Biology (11th Edition)

Published by McGraw-Hill Education
ISBN 10: 1259188132
ISBN 13: 978-1-25918-813-8

Chapter 15 - Genes and How They Work - Review Questions - Understand - Page 303: 1

Answer

D.

Work Step by Step

A. is wrong since it was known and was an assumption at the start of the experiment, and B. was also used at the start of the experiment to make the mutant strains. C. was also well known before hand and, thus, can be eliminated.
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