A current scientific theory would be revised based on the new findings if new technologies gave us information that challenged what scientists currently understand about natural selection.
A scientific theory results from research made by different scientists. These researches have a solid stance for proving a scientific theory. However, scientific theories are subject to being revised over time and can be changed accordingly if new research provides proper evidence for its modifications.
If through modern technologies, new information is proved then amendments or modifications are made to the previous theory rather than forming a completely new theory and discarding the previous one altogether.
After new information has been proved about natural selection, certain revision steps will occur and based on these revisions, the necessary modifications to the previous theory will be made.
Although a part of your question is missing, you might be referring to this question:
What would most likely occur over time if new technologies gave us information that challenged what scientists currently understand about natural selection?
A) A new scientific law would be established and proven by the findings.
B) A new scientific theory would be established and proven by the findings.
C) A current scientific law would be revised based on the new findings.
D) A current scientific theory would be revised based on the new findings.
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4. Fruit fly gametes each have four chromosomes
24, or 16, possible chromosome
How many chromosome
combinations could results from fertilization
between a fruit fly egg and a sperm cell?
representing
combinations.
combinations
There are 256 possible chromosome combinations in total because every sperm and egg has 16 possible chromosome pairings.
Chromosome: what is it?Chromosomes have formations which resemble threads and house the DNA molecule in each cell's nucleus. Each chromosome is constructed from DNA that has been tightly wound around proteins known as histones numerous times to support its structure.
What use does a chromosome serve?DNA may be precisely duplicated during these cellular division thanks to chromosomes. So, once more. Our cells' nuclei include chromosomes, which enable precise DNA duplication during cell division. This guarantees that our internal processes go smoothly and effectively.
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2. Which rely on other organisms for their energy and food supply?
A. primary producers
B. biomass
C. autotrophs
D. consumers
The organisms that rely on others for their energy and food supply are consumers.
Producer/ Autotroph: A living creature that produces its own food from sunlight, air, and soil is known as a producer. Green plants create food in their leaves through the process of photosynthesis. They are the primary producers in a food chain, also known as autotrophs. Biomass: The energy in living organisms is called biomass. Autotrophs transform solar energy into biomass. Each trophic level causes the biomass to decrease. Lower trophic levels always have more biomass than higher ones do.Consumer: A living organism that consumes is one that cannot produce its own food. Food consumption provides energy for consumers. Every animal is a consumer.Hence, the correct answer is D. consumers.
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_______________________________ asserts that our genes set the boundaries within which we can operate, and our environment interacts with the genes to determine where in that range we will fall.
Range of reaction asserts that our genes set the boundaries within which we can operate, and our environment interacts with the genes to determine where in that range we will fall.
What is the relationship between genes and the environment?Subtle genetic variations might lead one individual to react differently to the same environmental exposure as another. As a consequence, while some people may get an illness as a result of being exposed to something in the environment, others may not.
The notion of range of reaction states that genes impose certain boundaries on potential, and the environment determines how much of that potential is realised. The notion of genetic environmental correlation is another viewpoint on the relationship between genes and the environment.
Genes, through their impacts on morphology and physiology, form a framework within which the environment functions to define an individual animal's behaviour.
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How do zoned reserves provide economic incentives for long-term conservation of protected areas?
Zoned reserves provide economic incentives for long-term conservation of protected areas as zoned reserves may offer a consistent supply of water, hydroelectric power, educational possibilities, and tourism revenue.
A zoned reserve consists of sections of land that have seen little human effect and are encircled by buffer zones, which have experienced little human impact. The little Central American country of Costa Rica has emerged as a global pioneer in the creation of designated reserves. Zoned reserves may offer a consistent supply of water, hydroelectric power, educational possibilities, and tourism revenue.
Protected areas are used to conserve biodiversity and frequently offer habitat and protection from exploitation for endangered and threatened species. In the most intensively managed landscapes and seascapes, ecological processes cannot survive. Protection helps maintain these processes.
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Biologists have found evidence that eukaryotic cells evolved from prokaryotic organisms by a process of intracellular ______.
Biologists have found evidence that eukaryotic cells evolved from prokaryotic organisms by a process of intracellular symbiosis.
In the field of science, symbiosis can be described as a living together relationship between two species of organisms.
The theory of endosymbiosis suggests how the first eukaryotic cells developed from multiple prokaryotic cells.
Biologists suggest that structures, such as the mitochondria, and chloroplast, existed as prokaryotic cells in the beginning. An intercellular symbiosis relationship such prokaryotic cells was formed afterward which led to the formation of the eukaryotic cell.
Particular pieces of evidence that support the endosymbiotic theory are the existence of own DNA in chloroplast and mitochondria organelles. Also, this particular DNA is circular in the structure like prokaryotes have.
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resource5 may 2021 open access a single-cell rna expression atlas of normal, preneoplastic and tumorigenic states in the human breast
The above sentence is part of the study on global changes in breast heterogeneity across different states along with that they studied the single-cell transcriptomes of more than 340,000 cells including normal breast, preneoplastic BRCA1+/– tissue which is the major breast cancer subtype, and pairs of tumors and involved lymph nodes.
In the study , There were notable changes in the stroma of post-menopausal women which were disclosed by Elucidation of the normal breast microenvironment. There was comparable diversity in a discrete subset of cycling cells and among cancer cells, which was revealed by Single-cell profiling of 34 treatment-naive primary tumors, consisting of triple-negative breast cancers, estrogen receptor, HER2+ .in the immune microenvironment, there were global changes which were highlighted by The transcriptomes of preneoplastic tissue versus tumors. Proliferative CD8+ T cells characterizedHER2+ cancers and triple-negative but were not able to ER+ tumors within the tumor immune landscape, while the subtypes were comprised of cycling tumor-associated macrophages. The analysis of the studies which included the copied number of paired lymph nodes and ER+ tumors showed that seeding by genetically mass migration of primary tumor cells or distinct clones into axillary lymph nodes. Such integrated samples supplied the high-resolution map of cell diversity in the cancerous and normal human breast.
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quantification of gait parameters in freely walking wild type and sensory deprived drosophila melanogaster
Drosophila melanogaster use a combination of an optical touch sensor and high-speed video imaging to track their body as they walk, and also to record where and when they place each of their six feet on the surface.
In vertebrates and multi-legged invertebrates like Drosophila melanogaster, coordinated walking requires a sophisticated brain network connected to sensory feedback. Systems that can genetically modify brain activity, like Drosophila, will be helpful in comprehending this network. The fly is tiny, making it difficult to study walking in this system. We created an optical technique combined with high-speed imagery to get over this barrier and enable high temporal and spatial resolution monitoring and quantification of gait metrics in freely moving flies. We offer a thorough description of numerous locomotor characteristics for wild type fruit flies using this method, including gait, tarsal posture, intersegmental and left-right coordination.Learn more about the Drosophila melanogaster with the help of the given link:
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In the frog embryo, convergent extension elongates the notochord. Explain how the words convergent and extension apply to this process.
Convergence and extension coexist in the frog embryo. In the frog's embryo, united expansion prolongs the notochord.
The notochord's cells converge as a result of moving inward, or toward the center of the embryo. The notochord then extends or elongates due to the cells' subsequent reorganization.
Organogenesis is the process by which the embryo's germ layers create primary organs. In some animals, the germ layer cells have specific functions, and as a result, their future is predestined. However, it is not always the case with all creatures.
The cells of the frog embryo display convergent extension, a type of morphogenic movement or rearrangement. The cells reorient themselves toward the midline and converge due to this type of morphogenic migration.
The notochord extends due to the cells' subsequent self-reorganization by cell lengthening and narrowing.
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using advanced bioinformatics tools to identify novel therapeutic candidates for age-related macular degeneration.
We can use advanced bioinformatics tools to treat Age-related macular degeneration (AMD) is the eye disease that can blur your central vision. It happens only when the aging causes damage to the macula — all the part of the eye that is controls sharp, to straight-ahead vision. The macula is also the part of the retina (the light-sensitive tissue at the back of the eye).
An Age-related macular degeneration can also result in severe loss of the central vision but they rarely causes the blindness. It can, however, make it the difficult to read, to drive or to perform the other daily activities that can require fine central vision. the Age-related macular degeneration is also the leading cause of the vision loss in older adults. Although AMD that doesn't cause the complete blindness, the loss of the central vision and can make it harder to do the everyday tasks. so Dry AMD, a condition that is also causes by the gradual vision loss, is the most common form.
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In which wedge of the two circle graphs do you observe the greatest difference between
the two regions?
Answer:
Explanation:
a.had to guess but there you go
How could the nervous system cause a skeletal muscle to produce the most forceful contraction it is capable of?
By triggering action potentials from every single motor neuron that regulates the muscle at a rate that causes tetanus in every fiber.
What are motor neurons, and what are they used for?The central nervous system includes motor neurons, which are cells that transmit instructions from the nerves and muscles that control our movements, speech, swallowing, and breathing.
What makes it a motor neuron?Motor neurons (also referred to as efferent neurons) are indeed the nerve cells responsible for carrying signals part of the peripheral nervous system towards muscles to cause movement. Neurotransmitters are released by them to set off reactions that cause muscle movement..
In the body, how many motor neurons are there?There are around 500,000 of them, carrying information first from CNS to peripheral effectors throughout the peripheral tissues but instead organ systems. Motor neuron axons, or efferent fibers, convey information away from the central nervous system..
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Glucose is broken down in most of your cells to form carbon dioxide, oxygen, and the energy currency of the cell called atp. what type of chemical reaction is this?
Glucose is broken down in most of your cells to form carbon dioxide, oxygen, and the energy currency of the cell called is Catabolic reaction
Since the energy is released by the breakdown of glucose it is a exothermic reaction.
Catabolic reaction big molecule gets converted into small molecules it is a catabolic reactionCatabolic reaction is when a chemical reaction that results in the break-down of more complex organic molecules into simpler substances and Release energyAnabolism is a chemical reaction in which simpler substances are combined to form more complex molecules and Requires energyCatabolic reaction provides Energy and building blocks for anabolismTo know more about Catabolic reaction visit : https://brainly.com/question/13031513
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Can someone help me with this
Answer:
c is probably the correct answer
Which forest harvest method would leave the forest as close to a natural old growth forest as possible?
The selective harvest method would leave the forest as close to a natural old-growth forest as possible.
Only the ripest coffee cherries are harvested and produced using the selective harvesting method. The unripe ones are left on the tree to continue maturing, while.
Additionally, you may be confident that only the best quality cherries are received because only ripe cherries are chosen. Undoubtedly, ripe coffee cherries provide your cup with a nice and pleasant flavor that meets your preferences. a flavor that is both sweet and natural sugary because the fruit had been allowed to develop its sugar over time.
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what is a symptom of too much stress over a long period of time? insomnia insomnia elevated antibodies elevated antibodies hallucinations hallucinations low-grade fever
Answer:
The answer is insomnia.
Explanation:
"Insomnia" means habitual sleeplessness. Ultimately, becoming restless and unable to maintain one's sleep-wake cycle, which will cause stress overtime.
Explain why the presence of a capsule or slime layer would benefit a bacterial cell.
The presence of a capsule or slime layer would benefit a bacterial cell as it helps in protection, adhesion and prevents dehydration.
Capsule is the outer layer present in many bacterial cells. It is a part of the cell envelope, which is made up of polysaccharides. It is not easy to get rid of this layer and it can also a cause of various diseases. The capsule also protects the bacterial cell from being engulfed by the white blood cells.
Dehydration is the condition when the an organism's body lacks the required amount of water of fluids. Bacterial cells can also suffer from dehydration, however they have extreme capacity to survive dehydration for long period of times. The slime or capsule layer also prevent the water loss, preventing dehydration.
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Describe the role of countercurrent exchange in facilitating both respiration and thermoregulation (see Concept 40.3).
Similar to fish, water flows across the gills of geese in the opposite direction of blood through the gill capillaries, promoting fish-like respiration and thermoregulation. As a result, the water extraction along the exchange surfaces is improved.
The process through which an organism's body maintains a steady internal temperature is known as thermoregulation. The majority of birds are homeothermic, which implies that their active metabolic processes help them to keep their body temperatures within a 1°C range.Blood travels through the gills during countercurrent oxygen exchange in the opposite direction from water flowing over them. In contrast, countercurrent exchange enables the blood to absorb 90% of the oxygen in the water.Countercurrent heat exchangers in the blood of geese allow heat to move from warmer to cooler blood, minimizing heat loss. Such animals use bodily insulation and evaporative systems, such sweating and panting, to regulate their body temperature.Learn more about the countercurrent oxygen exchange with the help of the given link:
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a computer program recognizes an orf by looking for ribosomal binding sites, start codons, and stop codons with an appropriate number of nucleotides between each element. what is a drawback of this approach?
It's possible to overlook unusual yet functional genes and non-coding RNA.
RNA- All living cells contain ribonucleic acid (RNA), a nucleic acid with properties comparable to those of DNA. However, RNA is often single-stranded, unlike DNA. Instead of the deoxyribose present in DNA, the backbone of an RNA molecule is made up of alternate phosphate groups and the sugar ribose.
Functional genes- A segment of DNA responsible for producing one Polypeptide or another gene product. Thus, the "one cistron" theory replaces the "one gene/one enzyme" idea.
Non-coding RNA- An RNA molecule that does not convert into a protein is known as a non-coding RNA (ncRNA).
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Which are characteristics of cachexia? 1. increased appetite 2. weight gain 3. early satiety 4. altered metabolism
Answer: early satiety
Why does testing for hCG (human chorionic gonadotropin) work as a pregnancy test early in pregnancy but not late in pregnancy? What is the function of hCG in pregnancy?
The testing for hCG works as a pregnancy test in early pregnancy but not in late pregnancy because the hCG level rises in the first week of pregnancy and declines in the later trimesters.
During pregnancy, the hCG levels increase in the first trimester, peak, and then decline in the later trimesters as the pregnancy progresses. Therefore, hCG works as a pregnancy test in early pregnancy but not in late pregnancy.
Functions of hCG in pregnancy:-
hCG promotes the growth of cytotrophoblast cells.During the menstrual cycle, pituitary hCG mimics luteinizing hormone actions.The hCG hormone has an α-subunit and a β-subunit.During pregnancy, hCG also promotes the growth of fetal organs.To learn more about hCG and pregnancy, visit: https://brainly.com/question/1619156
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Four islands in this study, ranging in area from about 100 to 800 square miles, each contained about 100 bird species. What does such variation tell you about the simple assumptions of the island equilibrium model?
The authors provide an equilibrium model that is based on the idea that as the number of species on an island increases, the rate at which new species arrive on the island would drop and the rate at which native species extinctions occur will rise.
Definition of the equilibrium model:A sociological theory on how people act in groups is the equilibrium model of group development (also known as the equilibrium model). According to the model, group members would strive to keep a delicate balance between their task-oriented (instrumental) and socio-emotional (expressive) requirements.
The equilibrium model does it work?Nobel Prize laureate Vernon Smith tested this approach in experiments, and he discovered that it consistently produced positive results.
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When you jump off a high diving board into water, you notice great resistance of water. this resistance is called __________ and is caused by water's great ______.
When you jump off a high diving board into water, you notice great resistance of water. this resistance is called surface tension and is caused by water's great cohesiveness.
Surface tension is the tendency of liquid surfaces at rest to shrink into the minimum surface area possible. Surface tension is what allows objects with a higher density than water such as razor blades and insects to float on a water surface without becoming even partly submerged.
Surface tension could be defined as the property of the surface of a liquid that allows it to resist an external force, due to the cohesive nature of the water.
Surface tension has the dimension of force per unit length, or of energy per unit area. The two are equivalent, but when referring to energy per unit of area, it is common to use the term surface energy, which is a more general term in the sense that it applies also to solids.
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Every fall, clusters of hundreds of danaus plexippus, or monarch butterflies, migrate into mexico. the traveling group of d. plexippus is one example of a(n) _______. a. population b. ecosystem c. community d. biome please select the best answer from the choices provided a b c d
Every fall, clusters of hundreds of Danaus plexippus, or monarch butterflies, migrate into Mexico. the travelling group of the population.
It can be also referred to as species.
The greatest collection of organisms that consists of two individuals of the opposing sex or breeding types that may generate offspring that are able to reproduce through sexual reproduction is referred to be a species.
Due to its size and eye-catching orange, black, and white design, the Monarch butterfly species is one that most people are familiar with. It is also remarkable since some of these species migrate for the winter, contrary to the majority of butterflies.
These species, migrate from one location to another for a period of time before returning and repeating the process every year.
Every year, the group of hundreds of Danaus plexippus relocates in pursuit of better environmental circumstances.
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It is very important for human service professionals to remember to be sensitive to differences in?
It is very important for human service professionals to remember to be sensitive to differences in cultures, genders, and ages.
What are the moral requirements for those who work in human services?Respecting the welfare and dignity of all people, fostering individual autonomy, valuing cultural variety, supporting social justice, and behaving with honesty, sincerity, and impartiality are among the essential ideals of the human services profession.
Human service providers must adhere to a strict code of ethics because of the individualised nature of their work. This code is intended to provide norms for human service professionals' daily conduct and to safeguard the rights and dignity of those workers, their clients, and society.
Codes of ethics encourage consideration, discretion, compromise, and acknowledgment of the client's right to informed consent and self-determination. Employees should respect the client's right to privacy by only collecting information necessary to offer services.
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For subjects in the short protocol, what was the mean ACTH level at waking? Using the data in the last two columns, calculate the mean level 30 minutes later. Was the rate of change faster or slower in that 30-minute period than during the interval from 1: 00 to 6:00 a.m.?
The rate of change faster or slower in that -
Between 1:00 and 6:00 a.m., the rate of change was (37.3 - 9.9)/5 = 5.5 pg/mL/hr. In the short protocol participants, the rate of change occurred more quickly in the first 30 minutes after awakening than it did between 1:00 and 6:00 am.
The morning (6 to 8 am) is when ACTH levels are at their highest, and the evening (late) is when they are at their lowest (6 pm to 11 pm). If they suspect abnormal levels, a doctor may check the ACTH levels in the morning or evening. ACTH and cortisol levels are usually assessed together.The timing of ACTH secretion may be influenced by a person's expectation of waking up at a particular time. 15 healthy participants in their mid-20s had their mean levels of ACTH measured over the course of three nights to evaluate the influence of anticipation.Both the anticipated and actual wake-up times for the experiment in the short protocol are 6 am. The mean value in the subsequent 30 minutes after walking is 10.6 at the same time.The rate of change in the first half hour after awakening was equal to 21.2 pg/mL/hr or (10.6 pg/mL)/(0.5 hr). Between 1:00 and 6:00 a.m., the rate of change was (37.3 - 9.9)/5 = 5.5 pg/mL/hr.
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The papillary layer of the dermis is most closely associated with which layer of the epidermis?.
Answer:
The papillary layer of the dermis is most closely associated with Stratum Basale layer of the epidermis.
Explanation:
Fibers like collagen and elastin that make up the papillary layer create a loose mesh because this layer is formed of connective tissue of the areolar that is loose. Dermal papillae, which resemble fingers, are formed when this surface of the dermis extends further to stratum basale of something like the epidermis. Columnar basal cells, which are continually dividing and also being forced forward towards the surface, may be found in this layer. Additionally, melanocytes that create melanin (the pigment that gives colour to skin) reside inside the stratum basale.
The various layers of the epidermis regularly regenerate due to epidermal stem cells. . Our hair follicles are constantly renewed because of hair follicle stem cells.
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A tool that belongs in the heating category is *
O beaker
Otest tube holders
Ostopwatch
O round bottom flask
In words, describe how the data differ between the unlimited water and no-water conditions for the following:
(a) Osmolarity of urine
The osmolality of urine is expressed in milliosmoles per kilogram of water (mOsm/kg).
What is meant by Urine osmolality?The osmolality of urine is expressed in milliosmoles per kilogram of water (mOsm/kg). A typical result is 500 to 850 mOsm/kg, but it can be slightly higher or lower. The precise standards for normal results may differ depending on your doctor and laboratory.
Large molecules (protein), cells, and casts have little effect on osmolality. Urine osmolality varies depending on the fluid and electrolyte balance of the body as well as the nitrogen content of the diet.
Urine osmolality is also useful in assessing a child with polyuria. A urine osmolality of 150 mOsm/kg indicates a urine concentration defect, such as central or nephrogenic diabetes insipidus, whereas a urine osmolality of 300 to 350, associated with a high specific gravity, indicates osmotic diuresis.
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What is a discrete variation that could be changed by the environment or by learning?
Discrete variation is either/or and is frequently brought on by a select few genes, either present or absent.
One gene, for instance, controls the way we "roll" our tongues. The only options are to roll our tongues or not; there is no middle ground.
Human environmental variables could, for instance, include hair length, or the length at which a person chooses to wear their hair. Scars – from your own unique accidents.
The strength of your muscles depends on how much exercise you get.The many types of variation are dispersed along a continuum in continuous variation. Discontinuous variation, on the other hand, categorizes the many variants into distinct groups.Discrete characteristics like widow's peak and cleft chin are uncommon in humans.Learn more about variations here:
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WRITE ABOUT A THEME: ORGANIZATION In a short essay (100-150 words), explain how the evolution of lignin affected vascular plant structure and function.
The evolution of lignin affected vascular plant structure and function because it moves water and give strength to the cell wall.
How did the evolution of lignin affect vascular plant structure and function?Lignin is a type of complex organic polymers that is the key structural substance in the supporting tissues of most plants. Lignin are important in the formation of cell wall in plant cell. Lignin moves water and give strengthens to the cell wall of the plant cell. It is one of the major component of the secondary wall of tall plants. It is produced in the cells that is related to the transport system.
So we can conclude that The evolution of lignin affected vascular plant structure and function because it moves water and give strength to the cell wall.
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