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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 5.5, Problem 2GR
Textbook Problem
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What are the possible advantages or disadvantages to the organism or its offspring resulting from DNA modification by environmental factors?

Summary Introduction

To determine: The possible advantages or disadvantages to the organism or its offspring resulting from DNA modification by environmental factors.

Introduction: Environmental factors interact with the genotype to produce the phenotype. These factors can affect the pattern of gene expression during the development of the nervous system. Spina bifida is an example of the neural tube defect.

Explanation of Solution

The DNA modifications induced by the environmental factors are the temporary modifications which are pertained to the single individual. The changes in the DNA are not heritable, which means that the modifications induced by the environmental factors are restricted to one generation. This causes no transmission of negative and positive modification in genes from one generation to the next.

The advantage of DNA modification caused by environmental factors is as follows:

  • The negative modification of the DNA caused by environmental factors is not transmitted to the next generation...

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