Duplication is a type of gene mutation which causes a certain section of the chromosome to be repeated. A copy of a gene is repeated and this causes a change in the overall structure of the chromosome. They are caused due to non-allelic homologous recombination.

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Chapter 8.3, Problem 2COMQ

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Duplication is a type of gene mutation which causes a certain section of the chromosome to be repeated. A copy of a gene is repeated and this causes a change in the overall structure of the chromosome. They are caused due to non-allelic homologous recombination.

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With regard to gene duplications, which of the following statement(s) is/are correct?a. Gene duplications may be caused by nonallelic homologousrecombination.b. Large gene duplications are more likely to be harmful thansmaller ones.c. Gene duplications are responsible for creating gene familiesthat encode proteins with similar and specialized functions.d. All of the above statements are correct.

You are studying four linked genes located on chromosome 2 in the fruit fly Drosophila melanogaster: adp (which contributes to obesity), b (which contributes to body color), pr (which contributes to metabolism), and vg (which contributes to wing formation). A series of crosses between pair-wise combinations of these mutations yielded the following recombination frequencies between the indicated loci: pr and adp 9% adp and b 6% pr and b 3% vg and b 10% vg and pr 7% What is the genetic distance in map units (cM) between the adp and vg loci? 16 9 6 4

Ensure answers are clearly labelled a) & b). a) Consider the following pedigree. The solid symbols represent affected individuals. Which of the following is / are possible genotypes for II-2 with respect to this disease? Please type 1 - 4, and indicate yes or no only for each. II III 1. xAxa 2. xaxa 3. Aa 4. AA2 b) Genes A, B and C are on the same chromosome linked in cis (coupling) conformation. A'is 16 cM from B, and B is 22 cM from C. The distance between A and C is 38 cM. The coefficient of coincidence is 0.55 for a trihybrid test cross. How many individuals with the genotype AabbCc do you expect to see among the offspring of the cross if 1000 offspring are obtained? Please show your calculations and round your answer off to the nearest whole number.

Answer 2

Question

Chapter 8.3, Problem 2COMQ

Summary Introduction

Introduction:

Duplication is a type of gene mutation which causes a certain section of the chromosome to be repeated. A copy of a gene is repeated and this causes a change in the overall structure of the chromosome. They are caused due to non-allelic homologous recombination.

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Answer 3

Question

Chapter 8.3, Problem 2COMQ

Summary Introduction

Introduction:

Duplication is a type of gene mutation which causes a certain section of the chromosome to be repeated. A copy of a gene is repeated and this causes a change in the overall structure of the chromosome. They are caused due to non-allelic homologous recombination.

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Answer 4

Question

Chapter 8.3, Problem 2COMQ

Summary Introduction

Introduction:

Duplication is a type of gene mutation which causes a certain section of the chromosome to be repeated. A copy of a gene is repeated and this causes a change in the overall structure of the chromosome. They are caused due to non-allelic homologous recombination.

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Answer 5

Chapter 8.3, Problem 2COMQ

Summary Introduction

Introduction:

Duplication is a type of gene mutation which causes a certain section of the chromosome to be repeated. A copy of a gene is repeated and this causes a change in the overall structure of the chromosome. They are caused due to non-allelic homologous recombination.

Answer 6

Chapter 8.3, Problem 2COMQ

Summary Introduction

Introduction:

Duplication is a type of gene mutation which causes a certain section of the chromosome to be repeated. A copy of a gene is repeated and this causes a change in the overall structure of the chromosome. They are caused due to non-allelic homologous recombination.

Answer 7

Chapter 8.3, Problem 2COMQ

Summary Introduction

Introduction:

Duplication is a type of gene mutation which causes a certain section of the chromosome to be repeated. A copy of a gene is repeated and this causes a change in the overall structure of the chromosome. They are caused due to non-allelic homologous recombination.

Answer 8

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Answer 11

Ch. 8.1 - 1. A chromosome that is metacentric has its...Ch. 8.1 - Staining eukaryotic chromosomes is useful because...Ch. 8.2 - Prob. 1COMQ Ch. 8.3 - Which of the following statements is correct? a....Ch. 8.3 - Prob. 2COMQ Ch. 8.4 - 1. A paracentric inversion a. includes the...Ch. 8.4 - Due to crossing over within an inversion loop, a...Ch. 8.4 - 3. A mechanism that may cause a translocation is...Ch. 8.5 - 1. Humans have 23 chromosomes per set. A person...Ch. 8.6 - Prob. 1COMQ

Duplication is a type of gene mutation which causes a certain section of the chromosome to be repeated. A copy of a gene is repeated and this causes a change in the overall structure of the chromosome. They are caused due to non-allelic homologous recombination.

Solution Summary: The author concludes that gene duplication is a lengthy and complex process which includes the formation of gene families due to repeating units and an increase in the gene amount.

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Introduction:

Duplication is a type of gene mutation which causes a certain section of the chromosome to be repeated. A copy of a gene is repeated and this causes a change in the overall structure of the chromosome. They are caused due to non-allelic homologous recombination.

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Chapter 8 Solutions

Duplication is a type of gene mutation which causes a certain section of the chromosome to be repeated. A copy of a gene is repeated and this causes a change in the overall structure of the chromosome. They are caused due to non-allelic homologous recombination.

Solution Summary: The author concludes that gene duplication is a lengthy and complex process which includes the formation of gene families due to repeating units and an increase in the gene amount.

Concept explainers

Videos

Introduction: Duplication is a type of gene mutation which causes a certain section of the chromosome to be repeated. A copy of a gene is repeated and this causes a change in the overall structure of the chromosome. They are caused due to non-allelic homologous recombination.

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Chapter 8 Solutions

Introduction:

Duplication is a type of gene mutation which causes a certain section of the chromosome to be repeated. A copy of a gene is repeated and this causes a change in the overall structure of the chromosome. They are caused due to non-allelic homologous recombination.