Biology (11th Edition)

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

Chapter 17 - Biotechnology - Review Questions - Understand: 1

Answer

C.

Work Step by Step

The gene needs to be lost at some point, eliminating B., and since it requires B. to be true, D. The heart will need to develop, so the gene must be present at some time, which would not be true for A., but could be true for a conditional knockout (C.).
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