Evolutionary Analysis (5th Edition)
5th Edition
ISBN: 9780321616678
Author: Jon C. Herron, Scott Freeman
Publisher: PEARSON
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Chapter 1, Problem 4Q
Given the risk of evolution of resistance, why do you think the two patients shown in Figure 1.11 were not given high doses of AZT immediately, rather than starting them with low doses?
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A group of researchers at Cornell University tested these three strategies to see
which would be most effective retarding the evolution of diamondback moths to Bt-
broccoli plants. Cry1Ac and Cry1C were the two types of Bt toxins used.
In the mosaic strategy, 40% of the field had Cry1 Ac plants and 40% had Cry1C plants.
The remaining 20% of the field was plants without any toxin.
In the sequential treatment, 80% of the field consisted Cry1Ac plants for 12
generations, with 20% with plants lacking toxins. Then at generation 13, 80% of the
field was Cry1C plants, with 20% with plants without toxins.
In the pyramiding strategy, 80% of the field had plants with both the CrylC and
Cry1Ac toxins, and 20% of the field had plants without any toxins
QUESTIONS
Question 1. You may have noticed that in each of the three treatments, a portion
(20%) of the field contained plants without any toxins. Leaving parts of the planted
field pesticide-free (refuges) is common practice in biological control…
Chapter 1 Solutions
Evolutionary Analysis (5th Edition)
Ch. 1 - Prob. 1QCh. 1 - Prob. 2QCh. 1 - Prob. 3QCh. 1 - Given the risk of evolution of resistance, why do...Ch. 1 - Prob. 5QCh. 1 - Prob. 6QCh. 1 - In a monograph published in 1883, Alexander Graham...Ch. 1 - Design a study to test our prediction that human...Ch. 1 - Prob. 9QCh. 1 - Suppose that HIV were the ancestor of the SIVs,...
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