The reason due to which more number of males are affected by the red-green colorblindness as compared to females, with the help of a Punnett square. Introduction: Some of the traits in human genes are sex linked and therefore carried on sex chromosomes. These genes show a difference in their inheritance pattern from the genes located on the autosomes. One of the examples of sex-linked genes in humans is color blindness. The gene for red-green color blindness is carried on the X-chromosome, which results in the partial inheritance pattern in male and female, with males being more affected as compared to the females. The sex-linked inheritance can be recessive or dominant. A sex-linked dominant inheritance would result in all the offsprings affected if only a single copy of that gene is inherited. A recessive form of the allele causes the defect in the progeny only when the progeny inherits the defective copy in homozygous condition.

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Answer 1

Question

Chapter 12.4, Problem 3R

Summary Introduction

To review:

The reason due to which more number of males are affected by the red-green colorblindness as compared to females, with the help of a Punnett square.

Introduction:

Some of the traits in human genes are sex linked and therefore carried on sex chromosomes. These genes show a difference in their inheritance pattern from the genes located on the autosomes. One of the examples of sex-linked genes in humans is color blindness. The gene for red-green color blindness is carried on the X-chromosome, which results in the partial inheritance pattern in male and female, with males being more affected as compared to the females.

The sex-linked inheritance can be recessive or dominant. A sex-linked dominant inheritance would result in all the offsprings affected if only a single copy of that gene is inherited. A recessive form of the allele causes the defect in the progeny only when the progeny inherits the defective copy in homozygous condition.

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Answer 2

Question

Chapter 12.4, Problem 3R

Summary Introduction

To review:

The reason due to which more number of males are affected by the red-green colorblindness as compared to females, with the help of a Punnett square.

Introduction:

Some of the traits in human genes are sex linked and therefore carried on sex chromosomes. These genes show a difference in their inheritance pattern from the genes located on the autosomes. One of the examples of sex-linked genes in humans is color blindness. The gene for red-green color blindness is carried on the X-chromosome, which results in the partial inheritance pattern in male and female, with males being more affected as compared to the females.

The sex-linked inheritance can be recessive or dominant. A sex-linked dominant inheritance would result in all the offsprings affected if only a single copy of that gene is inherited. A recessive form of the allele causes the defect in the progeny only when the progeny inherits the defective copy in homozygous condition.

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Answer 3

Question

Chapter 12.4, Problem 3R

Summary Introduction

To review:

The reason due to which more number of males are affected by the red-green colorblindness as compared to females, with the help of a Punnett square.

Introduction:

Some of the traits in human genes are sex linked and therefore carried on sex chromosomes. These genes show a difference in their inheritance pattern from the genes located on the autosomes. One of the examples of sex-linked genes in humans is color blindness. The gene for red-green color blindness is carried on the X-chromosome, which results in the partial inheritance pattern in male and female, with males being more affected as compared to the females.

The sex-linked inheritance can be recessive or dominant. A sex-linked dominant inheritance would result in all the offsprings affected if only a single copy of that gene is inherited. A recessive form of the allele causes the defect in the progeny only when the progeny inherits the defective copy in homozygous condition.

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Answer 4

Question

Chapter 12.4, Problem 3R

Summary Introduction

To review:

The reason due to which more number of males are affected by the red-green colorblindness as compared to females, with the help of a Punnett square.

Introduction:

Some of the traits in human genes are sex linked and therefore carried on sex chromosomes. These genes show a difference in their inheritance pattern from the genes located on the autosomes. One of the examples of sex-linked genes in humans is color blindness. The gene for red-green color blindness is carried on the X-chromosome, which results in the partial inheritance pattern in male and female, with males being more affected as compared to the females.

The sex-linked inheritance can be recessive or dominant. A sex-linked dominant inheritance would result in all the offsprings affected if only a single copy of that gene is inherited. A recessive form of the allele causes the defect in the progeny only when the progeny inherits the defective copy in homozygous condition.

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Answer 5

Chapter 12.4, Problem 3R

Summary Introduction

To review:

The reason due to which more number of males are affected by the red-green colorblindness as compared to females, with the help of a Punnett square.

Introduction:

Some of the traits in human genes are sex linked and therefore carried on sex chromosomes. These genes show a difference in their inheritance pattern from the genes located on the autosomes. One of the examples of sex-linked genes in humans is color blindness. The gene for red-green color blindness is carried on the X-chromosome, which results in the partial inheritance pattern in male and female, with males being more affected as compared to the females.

The sex-linked inheritance can be recessive or dominant. A sex-linked dominant inheritance would result in all the offsprings affected if only a single copy of that gene is inherited. A recessive form of the allele causes the defect in the progeny only when the progeny inherits the defective copy in homozygous condition.

Answer 6

Chapter 12.4, Problem 3R

Summary Introduction

To review:

The reason due to which more number of males are affected by the red-green colorblindness as compared to females, with the help of a Punnett square.

Introduction:

Some of the traits in human genes are sex linked and therefore carried on sex chromosomes. These genes show a difference in their inheritance pattern from the genes located on the autosomes. One of the examples of sex-linked genes in humans is color blindness. The gene for red-green color blindness is carried on the X-chromosome, which results in the partial inheritance pattern in male and female, with males being more affected as compared to the females.

The sex-linked inheritance can be recessive or dominant. A sex-linked dominant inheritance would result in all the offsprings affected if only a single copy of that gene is inherited. A recessive form of the allele causes the defect in the progeny only when the progeny inherits the defective copy in homozygous condition.

Answer 7

Chapter 12.4, Problem 3R

Summary Introduction

To review:

The reason due to which more number of males are affected by the red-green colorblindness as compared to females, with the help of a Punnett square.

Introduction:

Some of the traits in human genes are sex linked and therefore carried on sex chromosomes. These genes show a difference in their inheritance pattern from the genes located on the autosomes. One of the examples of sex-linked genes in humans is color blindness. The gene for red-green color blindness is carried on the X-chromosome, which results in the partial inheritance pattern in male and female, with males being more affected as compared to the females.

The sex-linked inheritance can be recessive or dominant. A sex-linked dominant inheritance would result in all the offsprings affected if only a single copy of that gene is inherited. A recessive form of the allele causes the defect in the progeny only when the progeny inherits the defective copy in homozygous condition.

Answer 8

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Answer 11

Ch. 12.1 - Prob. 1R Ch. 12.1 - Prob. 2R Ch. 12.1 - Prob. 3R Ch. 12.1 - Prob. 4R Ch. 12.2 - Prob. 1R Ch. 12.2 - Prob. 2R Ch. 12.2 - Prob. 3R Ch. 12.3 - Prob. 1R Ch. 12.3 - Prob. 2R Ch. 12.3 - Prob. 3R

Solution Summary: The author illustrates the sex-linked recessive inheritance of the red-green color blindness trait in humans.

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