Five RFLPs designated 1
A
1 A and 1
B
,
2
A
1 B,2 A and 2
B
,
3
A
2 B,3 A and 3
B
,
4
A
3 B,4 A and 4
B
4 B, and 5
A
5 A and 5
B
5 B, are known to map along chromosome 4 of corn. A plant breeder has obtained a strain of corn that carries a pesticide-resistance gene that (from previous experiments) is known to map somewhere along chromosome 4. The plant breeder crosses this pesticide-resistance strain that is homozygous for RFLPs 1A, 2B, 3A, 4B, and 5
A
5 A to a pesticide-sensitive strain that is homozygous for 1
B
,
2
A
,
3
B
,
4
A
1 B,2 A,3 B,4 A, and 5
B
5 B. The �
1
F 1
generation plants were allowed to self-hybridize to produce the following F
2
F 2
plants
Based on these results, which RFLP does the pesticide-resistance gene map closest to?
Answers
In the given scenario, the two corn strains are homozygous for different RFLPs. Therefore, after crossing, the resultant F1 generation of plants would have one allele for each RFLP. It means, the F1 plants would be heterozygous for all six RFLPs.
However, the pesticide-resistance gene would always be homozygous as the breeder has crossed a homozygous resistant strain with a homozygous sensitive strain. From the given data, the homozygous pesticide-resistant strain is homozygous for RFLPs 1A, 2B, 3A, 4B, and 5A5A. Thus, the pesticide-resistance gene is located on the long arm of chromosome 4 between RFLP markers 5A5A and 3A.To conclude, the pesticide-resistance gene is mapped closest to the RFLP marker 3A on chromosome 4 of the corn plant. Therefore, option C is correct.Here is the gene map that shows the location of the pesticide-resistance gene in the F2 generation.
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Related Questions
The Twenty-Nine Palms Marine Base in the Mojave desert is a habitat for both desert tortoises and ravens. The ravens (R). prey on the baby tortoises (T). Based on the following assumptions, write a differential equation model for these populations. - Since it takes tortoises about 20 years to reach sexual maturity and they can live up to 80 years, the baby tortoise birth rate is proportional to the baby tortoise population 30 years earlier, with a proportionality constant of 1.8. - The rate at which an individual raven preys on tortoises is a saturating function of the baby tortoise population, with a maximum of 0.5. - Baby tortoises die from causes unrelated to raven predation at a constant per-capita rate of 0.02 and mature into adults at a per-capita rate of 0.06. - Since ravens have other food sources, their per-capita birth rate is a constant, 5. - The per-capita death rate of ravens is proportional to the raven population with a proportionality constant of 0.02. - The Marines are using lasers to drive ravens off the base. The rate at which they do so is a sigmoid function of raven abundance that increases up to 0.8 when the raven population is high.
Answers
The given differential equation model describes the population dynamics of baby desert tortoises (T) and ravens (R) considering growth, mortality, predation, and the effect of lasers.
Let T be the population of baby desert tortoises, and R be the population of ravens. Here's a differential equation model for these populations:
dT/dt = 0.06T - 0.02T - R(0.5T/(T+K))
dR/dt = 5 - 0.02R - (R/(1+exp(-0.1(R-100))))*0.8
The first equation describes the growth of the baby tortoise population. The first term on the right represents the increase in the baby tortoise population due to maturation into adults, and the second term represents the decrease in the baby tortoise population due to unrelated causes of death. The third term represents the decrease in the baby tortoise population due to predation by ravens. The rate of predation is a saturating function of the baby tortoise population, with a maximum of 0.5 when the baby tortoise population is much larger than the raven population. The constant K represents the carrying capacity of the desert tortoise population in the absence of predation.
The second equation describes the growth of the raven population. The first term on the right represents the per-capita birth rate of ravens. The second term represents the per-capita death rate of ravens, which is proportional to the raven population. The third term represents the rate at which the Marines drive ravens off the base using lasers. This rate is a sigmoid function of the raven population, with a maximum of 0.8 when the raven population is high. The constant 0.1 controls the steepness of the sigmoid function, and 100 is the inflection point of the sigmoid function.
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What do you think “exo” means in the word exoskeleton? (As a hint, humans have an “endoskeleton.
Answers
Answer:
Outer skeleton
Explanation:
"Exo" means outer and "Endo" means Inner which is why we have an endoskeleton so we have an Inner skeleton and to answer your quest Exo means outer so it means outer skeleton
Help me please! I will report any links!
Answer all of the questions using the diagram provided.
1. Which organisms are producers?
2. Which organisms are herbivores?
3. Which organisms is an omnivore?
4. Which organisms is the top level consumer?
Answers
Answer:producer- seaweed and phytoplankton
Explanation:
The lemurs of Madagascar are _____. View Available Hint(s)for Part A prosimians anthropoids hominins Old World monkeys
Answers
Answer:
prosimians
Explanation:
I NEED HELP ASAP (IF IT IS CORRECT THEN ILL MARK BRAINLIEST) which do guard cells control? A. the rate of food production B. movement through phloem C. movement through xylem D.the size of the stomata
Answers
Answer:
D. the size of the stomata
Explanation:
Guard cells regulate the opening of stomata by integrating different signals, both endogenous and exogenous (environmental). The ability of plants to control stomatal opening allows them to respond quickly to changes in the environment.
Gene on a chromosome lies close to another gene controlling a different trait. This indicates that jeans are blank the first gene contributes to the expression of the second gene. This indicates blank
Answers
Answer: genes are linked
Explanation: Gene on a chromosome lies close to another gene controlling a different trait. This indicates that genes are linked, meaning they are physically close to each other on the same chromosome. The proximity of these genes suggests that they are more likely to be inherited together as a unit, rather than independently assorting during the process of genetic recombination.
What type of TV needs to use an electron gun?
1. LED
2. LCD
3. 3D
4. Cathode Ray tube
Answers
Answer:
A black-and-white TV has a single electron gun, a cathode Ray tube
Answer:
4. Cathode Ray tube
Explanation:
Select the living organisms that will decrease as a result of the loss of coral in the food web.
Answers
Answer:
Butterfly fish, Triggerfish, parrotfish, and sharks
Explanation: Because the first three fish listed feed on coral, their populations will decrease if coral is eliminated because that means there will be less food to go around for the populations to consume. Many will die out. If those fish die, there will be less of them for the sharks to eat, causing the shark population to decrease as well.
Please HELP ASAP!!! I NEED HELP ON THESE TWO QUESTIONS
Answers
Answer:
Number 4, and number 5 are C.
Explanation:
The amount of water affects the mass and height as shown on the table. The graph clearly shows that plant 1 goes up at a constant rate, while plant 2 grows a little at first, but then stops.
consider the differences in solids, liquids and gasses, and their surface area. which state of matter do you think would usually have the greatest rate of reaction, and why?
Answers
Answer:
el que tendrá mayor velocidad de reacción son los líquidos
Explanation:
A resident has control of her bladder. the person could not get to the bathroom in time because her call light was not answered promptly. the person was incontinent of urine. this is:
Answers
The person experienced urinary incontinence due to a delayed response to their call light, preventing them from reaching the bathroom in time.
Urinary incontinence refers to the involuntary loss of urine, resulting in the inability to control bladder function. In this scenario, the person had control of their bladder but was unable to reach the bathroom in time due to a delayed response to their call light.
Prompt response to a patient's call light is crucial in providing timely assistance, especially for individuals with mobility issues or urgent needs such as using the bathroom. When the call light is not answered promptly, the person may experience an episode of urinary incontinence.
The delay in responding to the call light can lead to the person being unable to reach the bathroom in a timely manner, resulting in the involuntary loss of urine. Factors such as limited mobility, urgency of the situation, or physical limitations may further contribute to the inability to control bladder function.
To prevent such incidents, it is essential for healthcare providers to prioritize prompt response to patient requests, ensure accessibility to call lights, and implement strategies to address individual needs and minimize instances of urinary incontinence.
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PLEASE GELP ME I NEED ANSWERS
Answers
B. Deposition
Deposition is the dropping of sediment by wind, water, ice, or gravity.
Shannon is making a Venn diagram to organize the characteristics of cell walls and cell membranes. Which pair of characteristics both belong in the two areas of the Venn diagram that do not intersect?
helps with communication; contains mostly cellulose
contains mostly cellulose; forms the outer layer of animal cells
is found in plant cells; is found in animal cells
is semipermeable; found in animal cells
Answers
Answer:
uyy
Explanation:
nb gh
Answer:
contains mostly cellulose; forms the outer layer of animal cells
Explanation:
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Which plant group is one of the oldest on Earth?
daisies
ferns
sequoia trees
orange trees
Answers
Answer:ferns
Explanation:
Hope this helps
Answer:
sequoia trees.
Explanation:
they are also known as "red woods" they are the giant red barked trees in different parts of california, and they are hundreds and thousands of years old.
the cellular machine comprised by rna polymerase, dna template and a nascent mrna is referred to as?
Answers
RNA polymerases are the enzymes involved in transcription. RRNA makes up the majority of a RNA in cells; mRNA makes up about 3-5% of a cell's total RNA.
To create a fresh, complementary RNA molecule, RNA polymerase employs a single Stranded dna (the template to make) as a template. Termination is the procedure that puts a stop to transcribing. The RNA sequences that indicate that the translation is finished rely on termination. Where does the transcription of a gene to mRNA by RNA polymerase start? It begins following a certain nucleotide pattern known as a promoter. What role does RNA polymerase play? The expanding strand of RNA receives nucleotides as the double helix is unwound. RRNA genes are transcribed by RNA polymerase I, mRNA, miRNA, snRNA, or snoRNA genes are transcribed by RNA polymerase II, while tRNA & 5S rRNA genes are transcribed by RNA polymerase III. Answer and justification Comparisons between DNA and RNA A Template dna strand is needed for polymerases.
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continuous desert tortoise populations across the sonoran desert have adapted to different climates, where the climate near the northern edge of the sonoran desert is extremely hot and dry, while the climate near the southern edge has more scrub, shade, and access to water. evidence suggests that there are now two species of desert tortoises. true or false: this is an example of allopatric speciation.
Answers
The given statement "Continuous desert tortoise populations across the sonoran desert have adapted to different climates, where the climate near the northern edge of the sonoran desert is extremely hot and dry, while the climate near the southern edge has more scrub, shade, and access to water. evidence suggests that there are now two species of desert tortoises. This is an example of allopatric speciation." is true because Allopatric speciation is a type of speciation in which species evolve from a common ancestor while they are geographically isolated from one another.
They do not interbreed, and over time, their genetic makeup changes, leading to the formation of new species.
The formation of new species through allopatric speciation requires geographic isolation, which prevents genetic exchange between populations of the same species. The populations evolve separately, developing unique genetic characteristics that eventually result in two separate species.
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why do some animals migrate While others are able to live in the same place year around
Answers
There is a small --- distance because the membrane is thin (lungs)
Answers
There is a small diffusion distance because the membrane is thin (lungs).
The respiratory membrane, located in the lungs, is a crucial structure responsible for the exchange of oxygen and carbon dioxide between the air in the alveoli and the blood in the capillaries.
It consists of three distinct layers: the alveolar epithelium, the capillary basement membrane, and the capillary endothelium. These layers create a thin and delicate barrier that allows for efficient gas exchange.
The diffusion distance plays a vital role in this process. The thinner the membrane, the shorter the diffusion distance, resulting in a more rapid and efficient exchange of gases. In the case of the lungs, the respiratory membrane is indeed thin, allowing for a small diffusion distance.
This characteristic enables oxygen to quickly diffuse from the alveoli into the capillaries, while carbon dioxide diffuses in the opposite direction, from the capillaries to the alveoli.
As a result, the sentence that fills in the blank and fits the given terms is: "There is a small diffusion distance because the membrane is thin (lungs)."
This statement accurately describes the unique characteristic of the respiratory membrane in the lungs, which facilitates efficient gas exchange.
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100 Points y'all!!!!!!!!!!! Will mark brainliest too!
Lionfish are native to the tropical waters of the Indo-Pacific. What conclusions can be made about the impact of ocean warming on the range of lionfish and, therefore, on biodiversity?
Rising ocean temperatures have expanded the range of the lionfish; with little competition, it consumes smaller fish, reducing biodiversity.
Global warming has forced the lionfish to warmer waters where it is able to mate with native fish, increasing biodiversity.
Climate change has restricted the habitat of lionfish. It has become an endangered species, reducing biodiversity.
Lionfish thrive in high carbon dioxide environments; they eat all of the native species in the area, reducing biodiversity.
Answers
Answer:
Rising ocean temperatures have expanded the range of the lionfish; with little competition, it consumes smaller fish, reducing biodiversity.
Explanation:
As ocean temperatures have increased, the range of the lionfish has increased. As a top predator, it has little competition for eating smaller fish, causing massive destruction by eating endangered fish, reducing biodiversity.
A population of beetles is currently 60 beetles at n=0. The beetle population has an intrinsic growth rate of 150% each generation. The environment can sustain a maximum population of 130 beetles. Find the population of the next three generations, 'y_1' ' 'y_2' and 'y_3' of beetles
Answers
The population of beetles in the next three generations, considering the carrying capacity, is y1 = 130 beetles, y2 = 130 beetles, and y3 = 130 beetles.
The population of beetles can be calculated using the formula: y = y0 * (1 + r)^n, where y is the population at a given generation, y0 is the initial population, r is the intrinsic growth rate (expressed as a decimal), and n is the number of generations.
Given that the initial population (y0) is 60 beetles and the intrinsic growth rate (r) is 150% (or 1.5), we can calculate the population for the next three generations.
For the first generation (y1), we substitute y0 = 60, r = 1.5, and n = 1 into the formula: y1 = 60 * (1 + 1.5)^1 = 60 * 2.5 = 150 beetles.
For the second generation (y2), we substitute y0 = 60, r = 1.5, and n = 2 into the formula: y2 = 60 * (1 + 1.5)^2 = 60 * 6.25 = 375 beetles.
For the third generation (y3), we substitute y0 = 60, r = 1.5, and n = 3 into the formula: y3 = 60 * (1 + 1.5)^3 = 60 * 15.625 = 937.5 beetles.
However, since the environment can only sustain a maximum population of 130 beetles, we need to consider the carrying capacity.
To find the population at each generation while considering the carrying capacity, we compare the calculated population with the carrying capacity and use the smaller value as the population.
For y1, the population is 150 beetles, which exceeds the carrying capacity of 130 beetles. Therefore, y1 = 130 beetles.
For y2, the calculated population is 375 beetles, which is also above the carrying capacity. Thus, y2 = 130 beetles.
For y3, the calculated population is 937.5 beetles, which is still above the carrying capacity. Therefore, y3 = 130 beetles.
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measuring biochemical byproducts excreted in urine that can serve as indicators of kidney cancer. assessing dna methylation patterns in a cancer cell chegg
Answers
These patterns can help identify specific genes or regions of the genome that are aberrantly methylated, potentially serving as diagnostic or prognostic markers for kidney cancer.
Measuring biochemical byproducts excreted in urine can be a non-invasive approach to identify potential indicators of kidney cancer. By analyzing urine samples, specific metabolites or biomarkers can be detected, indicating the presence or progression of kidney cancer. These biomarkers may include various metabolites, proteins, or genetic material shed by cancer cells into the urine. Additionally, assessing DNA methylation patterns in cancer cells can provide valuable information about the epigenetic alterations associated with kidney cancer. diagnostic or prognostic markers for kidney cancer.
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Why are ectomycorrhizal fungi, or EMF, aptly named? a. Their hyphae form tree-like branching structures inside plant cell walls. b. They are mutualistic. c. Their hyphae form dense mats that envelop roots but do not penetrate the cell walls. d. They transfer nitrogen from outside their plant hosts to the interior.
Answers
Their hyphae form dense mats that envelop roots but do not penetrate the cell walls are known as Ectomycorrhizal fungi or EMF aptly.
What are Ectomycorrhizal fungi?Ectomycorrhizal fungi (EMF) form mutualistic associations with the roots of many tree species. Unlike arbuscular mycorrhizal fungi (AMF), which penetrate the plant root cells, EMF form a dense sheath around the root tips and grow between the cells of the root cortex, forming a mantle or "enveloping" the roots. This mantle is composed of a network of hyphae that do not penetrate the root cell walls, hence the name "ecto-" (meaning outside) mycorrhizal fungi. The hyphae of EMF also form a dense mat or web-like structure in the soil surrounding the root system, which aids in nutrient and water absorption by the plant.
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why is ampicillin added to the agar medium upon which transformed bacterial cells are grown?
Answers
Ampicillin is to the broth to ensure that the plasmid DNA would be maintained by the transformed cells.
Meningitis (infection of the membranes that surround the brain and spinal cord) and infections of the throat, sinuses, lungs, reproductive organs, urinary tract, and gastrointestinal tract are all treated with ampicillin.Staphylococcus, Streptococcus, Corynebacterium, Clostridium, Escherichia, Klebsiella, Shigella, Salmonella, Proteus, and Pasteurella are considered to be generally susceptible to ampicillin and amoxicillin, though many of these bacteria have acquired resistance.To know more about Ampicillin here
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CLC
What does a machine change to make work easier? Select three options.
the amount of work done
the amount of force applied
the time needed to do the work
O O O
the direction of a force
the distance over which a force is applied
Answers
*the amount of force applied
*the direction of a force
*the distance over which a force is applied
The nervous system is made up of blank______ of communicating cells.
Answers
Answer:
neurons convey information
you are a big fruit eater and as a result often have slightly high potassium levels in your blood plasma/interstitial fluid. as a result of this, which of the following are true? group of answer choices you would see increased k secretion and decreased aldosterone secretion you would see decreased k secretion and decreased aldosterone secretion you would see increased k secretion and increased aldosterone secretion you would see decreased k secretion and increased aldosterone secretion
Answers
The True option is : You would see increased k secretion and increased aldosterone secretion . Aldosterone, like perspiration and saliva, lowers Na+ and increases K+ secretion in the human colon.
Potassium is the most abundant cation in intracellular fluid, and appropriate potassium distribution across the cell membrane is crucial for good cell function. Long-term potassium homeostasis is maintained through changes in renal potassium excretion in response to changes in intake.
Understanding the mechanisms and regulatory forces that regulate the internal distribution and renal clearance of potassium under normal conditions can give a foundation for treating potassium problems that are regularly seen in clinical practice.
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what process controls if your plant is flowering or not what chemical
Answers
Answer: PHOTOTROISM
Explanation:
Answer:
Phototropism, plant growth towards or away from light, and photoperiodism, regulation of flowering and other developmental transitions by day/night length.
Explanation:
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If the genotype for hair color is B for brown hair and b for blonde hair, what are some examples of alleles that a brown haired person could have?
Answers
Bb ——Always take the dominant allele over recessive
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eutrophication is a disruption of the nitrogen cycle that results in runaway algal growth in ponds and lakes, often killing the fish and most other organisms living in the body of water. application of what substances by farmers is a primary cause of eutrophication?
Answers
Eutrophication is primarily caused by the application of nitrogen and phosphorus compounds, which are commonly found in fertilizers used by farmers.
These compounds can run off into nearby bodies of water, promoting the growth of algae and other aquatic plants. This can cause a disruption in the ecosystem, leading to a decline in water quality and the death of fish and other organisms. Eutrophication is the process by which a body of water becomes enriched in dissolved nutrients (such as phosphates and nitrates) that promote excessive growth of algae and other aquatic plants. This can lead to a decline in water quality and can have a negative impact on the ecosystem. Human activities such as agriculture, sewage discharge, and air pollution can contribute to eutrophication.
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Damaged cells of an organism are usually ------ by mitosis.
REBUILT
REPLACED
RENEWED
REPAIRED
Answers
Answer:
Replaced
Explanation:
Answer:
replaced
Explanation: