The meaning of heterozygous and homozygous expression for a gene. Introduction : Genetic expression means the synthesis of proteins from genes. There are dominant and recessive genes present on the chromosomes. The dominant genes are expressed and the recessive genes are not expressed.

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Chapter 11.1, Problem 2CYL

Summary Introduction

To explain:

The meaning of heterozygous and homozygous expression for a gene.

Introduction:

Genetic expression means the synthesis of proteins from genes. There are dominant and recessive genes present on the chromosomes. The dominant genes are expressed and the recessive genes are not expressed.

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If someone is heterozygous for a particular gene, what specifically is different about each copy of the gene?

Consider three genes: X, Y, and Z. The X and Y genes are on the same chromosome; gene Y is on a different chromosome. An organism is heterozygous for all three genes. The cell’s parents were both homozygous for all three genes. This organism produces a gamete with the dominant X allele. Which of the following is true of this gamete? A. It is likely to have both the dominant Y and Z alleles. B. It is likely to also have the dominant Y allele but not necessarily the dominant Z allele. C. It is likely to also have the dominant Z allele but not necessarily the dominant Y allele. D. It is not more likely to have either the dominant Y or dominant Z alleles.

In man, muscular dystrophy is a condition in which the muscles waste away during early life and may result in a shorter life expectancy. It is due to a sex-linked, recessive gene. A certain couple has five children – three boys (ages 1yr, 3yrs, and 10yrs old) and two girls (ages 5yrs and 7yrs old). The oldest boy shows the symptoms of this disease. You are their family physician and they come to you for advice. What would you tell them about the chances of their other children developing the disease?

Answer 2

Question

Chapter 11.1, Problem 2CYL

Summary Introduction

To explain:

The meaning of heterozygous and homozygous expression for a gene.

Introduction:

Genetic expression means the synthesis of proteins from genes. There are dominant and recessive genes present on the chromosomes. The dominant genes are expressed and the recessive genes are not expressed.

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Answer 3

Question

Chapter 11.1, Problem 2CYL

Summary Introduction

To explain:

The meaning of heterozygous and homozygous expression for a gene.

Introduction:

Genetic expression means the synthesis of proteins from genes. There are dominant and recessive genes present on the chromosomes. The dominant genes are expressed and the recessive genes are not expressed.

Expert Solution & Answer

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Answer 4

Question

Chapter 11.1, Problem 2CYL

Summary Introduction

To explain:

The meaning of heterozygous and homozygous expression for a gene.

Introduction:

Genetic expression means the synthesis of proteins from genes. There are dominant and recessive genes present on the chromosomes. The dominant genes are expressed and the recessive genes are not expressed.

Expert Solution & Answer

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Answer 5

Chapter 11.1, Problem 2CYL

Summary Introduction

To explain:

The meaning of heterozygous and homozygous expression for a gene.

Introduction:

Genetic expression means the synthesis of proteins from genes. There are dominant and recessive genes present on the chromosomes. The dominant genes are expressed and the recessive genes are not expressed.

Answer 6

Chapter 11.1, Problem 2CYL

Summary Introduction

To explain:

The meaning of heterozygous and homozygous expression for a gene.

Introduction:

Genetic expression means the synthesis of proteins from genes. There are dominant and recessive genes present on the chromosomes. The dominant genes are expressed and the recessive genes are not expressed.

Answer 7

Chapter 11.1, Problem 2CYL

Summary Introduction

To explain:

The meaning of heterozygous and homozygous expression for a gene.

Introduction:

Genetic expression means the synthesis of proteins from genes. There are dominant and recessive genes present on the chromosomes. The dominant genes are expressed and the recessive genes are not expressed.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 11.1 - describe the relationships among chromosomes, DNA,...Ch. 11.1 - Prob. 2CYL Ch. 11.2 - distinguish between self-fertilization and...Ch. 11.2 - Prob. 2CYL Ch. 11.3 - Sudden Death on the court Many traits, in humans...Ch. 11.3 - describe the pattern of inheritance of a trait...Ch. 11.3 - Prob. 1TC Ch. 11.3 - Prob. 2CYL Ch. 11.3 - Prob. 3CYL Ch. 11.4 - Prob. 1CYL

The meaning of heterozygous and homozygous expression for a gene. Introduction : Genetic expression means the synthesis of proteins from genes. There are dominant and recessive genes present on the chromosomes. The dominant genes are expressed and the recessive genes are not expressed.

Solution Summary: The author explains the meaning of homozygous expression for a gene, stating that there are identical alleles on the same chromosome with sequence similarity in the nucleotides.

Concept explainers

Videos

To explain:

The meaning of heterozygous and homozygous expression for a gene.

Introduction:

Genetic expression means the synthesis of proteins from genes. There are dominant and recessive genes present on the chromosomes. The dominant genes are expressed and the recessive genes are not expressed.

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Chapter 11 Solutions

The meaning of heterozygous and homozygous expression for a gene. Introduction : Genetic expression means the synthesis of proteins from genes. There are dominant and recessive genes present on the chromosomes. The dominant genes are expressed and the recessive genes are not expressed.

Solution Summary: The author explains the meaning of homozygous expression for a gene, stating that there are identical alleles on the same chromosome with sequence similarity in the nucleotides.

Concept explainers

Videos

To explain: The meaning of heterozygous and homozygous expression for a gene. Introduction: Genetic expression means the synthesis of proteins from genes. There are dominant and recessive genes present on the chromosomes. The dominant genes are expressed and the recessive genes are not expressed.

Want to see the full answer?

Chapter 11 Solutions