Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 12, DNA - Assessment - 13.3 Mutations - Understand Key Concepts/Think Critically - Page 387: 19



Work Step by Step

Option a. is incorrect. The mRNA molecule should have uracil instead of thymine. Option b. is incorrect. According to the mRNA sequence given, there is no single-base mutation. Option c. is incorrect. The mRNA sequence given has several mutations, not just a single-base. Option d. is correct. The single-base mutation occurs where you see the first adenine (A). That adenine should have been a cytosine (C) instead.
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