The reason which makes calico cats almost invariably female. Introduction: Females have two X chromosomes due to which they have two copies of all the genes present on that chromosome whereas males carry only one copy of X chromosome due to which they have only one copy of the gene present on that chromosome. All female mammals contain a genetically inactive X chromosome which is known as the Barr body. The expression of gene products by the genes present on the X chromosome is equalized in both males and the females.

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Answer 1

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Chapter 7, Problem 16QP

Summary Introduction

To determine: The reason which makes calico cats almost invariably female.

Introduction: Females have two X chromosomes due to which they have two copies of all the genes present on that chromosome whereas males carry only one copy of X chromosome due to which they have only one copy of the gene present on that chromosome. All female mammals contain a genetically inactive X chromosome which is known as the Barr body. The expression of gene products by the genes present on the X chromosome is equalized in both males and the females.

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Answer 2

Question

Chapter 7, Problem 16QP

Summary Introduction

To determine: The reason which makes calico cats almost invariably female.

Introduction: Females have two X chromosomes due to which they have two copies of all the genes present on that chromosome whereas males carry only one copy of X chromosome due to which they have only one copy of the gene present on that chromosome. All female mammals contain a genetically inactive X chromosome which is known as the Barr body. The expression of gene products by the genes present on the X chromosome is equalized in both males and the females.

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Answer 3

Question

Chapter 7, Problem 16QP

Summary Introduction

To determine: The reason which makes calico cats almost invariably female.

Introduction: Females have two X chromosomes due to which they have two copies of all the genes present on that chromosome whereas males carry only one copy of X chromosome due to which they have only one copy of the gene present on that chromosome. All female mammals contain a genetically inactive X chromosome which is known as the Barr body. The expression of gene products by the genes present on the X chromosome is equalized in both males and the females.

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Answer 4

Question

Chapter 7, Problem 16QP

Summary Introduction

To determine: The reason which makes calico cats almost invariably female.

Introduction: Females have two X chromosomes due to which they have two copies of all the genes present on that chromosome whereas males carry only one copy of X chromosome due to which they have only one copy of the gene present on that chromosome. All female mammals contain a genetically inactive X chromosome which is known as the Barr body. The expression of gene products by the genes present on the X chromosome is equalized in both males and the females.

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Answer 5

Chapter 7, Problem 16QP

Summary Introduction

To determine: The reason which makes calico cats almost invariably female.

Introduction: Females have two X chromosomes due to which they have two copies of all the genes present on that chromosome whereas males carry only one copy of X chromosome due to which they have only one copy of the gene present on that chromosome. All female mammals contain a genetically inactive X chromosome which is known as the Barr body. The expression of gene products by the genes present on the X chromosome is equalized in both males and the females.

Answer 6

Chapter 7, Problem 16QP

Summary Introduction

To determine: The reason which makes calico cats almost invariably female.

Introduction: Females have two X chromosomes due to which they have two copies of all the genes present on that chromosome whereas males carry only one copy of X chromosome due to which they have only one copy of the gene present on that chromosome. All female mammals contain a genetically inactive X chromosome which is known as the Barr body. The expression of gene products by the genes present on the X chromosome is equalized in both males and the females.

Answer 7

Chapter 7, Problem 16QP

Summary Introduction

To determine: The reason which makes calico cats almost invariably female.

Introduction: Females have two X chromosomes due to which they have two copies of all the genes present on that chromosome whereas males carry only one copy of X chromosome due to which they have only one copy of the gene present on that chromosome. All female mammals contain a genetically inactive X chromosome which is known as the Barr body. The expression of gene products by the genes present on the X chromosome is equalized in both males and the females.

Answer 8

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Answer 11

Ch. 7.6 - Prob. 1EG Ch. 7.6 - Prob. 2EG Ch. 7 - As outlined in this chapter, sex can be defined at...Ch. 7 - As outlined in this chapter, sex can be defined at...Ch. 7 - Prob. 1QP Ch. 7 - The Human Reproductive System Discuss and compare...Ch. 7 - Prob. 3QP Ch. 7 - A Survey of Human Development from Fertilization...Ch. 7 - Prob. 5QP Ch. 7 - Prob. 6QP

Solution Summary: The author explains the reason why calico cats are invariably female. Females have two X chromosomes, whereas males carry only one copy of the gene.

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