Answer
B.
Work Step by Step
The AP and DV axes in Drosophila both are made using morphogen gradients, but in one case is is RNA and in the other it is protein, making B. correct. A., C., and D. each contradict one part of the correct explanation.
Biology (11th Edition)
by Raven, Peter; Johnson, George; Mason, Kenneth; Losos, Jonathan; Singer, Susan
Published by
McGraw-Hill Education
ISBN 10:
1259188132
ISBN 13:
978-1-25918-813-8
Chapter 19 - Cellular Mechanisms of Development - Review Questions - Apply - Page 397: 3
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