Human Heredity: Principles and Iss...

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



Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052
Chapter 10, Problem 1QP
Textbook Problem

Many individuals with metabolic diseases are normal at birth but show symptoms shortly thereafter. Why?

Summary Introduction

To explain: The reason for many individuals with metabolic disease being normal at birth but showing symptoms shortly thereafter.

Introduction: Metabolic diseases are caused because of one or more than one faulty proteins (mainly enzymes) or due to deficiency of an enzyme. This fault or deficiency of proteins causes abnormal functioning of that enzyme. Metabolic pathways are affected if a person is suffering from some metabolic disorder. Children suffering from a metabolic disorder appear normal at birth but later on start developing symptoms for the disease.

Explanation of Solution

Metabolic disorders affect the normal metabolic pathways due non-functioning of enzymes that mediate metabolic processes. Children suffering from metabolic disorders generally appear to be normal at the time of birth, but later on they start showing metabolic abnormalities. One of the common reasons for this is that before birth, the fetus uses the maternal enzymes to carry out their own metabolic activities...

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