Why do the alleles that confer insecticide resistance in mosquitoes become less frequent in the population when insecticide application is disconintued?
A)The mosquiotes experienced a bottle neck effect
B)The alleles were linked to a color variation that allowed for the mosquitoes that were resistant to have a higher rate of predation.
C)The population experienced genetic drift
D)The alleles for resistance had a negative fitness cost.

Question

Quizplus · Accepted Answer

The most likely reason for the decline in frequency of insecticide resistance alleles in mosquitoes after discontinuing insecticide application is because these alleles often come with a negative fitness cost in the absence of insecticide. This means that individuals with resistance alleles may be less fit than those without resistance alleles when insecticide is not present. Therefore, over time, natural selection favors individuals without the resistance alleles, causing them to become less frequent in the population.

Why Do the Alleles That Confer Insecticide Resistance in Mosquitoes