Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1-25918-813-2
ISBN 13: 978-1-25918-813-8

Chapter 19 - Cellular Mechanisms of Development - Review Questions - Apply: 6

Answer

C.

Work Step by Step

Since bcl-2 acts to repress apoptosis, mutating the bcl-2 gene would likely turn off its activity and allow more apoptosis (C.), which is the opposite of B. A. says that nothing would change, which is not possible when altering the action of a regulatory gene. D. can be eliminated since there is no reason why this mutation would lead to a roller coaster change in apoptosis.
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