Biology (11th Edition)

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

Chapter 25 - Evolution of Development - Figure 25.3 - Inquiry Question: 1

Answer

Since the broken version of CAL leads to arrest of floral/inflorescence development, its normal function must be to promote branching and further progress through flowering.

Work Step by Step

To figure out the function of a gene based on its effects as a mutant, look at how the mutant organism compares to the wild type. The missing function is probably, at least in part, supplied by the mutant gene when in its normal form.
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