It's possible that the cockroaches are evolving a resistance to the poison in the baits. This is a process known as natural selection, similar to observed resistance in other insects such as fruit flies and mosquitoes. Over time, resistant individuals proliferate and the effectiveness of the bait decreases.
Explanation:The fact that hydramethylnon-corn syrup baits initially work for attracting cockroaches, but the effectiveness lessens over time suggests a possible development of resistance in the cockroach population, which is a biological phenomenon that could be understood within the context of evolution. When a population is exposed to an adverse condition like a poison, individuals with traits that enable them to survive and reproduce in spite of that condition can proliferate, while susceptible individuals are eliminated. Over time, the frequency of the resistant trait can increase in the population, a process known as natural selection.
The concept is similar to the observed resistance to DDT in fruit flies and mosquitos. These insects developed resistance to widely used chemicals and passed these resistant traits onto their offspring. As the resistant population expanded, the effectiveness of the chemicals reduced. A similar phenomenon can occur in the cockroach population when exposed to the hydramethylnon-corn syrup bait consistently. As time goes by, the cockroaches that have traits to avoid or resist the poison will survive and pass these traits on to their offspring, reducing the effectiveness of the bait.
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The correct answer is that the observed decrease in effectiveness of hydramethylnon-corn syrup baits over time could suggest that an aversion trait is evolving in the cockroach populations exposed to the bait.
The logic behind this answer is based on the principles of natural selection and evolution. When a population of cockroaches is exposed to a toxic bait, individuals that have a natural aversion or resistance to the bait are more likely to survive and reproduce. Over time, the genes responsible for this aversion or resistance become more prevalent in the population.
Initially, the bait is novel to the cockroach population, and most individuals do not have an aversion to it. The sweetness of the corn syrup attracts the cockroaches, and they consume the bait, which contains the toxicant hydramethylnon. As a result, many cockroaches are killed, and the bait appears to be effective.
However, with repeated exposure to the bait, the cockroach population undergoes selective pressure. Individuals that are less attracted to the bait or that have physiological mechanisms allowing them to detoxify or tolerate the hydramethylnon are more likely to survive and pass on these traits to their offspring. As these traits are heritable, over successive generations, the proportion of the population with an aversion or resistance to the bait increases.
This process can lead to a decrease in the effectiveness of the bait, as fewer cockroaches are attracted to it or are affected by its toxic properties. The development of such traits is an example of an evolutionary response to control measures, highlighting the adaptability of pest species like cockroaches and the challenges faced in pest management.
In summary, the decrease in the effectiveness of the bait suggests that the cockroach population is evolving, with an increasing prevalence of individuals that either avoid the bait or are resistant to its toxic effects. This is a classic example of how pest control strategies can inadvertently select for traits that make the pests more difficult to control over time.
Why is andrew carnegie famous?
a. he was a ruthless steel tycoon who donated millions to charitable organizations.
b. he was accused of creating a monopoly in the oil industry.
c. he was a founding member of the new york stock exchange.
d. he was a financier who owned large banks in several major american cities?
_____ is the dimension of a contract that is concerned with the degree to which the agreement is manifest to those not party to it.
Why should managers be concerned about how the decisions they make affect others?
Assuming a country's economy maintains an 8% rate of growth, young adults starting at age 20 would see the average standard of living in their country more than double by the time they had reached age __________.
The formula for exponential growth rate is:
A = Ao e^(k t)
where A is the final standard of living, Ao is the initial, k is the growth rate constant in decimal = 0.08, t is time elapsed
So we will find t at A/Ao = 2
A/Ao = e^(k t)
2 = e^( 0.08 t)
t = 8.66 ~ since more than therefore 9
So by the time they reached age 29
Young adults starting at age 20 in an economy with 8% growth rate will see a significant increase in average standard of living by age 30 and a substantial sixfold growth by age 45 due to compound growth.
Young adults starting at age 20 and experiencing an 8% growth rate in the economy will see the average standard of living in their country more than double by the time they reach age 30, and grow nearly sixfold by the time they reach age 45. This is due to the impact of compound growth over time.
The first costs assigned to ending inventory are the costs of the beginning inventory under the
A business decision maker’s decision is more likely to raise ethical concerns in a society where
Computronics, inc. has a current ratio of 1.5. this implies that if the firm liquidates its current assets in order to pay off its current liabilities, it can sell the current assets for as little as:
When it is said that a perfectly competitive firm is a price taker, this means?
Finding ordered pairs that satisfy all of the inequalities in the system is called
Buildtron inc., a construction firm, is in need of a construction superintendent, whose primary responsibilities involve organizing, supervising, and inspecting the work of several subcontractors. buildtron administers a construction-error recognition test, where an applicant has to enter a shed that has 25 construction errors and has to record as many of these errors as can be detected. what type of validity is being established in this case?
What are the benefits of a long-term bond over a short-term bond?
Its c---------------------------------------
has grater risks but a greater return
As ted does more even work in excel, he has begun to develop a collection of publishers whom he trusts to deliver macros that are problem-free. what should his option be in the trust center?
Ted can add his trusted publishers in the Excel Trust Center under the Trusted Publishers tab. This allows Excel to automatically enable macros from these publishers, maintaining both efficiency and security.
Explanation:For Ted to safely use macros from his trusted publishers, he should configure his settings in the Excel Trust Center. The Trust Center is a component of Microsoft Office programs where you can set up security and privacy options for the program.
To add a trusted publisher, he would go to File -> Options -> Trust Center -> Trust Center Settings -> Trusted Publishers. Here, he can view, add, or remove trusted publishers. He can add his trusted publishers to the list, and this would allow Excel to automatically enable macros from these publishers without warning him. It's an effective way to streamline his workflow without sacrificing security.
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How does a building become rent stabilized from rent controlled?
The ________ is a set of phases that temporary groups go through that involves transitions between inertia and activity.
You would check ________ for images that are not copyrighted.
___________ refers to educating technical and operational employees in how to better do their current job.
The largest amount of money that the federal government lays out is for the transfer program, _____. and its largest expenditure is for _____.
(tco 7) which access control method is characterized by the information owner being responsible for assigning privileges to appropriate users?
A _____ is a group of employees responsible for an entire work process or segment that delivers a product to an internal or external customer.
What was an important influence of railroads on modern business practices ? a- strict government regulations for railroads brought strict regulation to oil and steel b- railroads formed corporations that raised money through issuing stocks and bonds c- the use of nonstandard materials set an example for other businesses d- railroads made it possible for other businesses to locate resources?
B is the answer to the question
Compared to producers, consumers will lose the lesser amount of surplus from a tax if
Which specific software tool would you implement to collect and analyze your company's "big data"?
Scorpion gulch & western railway is preparing to build a new line through rolling mountains. they have hired you to do some calculations for tunnels and bridges needed on the line. you set up a cartesian coordinate system with
The question is about mathematical calculations needed for engineering tasks such as designing tunnels and bridges for a new railway line through mountainous terrain, which involves geometry and calculus.
Explanation:The subject of the question is Mathematics, specifically real-world applications of geometry and calculus related to construction and engineering. Although the question is presented in a narrative form, the reference to 'calculations for tunnels and bridges' along a new railway line suggests problems that would likely involve geometric measurements and possibly optimization calculations using calculus for determining the most efficient construction methods. The student is likely to deal with tasks like measuring distances, calculating gradients, volumes, areas of cross-sections of tunnels, and optimizing material use for bridges within a mountainous terrain.
A technology supply store advertises new tvs for $100 a month for six months instead of $600 in order to
The answer is to make a larger price tag look more manageable. With a price tag of six hundred dollars, it is a large price tag for a television, which is why advertising a television for one hundred dollars for six months is more eye-catching, since it’s a lot less expensive and it is considered to be manageable.
John is an alcoholic. he recently signed a contract to buy a very expensive home. prior to signing the contract, he had six or eight cocktails. what is likely to happen with the contract?
Contracts require some conditions to be created according to the law of contracts. One of the conditions is that both parties must agree to the terms of the contract, usually referred as meeting of the minds. Since John was impaired (drunk) during the meeting of the minds, he was incapable to understand the terms he was agreeing to.
In order to maximize profits in the short run a firm should produce where
Answer:AVT is minimized
Explanation:
Members at a yoga school pay $10 per class plus a one time $100 membership fee.non members pay $15 per class.how many classes would a member have to take to save money compared to taking classes as a non member?
Individuals need to take 21 classes to save money compared to taking training as a non-member.
What's the cause of the club?An awful lot of the purpose of a membership application is nearly usually to grow the monetary, political, and/or operational stability of the organization.
What is the cost of the club?Perceived member price is what your members feel they receive from you, be that their access to services or blessings in their membership and capability to take part. this will be quite distinct from the actual member value as a number of your participants can be unaware of the benefits and offerings you may offer to them.
What's the advantage of affiliation membership?Reductions in training, activities, and extra -- club associations are appealing because they provide perks to their contributors. Perks often encompass discounts on expert schooling, publications, and event tickets.
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Currently in the united states, _____ of adults are overweight. one-half three-quarters one-third two-thirds
Currently in the United States, two-thirds of adults are overweight.
Certainly!In the United States, "two-thirds" refers to a fraction of the adult population. Specifically, it means that out of every three adults, approximately two are considered overweight. This statistic highlights a significant portion of the population facing issues related to weight management, which can have various implications for public health, healthcare systems, and individual well-being.
if a certain country considered handshakes in business transactions to be taboo and preferred to use nodding, this would be an example of differences in ____ forces.
Supermarkets may use __________ on information collected at checkout to determine that beer and diapers are often purchased together, and they may act on this information to place those items near one another in stores.
Answer: Supermarkets or other retail stores may use information technology or data mining on checkout items to determine whether certain items are often purchased together. This will help the stores decide where to place the items in relation to each other. Many times beer will be purchased with diapers and the beer will be strategically placed near the children's diaper section but on the other side of the aisle. The stores may also just have an end cap of diapers placed on the end or middle of the aisle so it can be seen by the consumers.