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 14, Problem 6QP
Textbook Problem

Genetically Modified Foods

“Golden” rice strains are transgenic crops that have been genetically engineered to produce elevated levels of beta-carotene. These strains were developed to help prevent:

  1. a. tuberculosis
  2. b. malaria
  3. c. vitamin A deficiency
  4. d. protein deficiency
  5. e. hypertension

Summary Introduction

Introduction: In classical breeding techniques, transfer of hundreds to thousands of genes takes place to develop transgenic crops. These days, however, methods of biotechnology such as recombinant DNA techniques are used to develop transgenic plants at a faster and more precise rate with desired traits such as pest resistance. Genetically modified plants are the plants which are produced by the methods of recombinant DNA technology.

Explanation of Solution

Reason for correct answer:

Vitamin A deficient diet is a serious health problem, primarily in continents like Asia. In order to combat this problem rice strains were genetically modified to produce beta-carotene which is a vitamin A precursor. These rice strains are developed to overcome the deficiency of vitamin A in the diet as the beta-carotene synthesized by these strains is converted into vitamin A by the body.

Option c. is given as “vitamin A deficiency”

Golden rice strains produce elevated levels of beta-carotene which aids in combating vitamin A deficiency. Hence, the correct answer is option c.

Reasons for incorrect answer:

Option a. is given as, “tuberculosis”.

Tuberculosis is a disease which is caused by the microorganisms. Tuberculosis is not caused due to nutrient deficiency and as beta-carotene enriched rice are used to combat vitamin A deficiency it cannot be used to prevent tuberculosis. Hence, option a. is incorrect.

Option b. is given as, “malaria”...

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