The way by which disorder inherited with well-defined reasons. Introduction: The genetic abnormalities which are transmitted from parents to the offsprings and then to their grandsons or granddaughters are referred to as the genetic disorders. Genetic diseases may be of two main types, the sex chromosomal and the autosomal derived diseases.

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Answer 1

Question

Chapter 2, Problem 50P

a.

Summary Introduction

To determine: The way by which disorder inherited with well-defined reasons.

Introduction: The genetic abnormalities which are transmitted from parents to the offsprings and then to their grandsons or granddaughters are referred to as the genetic disorders. Genetic diseases may be of two main types, the sex chromosomal and the autosomal derived diseases.

b.

Summary Introduction

To determine: The genotypes for many individuals in the given pedigree as possible.

Introduction: Dominant abnormalities are those who express their defects in their progenies dominantly. However, the recessive abnormalities can skip the generations as a healthy dominant gene can suppress the behavior of the recessive character.

c.

Summary Introduction

To determine: The expected proportion containing all unaffected children from the four unaffected children of parents III-4 and III-5.

Introduction: From the pedigree, if a cross is made between the affected and non-affected parents, the progenies produced as a result of the cross will be of both types, the dominant as well as the recessive type. Recessive progenies will be healthy that do not carry the abnormal genes. However, the dominant progenies will carry the diseased genes.

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Question #3: In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming there was just one gene conferring gametophytic obligate apomixis, and that the two parents are inbreds, what would be the consequences of such a cross if: a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the parental cross. b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the…

Question #5: Assume that two genes are identified that confer gametophytic facultative apomixis in soybean. The genes show independent assortment. Recessive alleles at both loci are required for the facultative apomixis. Facultative apomixis is triggered when the temperature at pollination is above 20 degrees C. At temperatures below 20 degrees C, all reproduction is sexual, independent of genotype. A facultative apomict male, capable of producing viable pollen, was crossed with a sexually reproducing female. Assuming the parents are completely inbred, what are the predicted phenotypic ratios (apomict: non-apomict) for the F1, F2, and DH (F1-derived) generations at each of the following temperatures*: a) 15°C? b) 25°C? *for full credit, show crosses and genotypes where appropriate. Remember to position the female first (left side) in the cross. Type your answer here:

Answer 2

Question

Chapter 2, Problem 50P

a.

Summary Introduction

To determine: The way by which disorder inherited with well-defined reasons.

Introduction: The genetic abnormalities which are transmitted from parents to the offsprings and then to their grandsons or granddaughters are referred to as the genetic disorders. Genetic diseases may be of two main types, the sex chromosomal and the autosomal derived diseases.

b.

Summary Introduction

To determine: The genotypes for many individuals in the given pedigree as possible.

Introduction: Dominant abnormalities are those who express their defects in their progenies dominantly. However, the recessive abnormalities can skip the generations as a healthy dominant gene can suppress the behavior of the recessive character.

c.

Summary Introduction

To determine: The expected proportion containing all unaffected children from the four unaffected children of parents III-4 and III-5.

Introduction: From the pedigree, if a cross is made between the affected and non-affected parents, the progenies produced as a result of the cross will be of both types, the dominant as well as the recessive type. Recessive progenies will be healthy that do not carry the abnormal genes. However, the dominant progenies will carry the diseased genes.

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Answer 3

Question

Chapter 2, Problem 50P

a.

Summary Introduction

To determine: The way by which disorder inherited with well-defined reasons.

Introduction: The genetic abnormalities which are transmitted from parents to the offsprings and then to their grandsons or granddaughters are referred to as the genetic disorders. Genetic diseases may be of two main types, the sex chromosomal and the autosomal derived diseases.

b.

Summary Introduction

To determine: The genotypes for many individuals in the given pedigree as possible.

Introduction: Dominant abnormalities are those who express their defects in their progenies dominantly. However, the recessive abnormalities can skip the generations as a healthy dominant gene can suppress the behavior of the recessive character.

c.

Summary Introduction

To determine: The expected proportion containing all unaffected children from the four unaffected children of parents III-4 and III-5.

Introduction: From the pedigree, if a cross is made between the affected and non-affected parents, the progenies produced as a result of the cross will be of both types, the dominant as well as the recessive type. Recessive progenies will be healthy that do not carry the abnormal genes. However, the dominant progenies will carry the diseased genes.

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Answer 4

Question

Chapter 2, Problem 50P

a.

Summary Introduction

To determine: The way by which disorder inherited with well-defined reasons.

Introduction: The genetic abnormalities which are transmitted from parents to the offsprings and then to their grandsons or granddaughters are referred to as the genetic disorders. Genetic diseases may be of two main types, the sex chromosomal and the autosomal derived diseases.

b.

Summary Introduction

To determine: The genotypes for many individuals in the given pedigree as possible.

Introduction: Dominant abnormalities are those who express their defects in their progenies dominantly. However, the recessive abnormalities can skip the generations as a healthy dominant gene can suppress the behavior of the recessive character.

c.

Summary Introduction

To determine: The expected proportion containing all unaffected children from the four unaffected children of parents III-4 and III-5.

Introduction: From the pedigree, if a cross is made between the affected and non-affected parents, the progenies produced as a result of the cross will be of both types, the dominant as well as the recessive type. Recessive progenies will be healthy that do not carry the abnormal genes. However, the dominant progenies will carry the diseased genes.

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Answer 5

Chapter 2, Problem 50P

a.

Summary Introduction

To determine: The way by which disorder inherited with well-defined reasons.

Introduction: The genetic abnormalities which are transmitted from parents to the offsprings and then to their grandsons or granddaughters are referred to as the genetic disorders. Genetic diseases may be of two main types, the sex chromosomal and the autosomal derived diseases.

b.

Summary Introduction

To determine: The genotypes for many individuals in the given pedigree as possible.

Introduction: Dominant abnormalities are those who express their defects in their progenies dominantly. However, the recessive abnormalities can skip the generations as a healthy dominant gene can suppress the behavior of the recessive character.

c.

Summary Introduction

To determine: The expected proportion containing all unaffected children from the four unaffected children of parents III-4 and III-5.

Introduction: From the pedigree, if a cross is made between the affected and non-affected parents, the progenies produced as a result of the cross will be of both types, the dominant as well as the recessive type. Recessive progenies will be healthy that do not carry the abnormal genes. However, the dominant progenies will carry the diseased genes.

Answer 6

Chapter 2, Problem 50P

a.

Summary Introduction

To determine: The way by which disorder inherited with well-defined reasons.

Introduction: The genetic abnormalities which are transmitted from parents to the offsprings and then to their grandsons or granddaughters are referred to as the genetic disorders. Genetic diseases may be of two main types, the sex chromosomal and the autosomal derived diseases.

Answer 7

Chapter 2, Problem 50P

a.

Summary Introduction

To determine: The way by which disorder inherited with well-defined reasons.

Introduction: The genetic abnormalities which are transmitted from parents to the offsprings and then to their grandsons or granddaughters are referred to as the genetic disorders. Genetic diseases may be of two main types, the sex chromosomal and the autosomal derived diseases.

Answer 8

b.

Summary Introduction

To determine: The genotypes for many individuals in the given pedigree as possible.

Introduction: Dominant abnormalities are those who express their defects in their progenies dominantly. However, the recessive abnormalities can skip the generations as a healthy dominant gene can suppress the behavior of the recessive character.

Answer 9

b.

Summary Introduction

To determine: The genotypes for many individuals in the given pedigree as possible.

Introduction: Dominant abnormalities are those who express their defects in their progenies dominantly. However, the recessive abnormalities can skip the generations as a healthy dominant gene can suppress the behavior of the recessive character.

Answer 10

c.

Summary Introduction

To determine: The expected proportion containing all unaffected children from the four unaffected children of parents III-4 and III-5.

Introduction: From the pedigree, if a cross is made between the affected and non-affected parents, the progenies produced as a result of the cross will be of both types, the dominant as well as the recessive type. Recessive progenies will be healthy that do not carry the abnormal genes. However, the dominant progenies will carry the diseased genes.

Answer 11

c.

Summary Introduction

To determine: The expected proportion containing all unaffected children from the four unaffected children of parents III-4 and III-5.

Introduction: From the pedigree, if a cross is made between the affected and non-affected parents, the progenies produced as a result of the cross will be of both types, the dominant as well as the recessive type. Recessive progenies will be healthy that do not carry the abnormal genes. However, the dominant progenies will carry the diseased genes.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 2 - Prob. 1P Ch. 2 - Prob. 2P Ch. 2 - Prob. 3P Ch. 2 - Prob. 4P Ch. 2 - Prob. 6P Ch. 2 - Prob. 7P Ch. 2 - Prob. 8P Ch. 2 - Prob. 9P Ch. 2 - Prob. 10P Ch. 2 - Prob. 11P

Solution Summary: The author explains the genetic disorders that are transmitted from parents to offspring and then to their grandchildren. The dominant disorder is the type of sex chromosomal defect, as an abnormality is transferred to all the generation without

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