Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 19, Problem 6TYU
SCIENTIFIC INQUIRY
DRAW IT Mosquitoes resistant to the pesticide DDT first appeared in India in 1959, but now are found throughout the world. (a) Graph the data in the table below. (b) Examining the graph, hypothesize why the percentage of mosquitoes resistant to DDT rose rapidly. (c) Suggest an explanation for the global spread of DDT resistance
| Month | 0 | 8 | 12 |
| Mosquitoes Resistant* to DDT | 4% | 45% | 77% |
Data From C. F. Curtis et al., Selection for and against insecticide resistance and possible methods of inhibiting the evolution of resistance in mosquitoes, Ecological Entomology 3:273–287 (1978).
*Mosquitoes were considered resistant if they were not killed within 1 hour of receiving a dose of 4% DDT.
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Chapter 19 Solutions
Campbell Biology in Focus
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