Mosquitoes can carry and transmit many diseases to humans. In the past, the insecticide DDT was heavily used to reduce mosquito populations in order to reduce instances of disease transmission. However, after some time, mosquito populations developed a resistance to DDT, which made the DDT less effective in reducing mosquito populations. Based on what you’ve learned about natural selection, in 3–5 sentences, describe how mosquitoes may have come to develop this resistance.

Mosquitoes can carry and transmit many diseases to humans. In the past, the insecticide DDT was heavily used to reduce mosquito populations in order to reduce instances of disease transmission. However, after some time, mosquito populations developed a resistance to DDT, which made the DDT less effective in reducing mosquito populations. Based on what you’ve learned about natural selection, in 3–5 sentences, describe how mosquitoes may have come to develop this resistance.

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter19: Evolutionary Change In Populations

Section: Chapter Questions

Problem 15TYU

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Mosquitoes can carry and transmit many diseases to humans. In the past, the insecticide DDT was heavily used to reduce mosquito populations in order to reduce instances of disease transmission. However, after some time, mosquito populations developed a resistance to DDT, which made the DDT less effective in reducing mosquito populations. Based on what you’ve learned about natural selection, describe how mosquitoes may have come to develop this resistance
Mosquitoes can carry and transmit many diseases to humansIn the past, the insecticide DDT was heavily used to reduce mosquito populations in order to reduce instances of disease transmission. However, after some time, mosquito populations developed a resistance to DDT, which made the DDT less effective in reducing mosquito populations . Based on what you've learned about natural selection, in 3-5 sentences, describe how mosquitoes may have come to develop this resistance.
Staphylococcus aureus (staph) is a type of bacteria found on people's skin. These bacteria, along with most other types of bacteria, are usually harmless. They can occasionally cause serious infections that can lead to sepsis or death. Methicillin-resistant Staphylococcus aureus (MRSA) is difficult to treat because of resistance to some antibiotics. Use your knowledge of natural selection to explain how selection for methicillin-resistance in Staphylococcus aureus (MRSA) occurs. Focus on explaining the specifics of how this happens by talking about the variation that has to be present, the characteristics of that variation, impacts on fitness and success of the next generation. Your answer will not require any additional research and will only be a short paragraph based on what you think must be going on here based on other examples of natural selection
Antibiotic resistance is on the rise due to greater use of antibiotics, including the use with livestock. Explain your understanding of the rise in use of antibiotics. How are antibiotics used in raising livestock? How does this pose a threat to humans? What can we learn about the process of natural selection and evolution from the antibiotic-resistant bacteria? How should this change the use of antibiotics? Your post/article should be a minimum of 500 words in length.
Can viruses adapt by natural selection? A. No, because there isn't a genetic basis for inheritance between parent and offspring virus particles. B. No, because there isn't a way to distinguish more fit from less fit virus particles C. Yes but only via human (domestic/artificial) selection D. No they evolve by mutations. E. Yes, virus particles that are most successful successful in reproducing quickly and infecting other host cells are the best adapted.
In the US, many farmers regularly use the herbicide glyphosate to keep their fields free from weeds. Now, however, they are reporting the presence and spread of “superweeds” which are resistant to the said herbicide. Give a brief explanation of this situation using what you learned about natural selection. (Modified from Hoefnagels, 2016)
Which evolutionary mechanisms (natural selection, mutation, genetic drift, or gene flow) would you need to understand to predict the success of genetically modified mosquitoes to: 1. Drive the mosquito population to extinction? 2. Replace the mosquito population with genetically modified mosquitoes that can not transmit malaria?
One of the lines of evidence that led Darwin to the theory of natural selection was his study of artificial selection. Plant breeders and pigeon breeders select offspring with specific traits in mind beforehand. a) However, since humans are an integral part of the natural world, do you think that artificial selection might be more appropriately termed “natural selection”? Why?
As an experiment, Dr. Charles Someone released bunnies on an island where there were no natural predators and plenty of food and good bunny habitat. Before he released them, he noticed that the population had an equal number of bunnies with great heat resistance and bunnies without good heat resistance. Since the island was very hot, he suspected that evolution would occur to make the heat resistant allele more abundant than the heat susceptible allele. He comes back after many years and observes the bunnies, only to find that the heat resistant bunnies are not the majority. In fact, the alleles for the susceptibility vastly outnumber the ones for resistance. What is going on? Choose the best answer. O a. Random chance, and not evolution. Evolution only happens with beneficial alleles O b. Random chance, and evolution. Evolution can happen with beneficial or deleterious alleles O c. Natural selection must be choosing the susceptible bunnies for a reason O d. None of these
Natural selection and artificial selection or selective breeding can both cause changes in animals and plants. The difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. Changes in genetic traits have occurred over generations through both natural selection and selective breeding although the occur through different means. What characterizes only artificial selection? Choose all that apply. A) chickens that lay larger eggs are favored B) selection increases the chances of surviving C) selection make a species stronger and fit for survival D) selection favors the desired characters in the new organisms
How might an evolutionary biologist explain why a species of salamander becomes blind after colonizing a cave? Group of answer choices Members of the ancestral population that colonized the cave differed in their ability to see. If maintaining the ability to see in the cave was a waste of energy, blind salamanders might actually have more offspring than those who could see. It is possible that in the cave there is a source of pollution that increases the mutation rate for a gene that makes salamanders blind. Over time, due to exposure to this chemical, the membersof the population lose their sight. There is no way to explain this in terms of natural selection. The members of this salamander species no longer needed to use their eyes. Over time, due to lack of use, they lost the ability to see.
Some antibiotics used to treat infections in humans are also used to treat chickens, but some groups oppose this practice. The overuse of antibiotics will most likely influence the natural selection of which type of organisms? a chickens that are resistant to infection b chickens that naturally make the antibiotics c microbes that are susceptible to the antibiotics d microbes that are resistant to the antibiotics