Insect Species Resistance DOT in
1550
Resistance to DDT In
100
Bestance Lo DDT IN
CD
Anagnetes ambae
Aapees up
189
494
DDT is a synthetic compound commonly used as an insecticide. It was used to control mosquito species that
commonly spread diseases like malaria. The data show the percent resistance for three species of mosquitoes ov
three decades. What explains the trend seen in the data?
Genetic drift resulted in the random deaths of non-resistant insects.
leaving only resistant mosquitoes to breed.
B
Artificial selection favored genotypes that were bred by humans to
maintain the desired traits in the mosquito populations,
Gene flow between the three species increased the genetie diversity of the
populations, resulting in more DDT-resistant species over time
D
Natural selection favored resistant members of the species wah surved
and reproduced at a greater frequency than non-resistant mosquitoesi
eristeated with antant brot Because of a
bacteria at isa