Biology: The Unity and Diversity of Life (14th Edition)

Published by Brooks/Cole Publishing Co.
ISBN 10: 1305073959
ISBN 13: 978-1-30507-395-1

Chapter 17 - Data Analysis Activities - Page 291: 2

Answer

Stadtlohn

Work Step by Step

In Stadtlohn, the percentage of rats that were poison-resistant to either warfarin and/or bromadiolone is the sum of rats resistant to both poisons and rats resistant to only bromadiolone. This percentage, 95 percent, represents the highest percentage of poison-resistant rats among the five towns tested. In Olfen, the number of poison-resistant rats amounts to the sum of rats resistant to both poisons and those resistant to only bromadiolone. This sum amounted to 79 percent. Dorsten only had 56 percent of its rat population resistant to warfarin. In Drensteinfurt, 10 percent of its wild rat population were resistant to either warfarin or both poisons.
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