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)
Q: e) Complete the table below: Transport method for water Transport method for (passive/ active?) Root...
A: Epidermis diffusion active Cortex osmosis down a concentration gradient. Active Endoderm...
Q: Discuss the scale and consequences of population growthand resource consumption
A: Introduction The rise in the number of people in a population is known as population growth. There a...
Q: name of the cellular receptor that hemagglutinin binds to ?How does Influenza enter the cell once it...
A: Influenza Is a viral infection that targets the respiratory tract of humans (mainly the nose, throat...
Q: 1. Reagent use to stop mitosis in metaphase? a. Phytohemaglutinin b. Colcemid c. Both d. None 2. How...
A: 1) Ans- D) None Explanation Demecolcine is used as reagent for stop mitosis in metaphases. During c...
Q: painful throat relapse after a few days.Discuss the possible reason for the relapse. Antibiotics are...
A: After two days he feels better, he save the rest of penicillin for later days, result is causes the ...
Q: Nascent form of the MRNA A. undergoes splicing only after capping 3. is also called hnRNA C. is poly...
A: A,B,C ONLY RNA splicing is a process that removes the intervening, non-coding sequences of genes (in...
Q: Enumerate the similarities among the lophophorates phyla.
A: lophophorate phyla include: Bryozoans Brachiopods Phoronida Entoprocta
Q: Discuss how mutations in the 5’ splice site, 3’ splice site or branch point of an intron may disrupt...
A: RNA formed from transcription by DNA consists of both introns and exons. - this RNA is turned into...
Q: In the cells of patients with I-cell disease, their newly synthesized lysosomal proteins are not pro...
A: All organisms are made of numerous cells. Aptly cells are the building blocks of an organism. Cells...
Q: Karner blue caterpillars are: A protected by ants B fed by ants C attacked by a...
A: Mutualistic, commensalistic, or parasitic symbiosis is any sort of comprehensive and long ecological...
Q: Describe the process of protein synthesis and trafficking of a protein, a lysosomal hydrolase, desti...
A: The targetting of specific protein depends on their mode of synthesis. The proteins of lysosome, end...
Q: the image below, what is the value of n in the cell on the left? 1OCESS NONDIS.JUNCTION n+1 Homologs...
A: Meiosis is shown in the image. This is a type of cell division that is responsible for the formatio...
Q: 3. Ehylene glycol, the main ingredient in antifreeze, is an odorless, colorless, sweet tasting water...
A: In case of ethyl glycol poisoning, ethyl alcohol is and fomepizol is used for the treatment as an an...
Q: Only get 10% of energy transfers from one level to the next. Where does the energy go??
A: A graphical representation of the energy found within the trophic levels of an ecosystem is an energ...
Q: Would a macrophage deficiency affect a person's innate immune function? Why or why not? Would a macr...
A: Macrophages are immunological sentinels which live in tissues and are important part of the innate i...
Q: How does an aggregate of contributing SNPs affect same-sex sexual behavior?
A: Same-sex sexual behavior is a complex trait . It is governed by both genetic and non-genetic factors...
Q: a. Summarize the factors that are causing lower numbers of caribou in herds in Alaska b. what impact...
A: An ecosystem is a natural community of living beings that deals with the external environment and ot...
Q: Modification of histone proteins include the following EXCEPT A phosphorylation of serine residues B...
A: Histones are basic proteins found in chromosomes that bind to DNA and give chromosomes their shape a...
Q: nucleotides - adenine, guanine, cytosine, and thymine?
A: 1. DNA is made up of long chain polymer of polynucleotide. A nucleotide consist of nitrogenous base...
Q: Question: What are the major mechanisms maintaining reproductive isolation between populations?
A: Reproduction can serve two distinct purposes. The two distinct purposes of reproduction are producin...
Q: List and describe the basic structures forming the animal excretory and reproductive systems.
A: Introduction Excretory and reproductive systems each have important but different functions in anima...
Q: trophies levels and food pyramids
A: Trophic level is the position of an organism in the food chain and ranges from a value of primary ...
Q: Specify the inheritance patterns for each of the statement – it can be one of these following: incom...
A: A. Multiple allele system: the different tpe of allele (A, B, O) determine the blood type in tge pop...
Q: If you were to find 60-million-year-old fossils of a species of land plants on the east coast of the...
A: Fossils are the substances that are used to give us information about how animals and plants were us...
Q: 6. The following statements describe evolution EXCEPT: * A. Evolution is continuous B. Evolution ref...
A:
Q: Could a gene be involved in the growth of both stem cells and some kinds of cancer? Explain your ans...
A: In the body, stem cells work as its repair system. Stem cells have the ability to develop into diffe...
Q: A
A: Introduction Muscles are soft tissues that contract to produce a particular movement, fascicles are ...
Q: Evolution is the accumulation of genetic changes within _______________ over time. (a) individuals (...
A: The biological change of a species over time is referred to as evolution. Evolution helps organisms ...
Q: Process: Production of glutamic acid from sugarcane molasses by corynebacterium glutamicum. Please ...
A: There are about 22 amino acids. Some of the amino acids can be synthesized in our body, hence known ...
Q: Discuss the consequences of diabetes - For example cardiac arrest, loss of limp and other health con...
A: Diabetes or diabetes mellitus is a condition in which blood glucose levels are abnormally either due...
Q: You perform a plaque assay with your bacteria and serial dilutions of your bacteriophage,, and then ...
A: Serial dilution is a process of making a series of dilution in order to determine the concentration ...
Q: In your practice, you have a patient at increased risk for cardiovascular disease. The statins you p...
A: Statins work by competitively inhibiting the active site of HMG-CoA reductase, the first and most im...
Q: During bacterial RNA chain elongation, ____ proceeds ahead of the transcription bubble introducing _...
A: RNA chain elongation is called transcription. When transcription occurred in the transcription site ...
Q: READ THIS: Notice that natural selection does not refer to indiv Trequency of adaptive heritable tra...
A: Ecosystem balance, often known as "ecosystem homeostasis," is influenced by both factors that tend t...
Q: Choose two of the following groups of animals and write a paragraph for each (5-7 sentences) to expl...
A: Zoology is the field of biology which examines animals, particularly their structure, embryology, de...
Q: Hello, good day. I have a problem answering this question, and I need your help. Hoping for a respon...
A: What are the similarities between these Kato Thick and Kato Katz methods of diagnosing parasitic inf...
Q: Genotype and environment interact to produce the phenotype ofan animal. Explain comprehensively the ...
A: Genetic traits are regulated by genes.
Q: Why is O+ compatible with O+, AB+, A+, B+?
A: Introduction : Landsteiner studied the properties of blood cells and the proteins on the surface of ...
Q: 2. Name two shuttle systems that transport NADH from cytoplasm into a mitochondrion.
A: Question no.2: The shuttle system is malate-aspartate shuttle.
Q: Choose correct option and explain shortly. Question:- Which of the following is the best descripti...
A: Flow cytometry is a laser-based technology for detecting and analyzing chemical and physical propert...
Q: QUESTION 27 Indicate which statements are true about the palisade mesophyll. Located below the lower...
A: The photosynthesis is the process by which chlorophyll containing organisms produce organics food in...
Q: Describe how cells know whether sister kinetochores are properly attached to the mitotic spindle.
A: According to cell theory, living organisms are made up of cells, that cells are the basic functional...
Q: Which of the following is not used as an evidence of evolution? * A. DNA B. Fossils C. Homologous ...
A: Answer is D. Niches
Q: Summarize how signals are relayed between cells. Explain in great detail and depth and cover some in...
A: Cell signalling is the process where any physical/chemical singal is passed/transmitted through a ce...
Q: According to evolutionists, which is the best test to show the relatedness of two organisms?
A: Evolution is the change in the characteristics of a species over several generations and relies on t...
Q: Which of the following is not one of the principles for creating an enriched environment? Human and ...
A: Answer :- Option (A) is correct. - Human and non-human environment.
Q: Individuals with the hereditary disorder ataxia telangiectasia suffer from neurodegeneration, immuno...
A: Ataxia-telangiectasia is a genetic disorder caused by a point mutation in the ATM gene.
Q: Select the descriptions that are specific for a regulatory transcription factor (RTF) Select 4 corre...
A: Genes are the fundamental unit of heredity. They store genetic information in the form of DNA, which...
Q: Conduct research and summarize the causative agent and mode of transmission behind the multistate me...
A: The U.S. Food and Drug Administration (FDA) and Centers for Disease Control and Prevention (CDC) are...
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)
Step by step
Solved in 2 steps
- 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 using what you learned about natural selection (Modified from Hoefnagels,2016)One problem with this line of criticism is that it is difficult to distinguish good forms of manipulating nature from unacceptable ones. Some critics of GMOs argue that we ought to leave species as we find them, and that it is the cross-species transfers of genetic material involved in some GMOs that make them unacceptable. One problem with this objection is that similar transfers have occurred in nature—from basic plant genetics to the long-term patterns of evolution. Please explain what does it meanChoose an organism that is a product of artificial selection. Give a brief description of your organism and its desired traits. What wild ancestor did it come from? Was it produced with selective breeding or genetic engineering (i.e. genetically modified)? What are the benefits of artificial selection in this case? Are there potential negative consequences?
- A farmer uses an herbicide called triazine to control pigweed in his field. Initially, the triazine works well and almost all the pigweed dies; but after several years, the farmer sees more and more pigweed. Which of these is the best explanation for what happened? Group of answer choices: Natural selection favored triazine-resistant pigweed, which was more likely to survive and reproduce. Some pigweed plants adapted to become resistant to triazine and passed the trait to their progeny. Natural selection caused the pigweed to mutate, creating a new triazine-resistant species. The herbicide company lost its triazine formula and started selling lower-quality triazine. Triazine-sensitive pigweed is less efficient at photosynthesis., make a diagram illustrating the evolution of a domesticated crop (preferably one that is cultivated or grown in your area). You may use any medium (crayons, colored pencils, etc.) which is readily available to you. Your output will be evaluated based on content (Does the diagram show information that is valuable and relevant to the theme?), organization (Does the diagram present information in a clear and orderly manner?), presentation (Are the layout and design of the diagram attractive and neat?) and graphics (Do the illustrations creatively and adequately support the information that the diagram intends to relay? Are the illustrations big enough to be identified from at least 1 meter away?).Triazines are a group of chemicals used to kill weeds in the field, such as pigweed and kochia. However, in late 1970s and early 1980s, resistant plants were found that are resistant to triazine applications. Which of the following statements is correct? -The appearance of triazine resistance is the result of mutation. -The spread of triazine resistance in the field is the result of natural selection. -Even if farmers have not used triazines, there would still be individuals with triazine resistance in the field, albeit at a much lower frequency. -All the statements are correct.
- The spread of antibiotic resistance genes is an example of evolution. Explain how this is evolution using the framework of natural selection. Make sure you include what genes are evolving and what is the selective agent or selective pressure.Differentiate between natural selection and genetic grift. Give a specific example for each.It is believed that trichomes give an evolutionary advantage to plants when herbivory is high because the trichomes may be irritating to the animals that feed on these plants. In these situations, the selection pressure would favor plants with more trichomes. The experiment described above mimics this condition. What type of selection is represented here? A. Stabilizing B. Disruptive C. Directional selection
- A group of researchers at Cornell University tested these three strategies to see which would be most effective retarding the evolution of diamondback moths to Bt- broccoli plants. Cry1Ac and Cry1C were the two types of Bt toxins used. In the mosaic strategy, 40% of the field had Cry1 Ac plants and 40% had Cry1C plants. The remaining 20% of the field was plants without any toxin. In the sequential treatment, 80% of the field consisted Cry1Ac plants for 12 generations, with 20% with plants lacking toxins. Then at generation 13, 80% of the field was Cry1C plants, with 20% with plants without toxins. In the pyramiding strategy, 80% of the field had plants with both the CrylC and Cry1Ac toxins, and 20% of the field had plants without any toxins QUESTIONS Question 1. You may have noticed that in each of the three treatments, a portion (20%) of the field contained plants without any toxins. Leaving parts of the planted field pesticide-free (refuges) is common practice in biological control…The dog breed West Highland Terrier is a product of artificial selection. Give a brief description of the breed and its desired traits. What wild ancestor did it come from? Was it produced with selective breeding or genetic engineering (i.e. genetically modified)? What are the benefits of artificial selection in this case? Are there potential negative consequences?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