Geographical isolation (vicariance) is the main reason for the evolution of either side mouse into new species.
What is geographical isolation?
Two populations of the same species are geographically separated by a barrier, they will eventually become genetically distinct from one another. Even when they are exposed to the same kinds of environmental selection forces and are living in the same region, two populations of the same species can yet become genetically distinct from one another.
A new river cuts through a land mass, separating populations of mice on either side. these mice then evolve into new species on the two sides of the land mass, the separation of a group of organisms by a geographic barrier, resulting in the differentiation of the original group into new varieties or species.
Hence, vicariance is a kind of evolution caused by geographical isolation.
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researchers collected seeds from a certain wild plant and planted them in groups of kin (seeds of the same mother plant) or non‑kin (seeds from different plants). each group of four seeds was planted either together in one pot or in a cluster of four pots that contained the same volume of soil. after eight weeks, the researchers measured the amount of roots each plant had produced. they found that related plants grown together in one pot produced smaller root systems so as not to compete with one another. plants grown in separate containers and non‑kin plants grown in a single container had 15% more roots.
It is an experiment.
Experiment to demonstrate that related plants grown together in one pot produced smaller root systems in order to avoid competition, plants grown in separate containers, and nonkin plants grown in a single container had 15% more roots.
The complete question is:
Researchers collected seeds from a certain wild plant and planted them in groups of kin (seeds of the same mother plant) or non‑kin (seeds from different plants). each group of four seeds was planted either together in one pot or in a cluster of four pots that contained the same volume of soil. after eight weeks, the researchers measured the amount of roots each plant had produced. they found that related plants grown together in one pot produced smaller root systems so as not to compete with one another. plants grown in separate containers and non‑kin plants grown in a single container had 15% more roots. Was this a sample survey, an observational study, or an experiment? an observational study an experiment a sample survey.
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which statement correctly explains how fertilization produces a diploid cell?
Pls help I’ll give you 25 pints
Answer:
1. Water
2. groundwater and ocean
3. evaporation and transpiration.
4. precipitation and runoff
5. precipitation
6. pollutants could be brought down to contaminate rivers, streams, lakes, and oceans.
Using your knowledge about the relationship between cell cycle and cancer,
explain what was happening with the cells from Henrietta Lacks
This is for genetics
The relationship between cell cycle and cancer is based on that cancer cells undergo uncontrolled cell cycles due to mutations that affect this process, which occurs in HeLa cells.
What are HeLa cells?HeLa cells represent one of the ist worldwide known cell lines of cancer cells obtained from Henrietta Lacks, specifically cancer cells derived from cervical cancer.
Therefore, we can conclude that HeLa cells are cancer cells, which can divide indefinitely because they suffered mutations that affected certain aspects of the normal cell cycle, thereby generating tumorigenic cells that can be used as cell lines.
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Blood type is an example of ____________, in which two alleles may be expressed, but neither one may be dominant over the other.
Blood type is an example of codominance, in which two alleles may be expressed, but neither one may be dominant over the other.
In the field of genetics, codominance can be described as a phenomenon in which the different types of alleles for a particular gene are both expressed in an organism. There is no recessive allele in such a case as both alleles express themselves.
An example of codominance is the ABO blood group system. All the alleles A, B and O express themselves separately and none of them is recessive to the other. Both the alleles for these genes express themselves in an individual and determine the blood type of an individual.
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which of the following statements is false? group of answer choices a-b-o antigens are present in all human blood. dried bloodstains may tentatively be identified as blood by a color test. all bloods contain the enzyme hemoglobin. the kastle-meyer test is used to determine whether blood is of human origin.
The correct statement is the Kastle-Meyer test is used to determine whether blood is of human origin.
What is Kastle-Meyer test?The Kastle-Meyer test is a presumed blood test that was initially introduced in 1903 and uses the chemical indicator phenolphthalein to look for potential hemoglobin present.
What does a Kastle-Meyer test do?Since many years ago, the three-stage Kastle-Meyer (KM) test has been employed as a quick, presumptive test for blood. Using hydrogen peroxide to catalyze the oxidation of the indicator phenolphthalein, which turns it pink, the test determines the existence of hemoglobin's (heme) component.
Thus from above conclusion we can say that the correct statement is the Kastle-Meyer test is used to determine whether blood is of human origin.
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Question 4
Which describes this statement, "The frog is 4 cm long"?
A) inference
B) quantitative data
C) control group
D) qualitative data
Answer: Quantitative Data
Explanation:
The statement is describing a measurement taken of the frog.
A is wrong because we are certain the frog is 4 centimeters
B is correct
C is wrong because we are focusing on a single data point
D is wrong because 4 centimeters is a specific quantity not a "quality"
D. At a research lab, a scientist carelessly pours cultures of living microbes down the drain.
Classification:
Explanation:
At a research lab, a scientist carelessly pours cultures of living microbes down the drain.
Classification :Bacterial pollution
Explanation: The living microbes are dangerous bacteria that can cause dangerous bacterial pollution which can cause disease and infections.
What are microbes?Microbe, is an organism of microscopic size that can exist as a single cell or as a colony of cells which are also called microorganisms. They live in water, soil and air. Some microbes are pathogenic others are non pathogenic.
The microbes can be grouped into five main types:
viruses bacteria archaeafungi protists.Microscopic organisms, including bacteria, fungi and viruses, can cause disease in plant and animals.. But there are trillions of microbes living in and on your body right now. Most of the bacteria are useful . In fact, they help you digest food, protect against infection and even maintain your reproductive health.
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what pair of molecules are commonly used by living cells to carry electrons and hydrogen atoms (thus serving as reserve chemical energy and electron transport molecules) during aerobic cellular respiration reactions?
NADH & FADH₂ pair of molecules are commonly used by living cells to carry electrons and hydrogen atoms.
Cell respiratory is the system with the aid of which biological fuels are oxidized in the presence of an inorganic electron acceptor such as oxygen to supply big quantities of energy, to power the majority production of ATP.
Cell respiration is a chain of chemical reactions that spoil down glucose to provide ATP, which may be used as power to strengthen many reactions at some stage in the frame. There are 3 principal steps of cell respiratory: glycolysis, the citric acid cycle, and oxidative phosphorylation.
Cellular respiratory is the procedure by which food, within the form of sugar (glucose), is transformed into energy inside cells. Mobile respiration is the method with the aid of which cells in plant life and animals damage down sugar and flip it into electricity, which is then used to carry out work on the cellular degree. The motive of cell respiration is simple: it presents cells with the energy they need to feature.
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Which molecule would pass through the membrane by simple
diffusion?
Answer:
Oxygen
Explanation:
Answer: gases such as 0z
Explanation:
List several factors that may interfere with an embryo's development
Answer:
Genetic, nutritional, environmental, uteroplacental, and fetal factors have been suggested to influence fetal growth. Uteroplacental and umbilical blood flow and transplacental glucose and fetal insulin are major determinants of fetal growth.
How do ions help keep your heart beating? Responses distributing electrical charges distributing electrical charges easily transporting messages easily transporting messages dissolving in your blood stream dissolving in your blood stream readily bonding with other atoms
According to the research, the correct option is distributing electrical charges. Ions help to keep the heart beating by distributing electrical charges.
How do ions keep the heart beating?Ions are a group of atoms that gains electrical charge and the direction of movement of these ions (in or out) influences the electrical activity in the human heart by sodium-potassium pump.
In this sense, the sequence of contractions of the heart is produced by depolarization distributing electrical charges, that is, the inversion of the electrical polarity of the membrane due to the passage of active ions.
Therefore, we can conclude that cardiac activity is mediated by the passage of ions that distribute electrical charges between the interior and exterior of heart cells.
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students conducted a controlled experiment to investigate whether sawdust provides enough nutrients to support plant growth. the students separated ten nearly identical sunflower seedlings into two groups. they grew the seedlings in the first group in potting soil and the seedlings in the second group in sawdust composed mostly of cellulose. after twenty days, the students recorded observations about the seedlings
The observed differences between the groups most likely resulted from differences in the ability of the seedlings to produce glucose monomers.
What are the nutrients required for plant growth?Nutrients are those compounds or substances that provide living organisms with the materials they require for their growth and metabolism.
The main nutrients required for the growth and development of plants include:
carbohydratesproteinslipidsminerals such as carbon, nitrogen, phosphorus, iron, magnesium, oxygen, etc,The nutrients required by plants for their growth are obtained from the soil, the atmosphere, as well as from water.
Plants require these minerals from fertilized soil, else they will have as stunted growth and will not be able to produce their food in the form of glucose monomers.
Saw dust lack these nutrients and plants will not grow well in sawdust.
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Complete question:
Students conducted a controlled experiment to investigate whether sawdust provides enough nutrients to support plant growth. The students separated ten nearly identical sunflower seedlings into two groups. They grew the seedlings in the first group in potting soil and the seedlings in the second group in sawdust composed mostly of cellulose. After twenty days, the students recorded observations about the seedlings in each group. The students’ observations are presented in the table. Treatment Group Mean Seedling Height Observations Seedlings in potting soil 18.5 cm The leaves have a dark green color and are normal in size. Seedlings in sawdust 4.8 cm The leaves have a grayish color and are small in size. The observed differences between the groups most likely resulted from differences in the ability of the seedlings to produce which of the following monomers?
Given equal probabilities of the birth of a xy or xx, what is the probability that a group of four siblings includes all xy? all xx? all xy or all xx?.
The Probability that a group of four siblings includes all xy is 1/16; all xx is 1/16; all xy or all xx is 1/8.
The area of mathematics known as probability deals with numerical descriptions of how likely it is for an event to happen or for a claim to be true. A number between 0 and 1 is the probability of an event, where, broadly speaking, 0 denotes the event's impossibility and 1 denotes its certainty. The likelihood of an event occurring increases as its probability increases. Tossing a fair (unbiased) coin is a straightforward illustration. The probability of either "heads" or "tails" is half since there are no other conceivable outcomes and the coin is fair, meaning that both outcomes ("heads" and "tails") are equally likely.
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A, Glucose turns into pyruvic acid. Energy and O 2 enter the cell. B, Oxygen and energy in the cell turn into H 2 O. C, Mitochondria in the cell and C O 2 exits the cell.
Label the main steps in the cellular respiration model.
A:
B:
C:
The steps in cellular respiration are ordered as follows:
A. Glucose turns into pyruvic acid.B. Energy and oxygen, O₂ enter the cell.C. In the Mitochondria, oxygen, O₂, and energy in the cell turn into water, and H₂O and CO₂ exit the cell.What is cellular respiration?Cellular respiration is the process by which large organic food molecules are broken down to produce energy in the form of ATP for the body.
Cellular respiration occurs in two ways:
Aerobic respiration - this occurs in the presence of oxygen and results in a large amount of ATP produced.Anaerobic respiration - occurs in the absence of oxygen and produces fewer ATP molecules.Learn more about cellular respiration at: https://brainly.com/question/425991
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Answer:a c a
Explanation:
Explain, in your own words, how you would use the light microscope to view a wet mount of a protist, assuming the microscope is plugged in and that the light source is on.
A light microscope is an instrument commonly used in the laboratory which makes use of light rays for viewing and enlarging smaller objects/organisms.
The wet protist is first of all put on the slide then the slide is placed on the Stage which is the flat podium where the slides containing the samples are put for viewing.
The Stage clips are then used to hold the slide containing the wet protist in proper place for a better viewing result.
The Coarse and fine focus knobs are used to adjust the stage by raising and lowering it .
Pls Mark As Brainliest Answer
Which molecule, made by the light reactions in plants, could be used by cellular respiration in some bacteria?.
Oxygen and glucose are produced during photosynthesis and are used as the precursors for cellular respiration.
Carbon dioxide, water, and ATP are produced during cellular respiration, and these substances—along with sunlight—are the precursors for photosynthesis.
Energy is the capacity to carry out a task or generate heat. The energy of the system changes as a result of the rearrangement of atoms between different substances and the rupturing or formation of chemical bonds.
When energy is discharged from the system into the environment in the form of heat, the reaction is said to be exothermic.
Cells' mitochondria are where cellular respiration takes place. Carbohydrates (raw material) are mixed with oxygen taken in from the outside environment to release the chemical energy they contain. Additionally emitted are carbon dioxide and water vapor.
Therefore, cellular respiration is a chemical reaction that produces heat.
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when an infectious disease cannot spread in a population because it lacks a significant number of susceptible hosts, the phenomenon is referred to as contact immunity herd immunity. active immunity. passive immunity.
An infectious disease cannot spread in a population because it lacks a significant number of susceptible hosts, the phenomenon is called contact immunity herd immunity.
What is herd immunity?
Herd immunity, also known as herd effect, community immunity, population immunity, or mass immunity, is an indirect kind of defense that only works against infectious illnesses. It happens when a sizable portion of a population has developed an immunity to infection, whether from prior infections or vaccinations, decreasing the risk of disease for others who do not have immunity.
When herd immunity is attained, illness progressively vanishes from a community and, if accomplished globally, may lead to zero elimination or a permanent reduction of infections.
The creation of herd immunity through vaccination has helped to reduce the prevalence of numerous illnesses.
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you are studying 12 new isolates from the human skin. their average nucleotide identity for shared orthologous genes is 97%. the isolates would most likely be
The isolates would be classified as individual strains of the same species.
The average nucleotide Identity (ANI) above 95% are considered of same species.
What is Average nucleotide identity?
Average nucleotide Identity is a method of comparing sequenced microbial genomes. It is used for prokaryotes. As, 12 new isolates from the human skin have 97% average nucleotide identity for shared orthologous genes , so they are classified as individuals strains of the same species.
Therefore if you are studying 12 new isolates from the human skin, their average nucleotide identity for shared orthologous genes is 97%, then isolates would most likely be classified as individual strains of the same species.
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Explain Phenomena in Terms of Concepts How does a magnetic field
change as you move away from a magnet? At what point does it end?
The strength of the magnetic field H and the strength of the magnetic
induction B can both be used to describe magnetic phenomena. The relationship provides the magnetization, or the magnetic moment per unit volume, or Mv. (9.80) in which 0 represents the permeability of a vacuum
How would you describe the lines of the magnetic field?Closed loops with no beginning or end are created by continuous magnetic field lines. From the north to the south pole, they travel.
Magnetic field lines are fictitious lines that are used to depict the magnetic field's direction at a particular spot.
South pole to north pole and north pole to south pole magnetic field lines are present both inside and outside the magnet, respectively.
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PLEASE I know this is simple but can you just give me the answer I need to bring my grade up in bio PLEASE I LOVE YOU
Explanation:
Its a mitochondria and it supplies energy to the cell
During pyruvate oxidation pyruvate is converted to a molecule of acetyl. Pyruvate is a 3-carbon molecule while acetyl is a 2-carbon molecule. What do you think happened to the carbon molecule that was lost?.
The lost carbon is released in the form of carbon dioxide.
The oxidation of pyruvate to acetyl CoA is a one step process requiring cofactor. The oxidation reaction involves conversion of [tex] {NAD}^{ + } [/tex] to NADH. In the step, [tex] CO_{2}[/tex]
is released.
Also, CoA-SH also enters the reaction for reaction with the molecule of pyruvate. Pyruvate dehydrogenase complex is used for catalysis of reaction. The resultant product is acetyl CoA.
The reaction is a very important intermediate step. It makes the molecule of pyruvate usable for generation of ATP. The acetyl CoA is used in the next step which is Kreb's cycle.
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A fast food restaurant wants the average number of total carbohydrates in their items to be less than 50g. How can they use formulas to know if they have met this goal?
To count there goal they can multiply the carbohydrate grams by 4. Divide this result by the total number of calories to get the percent of carbohydrates in the food.
A calorie is a unit of ways a lot strength is in a given quantity of meals, additionally known as a kcal. Regardless of whether or not the carbohydrate in meals is sugar or starch, all carbohydrates offer the frame with four energy/gram, explains Dr.
The Dietary Guidelines for Americans endorse that carbohydrates make up 45% to 65% of general every day energy. So in case you get 2,000 energy a day, among 900 and 1,three hundred energy need to be from carbohydrates. That interprets to among 225 and 325 grams of carbs a day.
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What do you think is the same characteristic/attitude of a person and your chosen pets?
Chosen pet: Dog and Cat
Answer:
gentle, caring, enthusiastic, loving
The presence of abnormally low concentrations of protein in the blood is known as.
Answer: Hyperalbuminemia
Explanation: Hyperalbuminemia, Definition - the presence of abnormally low concentrations of protein in the blood.
help
1. How might Margaret Mead have been biased by her culture and experience when she examined the culture of the Samoans?
2. Do you think any human universals appear in all cultures? Can you think of any universal taboos?
3. One of the main criticisms of Mead was that she did not use "science" in her approach to the study of Samoan people and culture. While she is also criticized for not spending enough time in Samoa to make a proper assessment, she used observation methods to come to her conclusions. Assess how effective you think observation is to the study of anthropology. In the case of Margaret Mead, do you think her observations were correct? Why or why not?
4. Why do you think Mead's own sexuality and identity were discussed in the article?
5. How can a researcher eliminate their own bias and subjectivity when they observe another culture? Won’t they always interpret what they see through the lens of their own experience and culture? Explain your thinking.
The article under reference is "Margaret Mead: Human Nature and the Power of Culture". See further explanation and the answers below.
How might Margaret Mead have been biased by her culture and experience when she examined the culture of the Samoans?It is possible that Margaret Mead was biased by her culture and experience when she examined the culture of the Samoans because:
In human nature, there are indeed universal taboos. Some of them which were corroborated by Sigmund Freud are:
Incest; and Cannibalism.It is right to test the strength of her arguments on the basis of the methods she used to carry out her research. Science ought to be practical and very factual. While Observation is one of the methods of gathering primary data, in this case, there is no way to know if the Samoans were being polite because she was a visitor and so didn't act like they would if she was not there.
Observation in science ought to be carried out in such a way that the population or sample being observed is not interfered with while the observer remains undetected.
Mead's identity and sexuality were brought into the article because it was important for the report about her own report to be objective. Although the article does not explicitly state this, the information given about Mead's sexuality gives the reader an idea of the possible elements that could have led to her being subjective if at all.
Except such research is subject to peer review, it cannot be determined with absolute certainty that some elements of subjectivity won't be involved.
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PLEASEEEE HELP :)))
hypothesize why there are many different cell types in the human body. Why might it be important that our cells are specialized for a specific function?
Answer:
read these carefully and you'll develop your answer
Explanation:
1. Explain what is meant by a specialised cell.
Specialised cells are cells designed to carry out a particular role in the body.
2. Stem cells can specialise.
2. How do stem cells become specialised?
Stem cells can divide and produce cells that have the potential to become other more specialized cell types or tissues.
3. What might happen if a stem cell does not differentiate properly?
“Many cell types once they have become completely specialised (terminally differentiated) have a limited capacity to produce new cells of the same type.”, if they don't differentiate properly, they will not be able to specialize in any field, will it have a tissue to reside in nor function.
which statement is an example of a chemical change? group of answer choices a plant converts carbon dioxide into carbohydrates. ice cubes are formed in the freezer. a tree is cut down in the forest. confetti is cut from pieces of paper. water evaporates from a lake.
An example of a chemical change: A plant converts carbon dioxide into carbohydrates. Ice cubes are formed in the freezer.
Chemical change arises when a substance combines with every other to form a new substance, known as chemical synthesis or, as an alternative, chemical decomposition into extra distinctive substances. those tactics are called chemical reactions and, in widespread, are not reversible except by using similar chemical reactions. Wikipedia
The five conditions of chemical exchange: coloration exchange, formation of a precipitate, formation of a fuel, smell trade, and temperature trade. A chemical exchange happens when one chemical substance is transformed into one or more one-of-a-kind materials, such as when iron will become rust. Chemical adjustments occur through the method of chemical reactions, and the ensuing materials have different residences because their atoms and molecules are organized otherwise.
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A plant grower has a greenhouse where she grows plants in the winter. The greenhouse is exposed to direct sunlight and often gets too hot for the plants. She paints the inside of the glass with chalky white paint, and the temperature drops to comfortable levels. Explain why this procedure works.
This procedure works why because the white paint reflects sunlight in order to prevent it from entering the greenhouse and becoming trapped as heat.
The paint reflects sunlight, which causes the inside to chill. Heat is reflected by the color white, whereas it is absorbed by the color black. You don't see something's color; instead, you see it's not that color ( if something is red, then it absorbs all colors but the color red and the red are instead reflected into your eyes). Since white is made up of all hues, chalk reflects all colors and light. Because light is a kind of heat, it also scatters heat, which causes the heat to dissipate. In order to prevent sunlight from entering the greenhouse, where it can be trapped as heat, the white paint reflects the sunlight. However, it will turn the grower's greenhouse into an oven. Plants need sunshine to develop.
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Organisms exhibit different type of adoptions as a mean of survival.What type of adoptions do the caterpillar and the plant show in this interaction?
The adaptation in this interaction of the green plant and the caterpillar is an example of structural adaptation.
What is adaptation?The term adaptation has to do with the physical or the structural or even functional changes that is seen to occur in an organism so that the organism can be able to carry out its life activities very easily. We know that there are various kinds of habitat that the organism could be able to find itself and the organism must be able to have within it, the ways that would enable it to survive the harsh conditions of that particular or given environment.
In this case, a green caterpillar feeding on a green leaf. The green color of the caterpillar is an example of a adaptation to avoid predators, while the release of bioactive chemicals by the plant to protect itself from the insect’s attack is a adaptation.
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Missing parts;
Organisms exhibit different types of adaptations as a means of survival. What type of adaptations do the caterpillar and the plant show in this interaction?
a green caterpillar feeding on a green leaf
The green color of the caterpillar is an example of a adaptation to avoid predators, while the release of bioactive chemicals by the plant to protect itself from the insect’s attack is a adaptation.