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Humans have promoted the evolution of insects that are resistant to insecticides by?
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∙ 11y ago
trying to control pests with chemical
Wiki User
∙ 11y ago
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Humans have inadvertently promoted the evolution of insects that are resistant to insecticides by?
Insects became resistant because the insecticides were used on the continuously. Most insects will die at first, but there will be some that have the right genetics to resist that insecticide. When that happens the insect will the favorable gene reproduces and creates more insects that are resistant. Humans promoted this evolution by using the same insecticide on the insects.
How do insecticides force evolution?
Widespread use of insecticides can lead to the evolution of insecticide resistance. In any population of insects there will be genetic variation ie individual insects are not identical; just like humans there are all different. Some individual insects will be more resistant to an insecticide than others. When an insecticide is used the individuals which are resistant will have a better chance of surviving. They will then pass on their resistance genes to their offspring, which will in turn have a better chance of surviving. In this way the resistance genes will spread through the population. This is an example of natural selection in action. See www.evolution.berkeley.edu/
How do cockroaches become resistance to insecticde?
Just like most insects, cockroaches become resistant to insecticides because the resistant ones of the group are the only ones to survive. Thus, the trait which made them resistant is carried on through breeding with the other resistant ones. That's why farmers must constantly switch up the insecticides they use.
What has the author A L Winfield written?
A. L. Winfield has written: 'Insecticides and beneficial insects' -- subject(s): Injurious and beneficial Insects, Insecticides 'Bean seed flies'
How many insects and mites were resistant to insecticides in 1940?
There are no worldwide statistics on the total number of insects and mites that were resistant to insecticides in 1940. But it can be assumed that insecticide resistance was at its lowest in 1940 since that date launches the decade that eliminated many an arachnid and an insect through DDT and since the immunity is evolutionary, with resistance to DDT being detectable in house-flies by 1947. Insecticide resistance spurs laboratory experiments with and refinements in conventional insecticides and genetically modified crops since, as an example, Hessian flies (Mayetiola destructor) inspire successive breedings of eight major resistant genes into wheat because of the insect pest's corresponding protective adaptations and resulting immunity.
Why do insecticides only work well for a few years?
Insecticides only work well for a few years because the insects undergo natural selection. The insects that are better adapted to survive the insecticide will reproduce and pass down their genes to the next generation and the adapted generation of insects will be unaffected by the insecticides.
Uses of insecticides?
Insecticides are used heavily in agriculture in order to repel insects and keep crop harvests high. However, in current years insecticides have been linked to cancer and environmental issues.
Explain how a population of insects could become resistant to a pesticide?
Ironically, from being exposed to the pesticide for a long period of time. Given a long enough timeframe, a insect species will evolve a natural resistance to a chemical through natural selection.Insects quickly develop resistance to insecticides due to natural evolution. As their bodies are exposed to the chemicals, small changes are made until it no longer affects them over many generations.some insects will have an adaptation that helps them survive and that they pass onto their offspring.the insect population changes to include more and more resistant membersAnswer:This is evelution in action.If the insects are exposed to a pesticide that only kills some of them, the only future generations come from resistant parents. If the application if pesticide continues, it weeds out non resistant individuals enhancing the resistence of subsequent generations.
Why do foxes have insecticide?
Foxes generally don't have insecticide. If their bodies do contain insecticides, it is from consuming animals that have consumed insects affected by insecticides.
How insecticides help us?
insecticides help farmers to eliminate harmful insects. Most are poisonous but some are concentrated in the food chain.
What is a global problem for insecticide resistance?
The Insects have come to be unaffected by the [what were previously] insecticides.
What does insecticides?
An Insecticide is a material produced to kill insects so therefore does not eat as such.
