Biology (11th Edition)

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

Chapter 14 - DNA: The Genetic Material - Review Questions - Apply: 2

Answer

B.

Work Step by Step

S labels protein, since it is not in DNA, while P labels DNA's backbone but is not found in protein. Thus, these two radioactive labels could differentiate these two candidates for the genetic molecule (B.). A. says the opposite of this, and C. was the goal of the work, not a fact used by Hershey and Chase. D. is wrong since C. is wrong.
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