![subject](/tpl/images/cats/health.png)
Health, 21.12.2019 11:31 sierravick123owr441
Mosquitoes in tropical regions can carry and transmit the malaria parasite to humans. the mosquitoes used to be killed in these regions by spraying them with the insecticide ddt. the mosquitoes that were earlier sensitive to ddt are now not killed by ddt and grow and multiply even in the presence of ddt. how can you explain this phenomenon?
select one of the options below as your
a.
all of the mosquitoes must have undergone a mutation for ddt resistance and produced similar kind of resistant offspring, which evolved into a ddt resistant population.
b.
some of the
mosquitoes must have undergone a mutation for ddt resistance and produced similar kind of resistant offspring, which would have been selected by nature.
c.
all of the mosquitoes must have slowly increased their tolerance level to ddt and ultimately would have become completely resistant to ddt.
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Health
![question](/tpl/images/cats/health.png)
Health, 22.06.2019 23:40
Use the list below to answer the question: abnormal behavior criteria: • ? • distressing • dysfunctional to be diagnosed with a disorder, an individual must exhibit behavior that meets three criteria. what term completes the list? a. deviant b. diagnosed c. disturbing d. disabled (i think it’s disturbing but i’m not sure! if you know the answer pls comment and i’ll give brainliest if right)
Answers: 1
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/health.png)
Health, 23.06.2019 09:30
The age of receding pandemics is one of three progessive ages of epidemiologic transition. select one: true false
Answers: 2
![question](/tpl/images/cats/health.png)
Health, 23.06.2019 13:00
Where are teens exposed to ads about tobacco products? on the radio in magazines near schools on television
Answers: 2
You know the right answer?
Mosquitoes in tropical regions can carry and transmit the malaria parasite to humans. the mosquitoes...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2021 22:40
![question](/tpl/images/cats/en.png)
English, 05.02.2021 22:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 05.02.2021 22:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2021 22:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 05.02.2021 22:40
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2021 22:40
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2021 22:40
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 05.02.2021 22:40
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2021 22:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2021 22:40
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2021 22:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2021 22:40
![question](/tpl/images/cats/mat.png)
Mathematics, 05.02.2021 22:40