The neuronal system you are referring to is called the mirror neuron system.
Mirror neurons are a type of brain cell that fires both when an individual performs an action and when they observe someone else performing the same action.
\This system was first discovered in the 1990s by Italian neuroscientists studying macaque monkeys. Since then, mirror neurons have been found in humans as well, and they are thought to play a role in social cognition, empathy, and the learning of new motor skills through observation and imitation.
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you have synthesized an oligopeptide containing an rgd motif surrounded by other amino acids. what is the effect of this peptide when added to a fibroblast cell culture grown on a layer of fibronectin adsorbed to the tissue culture?
The oligopeptide containing an RGD motif is a well-known cell adhesion peptide sequence that specifically binds to integrin receptors on the surface of cells, including fibroblasts. When added to a fibroblast cell culture grown on a layer of fibronectin adsorbed to the tissue culture, the RGD-containing peptide can enhance or modulate cell adhesion and spreading.
Fibronectin is a large glycoprotein that is found in the extracellular matrix (ECM) and is a major component of the provisional ECM that is formed during wound healing. It plays a crucial role in cell adhesion, migration, and differentiation. Fibronectin binds to integrin receptors on the surface of cells through the RGD motif and other binding sites, and this interaction is important for cell attachment and spreading.The addition of an RGD-containing peptide to the fibroblast cell culture grown on a layer of fibronectin adsorbed to the tissue culture can compete with the endogenous RGD-binding sites on fibronectin for integrin receptor binding. The RGD peptide may enhance cell adhesion and spreading by providing additional RGD-binding sites for integrins, which can promote stronger cell-matrix interactions.
Overall, the addition of an oligopeptide containing an RGD motif surrounded by other amino acids to a fibroblast cell culture grown on a layer of fibronectin adsorbed to the tissue culture can enhance cell adhesion and spreading by binding to integrin receptors and promoting stronger cell-matrix interactions.
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the only reason why saccharomyces cerevisiae yeast cells ferment in the presence of oxygen is because
Answer:
Because yeast only produces alcohol and CO²
Explanation:
(which produces carbonation) through the fermentation pathway, the presence of O2 will prevent any build-up of either alcohol or CO².
I hope this helps! :)
The drought and high temperatures last summer have affected the water temperatures and levels of a creek
by the school. The macroinvertebrates (insects, crustaceans, mollusks that bass eat) living in the creek are
reduced by half. Among other fish, the creek normally has 100 bass living there.
1) Draw a graph showing a prediction of what would happen to the bass population of the creek.
2) Explain the difference between density independent and density dependent limiting factors.
Based on the information provided about the drought, it is likely that the bass population in the creek will be negatively impacted by the reduced number of macroinvertebrates.
How would drought affect the bass population of the creek?Since bass relies on these organisms as a food source, a reduction in their population could lead to a decline in the number of basses that can survive in the creek. As a result, it is possible that the bass population may decrease in size over time.
Density-independent limiting factors are environmental factors that affect a population regardless of its size or density, such as natural disasters or climate change. These factors can have a significant impact on a population's growth and survival, but they do not depend on the size of the population.
In contrast, density-dependent limiting factors are factors that become more important as the population density increases. For example, competition for resources, predation, and disease are all factors that can limit population growth as the population density increases
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1. Identify the part of the flower indicated with
the arrow. What is its function?
The part of the flower indicated with the arrow is stem.
A stem refers to the main structural part of a plant that supports leaves, flowers, and fruits, and serves as a conduit for water, nutrients, and sugars between roots and leaves. Stems are crucial for the growth and development of plants, and they have several important functions.
Structural support: The stem provides support for the plant, holding it upright and maintaining its shape. It helps plants resist the force of gravity and withstand external pressures such as wind, rain, and snow.
Transport of water and nutrients: The stem contains vascular tissues, including xylem and phloem, which transport water, nutrients, and sugars throughout the plant. Xylem conducts water and minerals from the roots to the leaves, while phloem transports sugars and other organic molecules from the leaves to other parts of the plant.
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spinal nerves are spinal nerves are purely motor. both sensory and motor. involuntary. interneuronal. purely sensory.
Spinal nerves are not purely motor or purely sensory, but rather they are mixed nerves that contain both sensory and motor fibers. The sensory fibers in spinal nerves carry information from the body to the central nervous system (CNS), while the motor fibers carry commands from the CNS to the muscles and glands in the body.
Spinal nerves are not purely motor, but rather contain both sensory and motor fibers. These nerves originate from the spinal cord and extend out to various parts of the body. They are essential for transmitting signals between the central nervous system and the rest of the body.
Each spinal nerve contains both sensory and motor fibers, which are bundled together within a protective sheath called the epineurium. The sensory fibers are responsible for transmitting sensory information, such as touch, temperature, and pain, from the body to the spinal cord and brain. The motor fibers, on the other hand, are responsible for transmitting motor commands from the brain and spinal cord to the muscles and other organs.
It's important to note that spinal nerves are not involuntary. In fact, many of the movements that we make every day, such as walking, running, and lifting objects, are under voluntary control and are mediated by spinal nerves.
Spinal nerves also contain interneurons, which are specialized neurons that connect sensory and motor neurons within the central nervous system. These interneurons help to coordinate and integrate information from different parts of the nervous system, allowing for complex movements and behaviors.
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ow did the national geographic video use media to aid understanding of how flu viruses spread? a. slow-motion graphics showed how droplets pass through the air. b. photographs illustrated a farm yard where animals got sick. c. there were graphs showing statistics of flu cases by year. d. there was a picture of a sick child wearing a pink jacket.
The national geographic video used media to aid understanding of how flu viruses spread by utilizing slow-motion graphics that showed how droplets pass through the air.
This visual aid helped viewers to better understand the mechanics of transmission. While photographs illustrated a farm yard where animals got sick, and there were graphs showing statistics of flu cases by year, it was the slow-motion graphics that really helped to drive home the message. There was no mention of a picture of a sick child wearing a pink jacket in relation to aiding understanding of how flu viruses spread.
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How are the 3:1 and 9:3:3:1 ratios related to each other?
The 9:3:3:1 ratio linked with a phenotypic ratio (BbEe BbEe) is a classic Mendelian exemplar of independent assortment.
What exactly is a genetic marker in blood?exactly is RBC phenotyping RBC phenotyping (the identification of the kind of genes located on the RBC refers to finding out the kind of antigens present here on RBC. The ABO/Rh type is determined in the 'type but also screen' procedure on all patients who require transfusions. An extended antigen phenotype, on the other hand, may be performed.
What exactly is phenotypic variation?The diversity in phenotypes which it occurs in a population is thus referred to as phenotypic variation. People, for example, are of all shapes or sizes: height, weight, but instead body structure are all variable phenotypes. Variable phenotypes include hair color, eye color, and also the ability to flip your tongue.
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investigators have engineered a gene that encodes a protein bearing an er signal sequence followed by a nuclear localization signal. what would be the likely fate of that protein?
The likely fate of that protein that it will be recognized by an SRP and enter the ER
The protein with an ER signal sequence followed by a nuclear localization signal is most likely to enter the endoplasmic reticulum after being recognised by a signal recognition particle. This happens because the protein is directed to the ER by the ER signal sequence, and the SRP attaches to the sequence to help the protein enter the ER.
A polypeptide sequence found at a protein's N-terminus, sometimes referred to as an endoplasmic reticulum signal, guides the protein's transit to the endoplasmic reticulum. A nuclear localization signal is a brief sequence of amino acids that serves as a signal for the movement of molecules via the nuclear pore complex from the cytoplasm to the nucleus.
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Which observable process could be used to explain the formation of a
landform such as the Grand Canyon?
O A. Erosion from flowing water over millions of years
B. Flooding and climate change in the past few hundred years
O C. Cracks from tectonic movement when Earth was formed
D. Sediments carried by glaciers and deposited thousands of years
ago
A. Erosion from flowing water over millions of years could explain the formation of a landform such as the Grand Canyon.
The Grand Canyon was formed by the erosion of the Colorado River over millions of years, carving through layers of rock to create the iconic canyon. The river cut through the rock layers due to the force of flowing water, which gradually wore away the softer rock and sediment, leaving behind the harder rock layers that form the canyon walls.
This process of erosion by water is a common mechanism for the formation of many landforms, such as canyons, valleys, and gorges, especially in regions with significant water flow over long periods.
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how was the bacterium e.coli played a role in the development of biotechnology
Explanation:
how is the energy stored in a molecule of atp used by the sodium-potassium pump?
The energy stored in a molecule of ATP is used by the sodium-potassium pump in order to move ions across the cell membrane against their concentration gradient.
Specifically, the pump uses the energy from the hydrolysis of ATP to transport three sodium ions out of the cell and two potassium ions into the cell.
This process helps to maintain the proper balance of ions inside and outside of the cell, which is important for a variety of cellular functions such as nerve signaling and muscle contraction.
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which of the following is true about glucagon's action? group of answer choices glucagon is a signal (that indicates starvation) to stimulate glycogen degradation. glucagon acts mainly on muscle cells to stimulate glycogen breakdown in those cells. glucagon acts directly on a membrane protein called adenylate cyclase which then produces cyclic amp. glucagon is synthesized in the liver. glucagon triggers synthesis of glucose in the liver.
It is true that glucagon acts as a signal (that denotes famine) to promote glycogen breakdown. Option 1 is Correct.
A crucial factor in controlling the metabolism of glucose is the hormone glucagon, which is generated by the alpha cells of the pancreas. As blood glucose levels drop, the hormone glucagon is released into the bloodstream to tell the liver to release glucose into the bloodstream to keep blood glucose levels stable.
Moreover, glucagon encourages gluconeogenesis, or the production of glucose from non-carbohydrate sources including fatty acids and amino acids. Glucagon stimulates glycogen breakdown and glucose production by acting on liver cells rather than muscle cells. It works by activating an adenylate cyclase-coupled G protein-coupled receptor on the cell membrane, which causes the synthesis. Option 1 is Correct.
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Correct Question:
which of the following is true about glucagon's action? group of answer choices
1. glucagon is a signal (that indicates starvation) to stimulate glycogen degradation.
2. glucagon acts mainly on muscle cells to stimulate glycogen breakdown in those cells.
3. glucagon acts directly on a membrane protein called adenylate cyclase which then produces cyclic amp.
4. glucagon is synthesized in the liver. glucagon triggers synthesis of glucose in the liver.
2. in lab you will be using different antisera to make observations about the abo blood system. a. what do the antibodies in antiserum a target?
Antiserum A contains antibodies that target the B antigen on red blood cells in the ABO blood system. Antiserum A is a term commonly used in immunology and serology to refer to a type of blood serum that contains antibodies specifically targeting a particular antigen or group of antigens
Antiserum A is a type of blood serum that contains antibodies that specifically target the B antigens on the surface of red blood cells in the ABO blood system. These antibodies are produced by individuals with blood type O or blood type A, as they do not have B antigens on their own red blood cells. When antiserum A is used in a laboratory setting, it is typically used to determine the presence or absence of B antigens on red blood cells, which can help identify the blood type of an individual as either type A or type O.
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true or false: for humans and other animals, the ability to move is essential to maintaining homeostasis.
True. Homeostasis is the process of maintaining a stable internal environment within the body, and movement is an essential part of this process.
Movement promotes healthy body temperature regulation, oxygen and nutrient circulation, and waste product elimination.
The immune system and the cardiovascular system both benefit from regular movement.
For people, exercise promotes stress reduction, a healthy weight, and mental well-being.
Animals who are in motion are more likely to find food, water, and shelter. Other physiological functions like migration and reproduction depend on movement as well.
Therefore, sustaining homeostasis requires mobility in both people and animals.
Complete Questions:
Humans and other animals need to move in order to maintain homeostasis:
True or False?
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why is it important that the unmutated pglo plasmid is digested with the same restriction enzymes as the mutated pglo plasmid?
It is important to digest the unmutated pglo plasmid with the same restriction enzymes as the mutated pglo plasmid in order to ensure that they have the same recognition sites for the enzymes.
This ensures that the unmutated and mutated plasmids will have the same size and fragment pattern after digestion, which is essential for proper analysis and comparison.
If different enzymes were used to digest the two plasmids, their fragment patterns would be different, making it difficult to compare them and determine the effect of the mutation.
Therefore, using the same restriction enzymes is necessary for consistency and accurate analysis of the genetic material.
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multicellular parasites group of answer choices are most effectively cleared by type 2 immunity. are most effectively cleared by type 1 immunity. are primarily cleared by the activity of phagocytic cells. provoke strong immune responses due to the high antigenicity of parasite antigens. are cleared by responses occurring in mucosal tissues that are dependent upon iga secretion.
Multicellular parasites are primarily cleared by the activity of phagocytic cells.
Here, correct option is A.
However, they also provoke strong immune responses due to the high antigenicity of parasite antigens. In terms of specific immune responses, different types of parasites may be effectively cleared by different types of immunity.
Multicellular parasites are most effectively cleared by type 2 immunity. This immune response is characterized by the activation of specific immune cells, such as eosinophils, mast cells, and basophils, which help to combat these larger parasites.
For example, some multicellular parasites may be most effectively cleared by type 2 immunity, while others may be primarily cleared by type 1 immunity. Additionally, some parasites may be cleared by responses occurring in mucosal tissues that are dependent upon IgA secretion.
Therefore, correct option is A.
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most people develop wisdom teeth by early adulthood. wisdom teeth can cause pain or crowd out their other teeth, so many people have these teeth removed. wisdom teeth in modern humans do not perform a crucial life function.which statement best describes the importance of wisdom teeth to human evolution?(1 point)responsesthey are evidence that humans have never evolved.they are evidence that humans have never evolved.they are evidence that humans cannot evolve.they are evidence that humans cannot evolve.they are vestigial structures that never performed a necessary function for human ancestors.they are vestigial structures that never performed a necessary function for human ancestors.they are vestigial structures that once performed an important function for human ancestors.they are vestigial structures that once performed an important function for human ancestors.
The statement best describes the importance of wisdom teeth is They are vestigial structures that once performed an important function for human ancestors, option C.
Your molars, or strongest, broadest teeth, which crush food, are called wisdom teeth. However, not everyone has all of their wisdom teeth. They are the ones that adult lips are lacking the most frequently. Some people contend that changes in our food over time have caused changes in our jaws.
These molars are more susceptible to problems than any other teeth. In the United States, around 10 million wisdom teeth are pulled annually. Impaction, in which the tooth may not have enough space to emerge from the gum as it should, is one of the main causes.
Most wisdom teeth that exhibit illness symptoms or have obvious issues should be removed. Among the causes are:
cavities or infectionsLesions damage to the teeth closeloss of bone around rootsLearn more about Wisdom tooth:
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What decimated (killed) the elephant population and made it decrease?
Answer:
Once common throughout Africa and Asia, elephant populations have experienced significant declines over the last century. The greatest threat to African elephants is poaching for the illegal ivory trade, while Asian elephant populations are most at risk from habitat loss and resulting human-elephant conflict.
A(n) __________ is a group within the human species that is identified by a society as presumably having certain biologically inherited physical characteristics.A) race B) ethnic group C) minority group D) out-group
A race is a group within the human species that is identified by a society as presumably having certain biologically inherited physical characteristics. So, option A is correct.
In many societies, individuals are categorized based on these physical traits, which may include skin color, hair texture, facial features, and other visible differences. These classifications, however, do not necessarily represent the true genetic diversity within the human species. Rather, they are often social constructs that have been used historically to create distinctions between groups of people.
It is important to recognize that these distinctions are not scientifically valid, as genetic variation within any given racial group often exceeds the variation between different racial groups. Nonetheless, the concept of race continues to play a significant role in how societies structure and understand human diversity.
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2. Discuss three distinguishing characteristics that organisms in the animal kingdom
share.
Answer:
All of them are multicellular, eukaryotic and are heterotrophic
describe three unintended consequences that have occurred in marine ecosystems when top predators are removed
Smaller, lower trophic level fish populations are kept from destroying ocean ecosystems by top predators. The fact that top predators would feed first on the diseased, disabled, and elderly members of lower trophic levels helps to maintain the health of marine ecosystems.
If top predators are eliminated from a coral reef ecosystem, smaller fish may multiply, allowing for an increase in algae on the corals, which in turn inhibits coral growth. In the absence of predators, prey can overpopulate. In addition to causing disease outbreaks that may spread to domesticated animals, this may also cause harm to nearby flora. Small predators like coyotes are subjugated by top predators like wolves, which controls their populations as well.
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Describe three examples of unintended consequences that have occurred in marine ecosystems when top predators are removed.
Question 4
1 pts
When DNA polymerase is in contract with Guanine (G) in the parent strand, what does it add to the
growing daughter strand?
O Thymine (T)
0 Adenine (A)
Phosphate
Cytocine (C)
The graph shows the populations of two species over time. Species 2 is a
parasite of Species 1. No other species is interacting with Species 1 or
Species 2: 65 PA
Population
Population vs. Time
Species 1
(host)
Species 2
The type of symbiotic relationship that the graph represents is a mutualistic relationship; option B.
What is mutualism in symbiotic relationships?Mutualism is a type of symbiotic relationship in which both organisms involved benefit from the interaction.
In mutualistic relationships, each organism provides a service or resource that the other needs, resulting in a positive outcome for both. This type of relationship is considered a win-win scenario because both partners benefit from the interaction.
A common example of mutualism in nature is the relationship between bees and flowers. Bees collect nectar from flowers as a source of food, and in the process, they help to pollinate the flowers, which allows the plants to produce seeds and reproduce. The flowers benefit from the pollination, and the bees benefit from nectar, resulting in a mutually beneficial relationship.
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Complete question:
The graph shows the populations of two species over time. Which type of symbiotic relationship does the graph represent?
A. commensal
B. mutualistic
C. parasitic
D. parent-offspring
E. predator-prey
One biome type that has not been as badly threatened as other biomes is
a) arctic tundra.
b) tropical rainforests.
c) grasslands.
d) temperate forests.
e) southern pine forests.
Grasslands are a biome characterized by vast areas of grasses and herbaceous plants with few or no trees. Option C is correct.
They are found on every continent except Antarctica and can be classified into different types, such as temperate grasslands (e.g., prairies in North America) and tropical grasslands (e.g., savannas in Africa).
In comparison, grasslands (c) have not been as severely threatened, although they are also facing challenges such as conversion of land for agriculture, grazing, and habitat loss due to human activities. However, grasslands have generally been less impacted compared to other biomes, and some grasslands, particularly those that are managed sustainably, still retain significant biodiversity and ecosystem functions.
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One biome type that has not been as badly threatened as other biomes are grasslands. The right option is C.
Grasslands are found in many regions across the world and are characterized by the dominance of grasses, as opposed to trees or other vegetation.
While grasslands have been impacted by human activities such as overgrazing and agricultural expansion, they are generally considered less threatened than other biomes such as tropical rainforests and coral reefs.
This is due in part to the fact that grasslands are often used for grazing or agriculture, which can actually help to maintain the ecosystem if done sustainably.
Additionally, many grasslands are found in temperate regions where there is less pressure from human populations and where conservation efforts have been more successful.
Overall, while grasslands still face threats from climate change and other human activities, they are one of the more resilient biomes and are an important ecosystem to protect. The correct option is C, grasslands.
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a researcher wanted to test the hypothesis that rats that had greater expression of a gene called pgc-1alpha would spend more time running around their cages. which type of graph would be best to explore a relationship between pgc-1alpha expression and time spent running?group of answer choicesline graph (with error bars)bar graphscatter plotline graph (no error bars)
If you want to find out how PGC-1alpha expression and time spent running a scatter plot are related, the type of graph you should use is the best one. The correct answer is (C).
Dots are used to represent the values of two distinct numerical variables in a scatter plot, also known as a scatter chart or a scatter graph. The place of each speck on the level and vertical hub demonstrates values for a singular data of interest. The relationship between variables can be observed with the help of scatter plots.
The scatter plot is used to show how one variable changes when another variable is changed. To test a theory that the two variables are related, the scatter plot is used.
With a certain confidence interval, a scatter plot can suggest a variety of correlations between variables. Weight and height, for instance, would be shown on the y-axis, while height would be shown on the x-axis. Positive (rising), negative (falling), or null (uncorrelated) correlations are all possible.
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Q- A researcher wanted to test the hypothesis that rats that had greater expression of a gene called PGC-1alpha would spend more time running around their cages. Which type of graph would be best to explore a relationship between PGC-1alpha expression and time spent running?
a. line graph (no error bars)
b. line graph (with error bars)
c. scatter plot
d. bar graph
the assimilation of co2 into organic compounds (triose phosphates) in green plants: group of answer choices involves condensation of the two-carbon compound acetate with co2 to form 3-phosphoglycerate. requires nadph. results in the production of atp. takes place at equal rates in light and darkness. takes place in the cytosol.
The assimilation of CO2 into organic compounds (triose phosphates) in green plants involves the Calvin cycle, which takes place in the stroma of chloroplasts.
What is Calvin cycle?
The Calvin cycle, also known as the light-independent reactions or the dark reactions, is a series of biochemical reactions that take place in the stroma of chloroplasts in photosynthetic organisms such as plants, algae, and some bacteria. The Calvin cycle is responsible for the synthesis of organic molecules, such as glucose, from atmospheric carbon dioxide (CO2).
The Calvin cycle can be summarized as follows:
Carbon fixation: CO2 is incorporated into an organic molecule, ribulose-1,5-bisphosphate (RuBP), to form a six-carbon compound that is immediately split into two molecules of 3-phosphoglycerate (3PG).Reduction: ATP and NADPH, generated during the light-dependent reactions of photosynthesis, are used to convert 3PG into glyceraldehyde-3-phosphate (G3P).Regeneration: Some of the G3P produced is used to regenerate RuBP, while the rest is used to synthesize other organic molecules such as glucose and starch.Therefore, the correct options for the given question would be:
involves the condensation of CO2 with a five-carbon compound (RuBP) to form 3-phosphoglyceraterequires NADPH (in addition to ATP) generated during the light-dependent reactions of photosynthesisresults in the production of ATP (in addition to NADPH)takes place predominantly in the light, as the light-dependent reactions that generate ATP and NADPH occur only in the light.takes place in the stroma of chloroplasts, where the enzymes of the Calvin cycle are located.To know more about light-independent reaction, visit:
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3. The unit states that any animal that can be domesticated probably already has been. Explain the logic behind the statement.
If an animal has the potential to be domesticated or brought under human control, then someone somewhere undoubtedly already has, according to the adage. This is because many things have been documented. I would consider this to be persuasive, therefore.
Is it possible to domesticate any animal?Any animal that can be domesticated, the organization claims, has probably already been. The difficulty of domesticating something, despite the fact that it is theoretically feasible, could have a significant historical consequence. Any animal needs to be domesticated, and huge mammals in particular are sometimes dangerous and slow to reproduce. This takes a concentrated effort across many human generations.For more information on domesticated animals kindly visit to
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A student studies the diagram shown.
What can be concluded about the relationship between genes, chromosomes, and inherited traits?
Group of answer choices
An organism obtains one allele for a gene of a specific trait from one parent on one chromosome.
An organism obtains two alleles for a gene of a specific trait from each parent on two chromosomes.
An organism obtains one allele for a gene of a specific trait from each parent on one chromosome.
An organism obtains two alleles for a gene of a specific trait from each parent on one chromosome.
Genes are the basic units of heredity, and they are located on chromosomes. Chromosomes are long strands of DNA that carry genetic information, including the genes that determine inherited traits.
What are chromosomes ?A chromosome is a long, thread-like structure made up of DNA molecules that contain the genetic information (genes) that determine inherited traits in living organisms. Chromosomes are found in the nucleus of every living cell, and they are responsible for carrying and passing down genetic information from one generation to the next.
Each chromosome is made up of two identical strands of DNA that are tightly coiled around each other, forming a structure known as a double helix. The DNA molecule is composed of a sequence of nucleotides, which are arranged in a specific order to code for different traits.
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can someone send a link on this topic or help me do it in any way?? its due tomorrow
Answer:
You should explain more...
Explanation:
My food web is made of ___ ___Each of which Starts with a producer and includes consumers
Answer:
A food web is made of web chains
My food web is made of food chain, each of which Starts with a producer and includes consumers with their respective trophic levels. Many food chains are intertwined to form a food web that share niches.
A particular ecosystem of a place usually have three different types of food chains. They are; grazing food chain made of producers and primary consumers, consumers food chain made of carnivores, and the detritus food chain made of microbes.
Hence, based on the above-mentioned statements, it can be pointed out that a food web is made of a food chain(s) each of which contains a set of producers and consumers.
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