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17. Many mosquito populations today are resistant to pesticides that were historically effective. This pesticideresistance arose in these populations because:A) the pesticides caused mutations in the DNA of mosquitoes that conferred resistance phenotypes, and these werepassed on to subsequent generations.B) some individuals were resistant to the pesticides before they were used, and those mosquitoes were more likelyto survive and reproduce.C) populations had to develop tolerance in order to survive.D) individual mosquitoes built up immunity to the pesticides after exposure.E) mosquitoes from surrounding areas came into the pesticide area.
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