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Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052

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BuyFindarrow_forward

Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052
Chapter 5, Problem 20QP
Textbook Problem
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What does the ob gene code for? How does it work? Is this a gene found only in animals, or do humans have it also?

Summary Introduction

To determine: The coding product of gene ‘ob.’

Introduction: Obesity is a metabolic disorder characterized by abnormal weight gain. It is regulated by both environmental and genetic factors. The study of genes regulating body weight was conducted first in mice. Two genes that control body weight in mice are ‘ob’ and ‘db.’

Explanation of Solution

The genes that control body weight in mice were identified, isolated, cloned, and analyzed. The gene that controls weight in mice is known as gene obese or ‘ob.’ This gene codes for weight-controlling hormone ‘leptin...

Summary Introduction

To determine: The working of the ob gene.

Introduction: Obesity in mice is controlled by two genes ob and db. The ob gene is responsible for coding the weight-controlling hormone leptin. This hormone is produced in the fat cells. The db gene is the diabetes gene which is involved in encoding the surface receptors for leptin.

Summary Introduction

To determine: Whether the ob gene is present in animals only or it is present in humans also.

Introduction: Obesity in mice is controlled by two genes ob and db. The ob gene is responsible for coding the weight-controlling hormone leptin. This hormone is produced in the fat cells. The db gene is the diabetes gene which is involved in encoding the surface receptors for leptin.

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