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ceybe ceybe
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6 years ago
This chapter's essay explains that the membrane protein involved in cystic fibrosis confers resistance to typhoid fever. Imagine that a drug-resistant form of typhoid fever becomes common worldwide, killing a significant proportion of the human population over a period of several decades. Which of the following would you expect to observe in the world population during this period?
A) no change in the frequency of cystic fibrosis
B) decrease in the frequency of cystic fibrosis
C) increase in the frequency of cystic fibrosis
Textbook 
Biological Science, Canadian Edition

Biological Science, Canadian Edition


Edition: 2nd
Authors:
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ShadiasShadias
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6 years ago
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ceybe Author
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6 years ago
Thanks
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Yesterday
Just got PERFECT on my quiz
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2 hours ago
You make an excellent tutor!
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