Biology (11th Edition)

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

Chapter 10 - How Cells Divide - Review Questions - Synthesize: 1

Answer

The phenotype of Wee-1 mutant yeast cells would be tiny, which is the basis of the name "Wee."

Work Step by Step

Without Wee-1 protein, yeast cells would have cdc2 active all of the time, meaning that cells would rapidly pass through the G2/M checkpoint to mitosis. Cells would no enlarge during G2 as it would be shortened, and after each round of cell division, cells would be become smaller, more "wee."
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