny were recovered in the following numbers and phenotypic classes: F1: 6 apricot, short : 30 brown, long : 15 brown, short : 9 apricot, long You know the genes encoding these traits are autosomal, completely dominant and assort independently. You want to use a chi-square test to analyse these results. a) Making use of the appropriate genetic convention for naming alleles, give the genotype of the male parent in this cross. b) What is your null hypothesis for the chi-square test? c) Give the expected number of individuals in the "brown, long" class. d) You obtain a value of 3.47 for the chi-square test. What conclusion can you make from the results of the chi-square test? P df 0.995 0.975 0.9 0.5 0.1 0.05* 0.025 0.01 0.005 1 0.000 0.000 0.016 0.455 2.706 3.841 5.024 6.635 7.879 2 0.010 0.051 0.211 1.386 4.605 5.991 7.378 9.210 10.597 0.072 0.216 0.584 2.366 6.251 7.815 9.348 11.345 12.838 4 0.207 0.484 1.064 3.357…

Answer 2

Question

Chapter 3, Problem 53P

a.

Summary Introduction

To determine: Polygenic inheritance is the condition where the character is controlled by the effect of more than one gene.

Introduction. The different forms of an allele in two organisms of the species can result in changes in their appearance even though their genetic composition is highly similar. These are gene polymorphisms that account for the change in the appearance of genetically similar organisms.

b.

Summary Introduction

To determine: The number of phenotypic classes corresponding to the number of polygene doses expected in selfs of strains with six heterozygous polygenes.

Introduction. Multiple allelism is the condition where one character or trait is controlled by various alleles and not just the two alleles.

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Answer 3

Question

Chapter 3, Problem 53P

a.

Summary Introduction

To determine: Polygenic inheritance is the condition where the character is controlled by the effect of more than one gene.

Introduction. The different forms of an allele in two organisms of the species can result in changes in their appearance even though their genetic composition is highly similar. These are gene polymorphisms that account for the change in the appearance of genetically similar organisms.

b.

Summary Introduction

To determine: The number of phenotypic classes corresponding to the number of polygene doses expected in selfs of strains with six heterozygous polygenes.

Introduction. Multiple allelism is the condition where one character or trait is controlled by various alleles and not just the two alleles.

Expert Solution & Answer

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Answer 4

Question

Chapter 3, Problem 53P

a.

Summary Introduction

To determine: Polygenic inheritance is the condition where the character is controlled by the effect of more than one gene.

Introduction. The different forms of an allele in two organisms of the species can result in changes in their appearance even though their genetic composition is highly similar. These are gene polymorphisms that account for the change in the appearance of genetically similar organisms.

b.

Summary Introduction

To determine: The number of phenotypic classes corresponding to the number of polygene doses expected in selfs of strains with six heterozygous polygenes.

Introduction. Multiple allelism is the condition where one character or trait is controlled by various alleles and not just the two alleles.

Expert Solution & Answer

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Answer 5

Chapter 3, Problem 53P

a.

Summary Introduction

To determine: Polygenic inheritance is the condition where the character is controlled by the effect of more than one gene.

Introduction. The different forms of an allele in two organisms of the species can result in changes in their appearance even though their genetic composition is highly similar. These are gene polymorphisms that account for the change in the appearance of genetically similar organisms.

b.

Summary Introduction

To determine: The number of phenotypic classes corresponding to the number of polygene doses expected in selfs of strains with six heterozygous polygenes.

Introduction. Multiple allelism is the condition where one character or trait is controlled by various alleles and not just the two alleles.

Answer 6

Chapter 3, Problem 53P

a.

Summary Introduction

To determine: Polygenic inheritance is the condition where the character is controlled by the effect of more than one gene.

Introduction. The different forms of an allele in two organisms of the species can result in changes in their appearance even though their genetic composition is highly similar. These are gene polymorphisms that account for the change in the appearance of genetically similar organisms.

Answer 7

Chapter 3, Problem 53P

a.

Summary Introduction

To determine: Polygenic inheritance is the condition where the character is controlled by the effect of more than one gene.

Introduction. The different forms of an allele in two organisms of the species can result in changes in their appearance even though their genetic composition is highly similar. These are gene polymorphisms that account for the change in the appearance of genetically similar organisms.

Answer 8

b.

Summary Introduction

To determine: The number of phenotypic classes corresponding to the number of polygene doses expected in selfs of strains with six heterozygous polygenes.

Introduction. Multiple allelism is the condition where one character or trait is controlled by various alleles and not just the two alleles.

Answer 9

b.

Summary Introduction

To determine: The number of phenotypic classes corresponding to the number of polygene doses expected in selfs of strains with six heterozygous polygenes.

Introduction. Multiple allelism is the condition where one character or trait is controlled by various alleles and not just the two alleles.

Answer 10

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Answer 11

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Answer 12

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Answer 13

Ch. 3 - Prob. 1P Ch. 3 - Prob. 2P Ch. 3 - Prob. 3P Ch. 3 - Prob. 4P Ch. 3 - Prob. 5P Ch. 3 - Prob. 6P Ch. 3 - Prob. 7P Ch. 3 - Prob. 8P Ch. 3 - Prob. 9P Ch. 3 - Prob. 10P

Solution Summary: The author explains that polygenic inheritance is the condition where the character is controlled by the effect of more than one gene.

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To determine: The number of phenotypic classes corresponding to the number of polygene doses expected in selfs of strains with six heterozygous polygenes.

Introduction. Multiple allelism is the condition where one character or trait is controlled by various alleles and not just the two alleles.

Want to see the full answer?

Chapter 3 Solutions

Solution Summary: The author explains that polygenic inheritance is the condition where the character is controlled by the effect of more than one gene.

Concept explainers

Videos

To determine: The number of phenotypic classes corresponding to the number of polygene doses expected in selfs of strains with six heterozygous polygenes. Introduction. Multiple allelism is the condition where one character or trait is controlled by various alleles and not just the two alleles.

Want to see the full answer?

Chapter 3 Solutions

To determine: The number of phenotypic classes corresponding to the number of polygene doses expected in selfs of strains with six heterozygous polygenes.

Introduction. Multiple allelism is the condition where one character or trait is controlled by various alleles and not just the two alleles.