The ability to extract DNA is of primary importance to studying the genetic causes of disease and for the development of diagnostics and drugs. It is also essential for carrying out forensic science, sequencing genomes, detecting bacteria and viruses in the environment and for determining paternity.
Final answer:
DNA extraction is crucial for accurately studying and manipulating genetic material, impacting research, medical diagnostics, and forensics. The process ensures the isolation of high-quality DNA and involves specific steps such as cell lysis, removal of contaminants, and DNA precipitation. The choice of DNA extraction kits can affect both quality and cost, while proper storage is key for sample integrity.
Explanation:
The importance of DNA extraction is paramount in biological sciences. It constitutes the first step in many biochemical analyses, allowing scientists to isolate genetic material from cell cultures or tissues. High-quality DNA extraction is essential for accurate quantification and can influence the outcome of research, medical diagnostics, and forensics. During DNA extraction, cells undergo lysis using detergents like sodium dodecyl sulfate, which is followed by the removal of unwanted macromolecules using proteases and DNAase-free RNAase. The DNA is then precipitated using alcohol due to its physical and chemical properties, uniquely separating it from other cellular components.
Researchers rely on various DNA extraction kits, which may affect sample quality and cost. The choice of the appropriate kit can significantly determine the integrity and utility of extracted DNA. Moreover, post-extraction, the DNA must be carefully stored at low temperatures for long-term preservation and future usage.
In summary, DNA extraction is a critical procedure that lays the foundation for many sophisticated scientific endeavors, ranging from gene expression studies and RNA analysis to the advancement of recombinant DNA technology and beyond.
Which of the following best compares the roles of the fallopian tubes and the uterus?
Eggs develop into embryos in the fallopian tubes and mature in the uterus.
Eggs are fertilized in the fallopian tubes and become implanted in the uterus.
Eggs become implanted in the fallopian tubes and travel through the uterus during birth.
Eggs are produced in the fallopian tubes and are fertilized in the uterus.
Answer:
Eggs are fertilised in the fallopian tubes and become implanted in the uterus.
Explanation:
The eggs are produced in the ovaries and from the ovaries, the eggs then travel down the tube-like structures known as fallopian tubes, that are connected to the uterus.
It is in these fallopian tubes where the sperms meet the eggs and fertilization occurs, the zygote thus formed then further travels down the fallopian tube and reaches the uterus where the implantation occurs.
Please see the attached image.
Answer:
Eggs are fertilised in the fallopian tubes and become implanted in the uterus.
Explanation:
Three chronic marijuana users—a "light" user, a "moderate" user, and a "heavy" user—stop using marijuana. before quitting, all three experienced abnormal blood flow in their brains. several weeks later, blood flow in their brains had most likely:
After stopping marijuana use, chronic users are likely to experience a normalization of brain blood flow over time, which could correspond to an improvement in cognitive functions. However, recovery may vary and research findings on the extent of the impact and reversal are not entirely conclusive.
Effects of Marijuana on Brain Function and Blood Flow
When considering the implications of chronic marijuana use on brain function, it's important to acknowledge the complexity and inconsistency existing within research findings. Chronic marijuana use has been associated with alterations in brain blood flow, but the direct connection to cognitive impairment remains unclear, partly due to potential confounding factors like other drug use or withdrawal symptoms. The difficulty in detecting the subtle effects that marijuana may have on the brain with current techniques complicates the establishment of a clear relationship between marijuana use and changes in blood flow and function.
However, once chronic users such as a "light", "moderate", or "heavy" user cease consumption, the brain begins to undergo changes. Studies indicate that the abnormalities in blood flow observed in chronic users are likely to improve over time after cessation, which could signify a partial or full reversal of any chronic marijuana-induced alterations. This improvement aligns with the understanding that marijuana is generally less harmful to health compared to substances like tobacco and alcohol. Nonetheless, the exact rate and extent of normalization in brain blood flow can vary based on the level of prior usage and individual differences in physiology.
Ultimately, while marijuana has been reported to be non-physiologically addictive and is considered benign compared to other substances, the effects on chronic users' brains post-cessation are expected to trend towards a normalization of blood flow and potentially an improvement in cognitive functions. However, these expectations must be viewed cautiously, given the complex nature of neuroimaging and its interpretation in the context of marijuana use.
What happens when eggs get older during storage?
a.the color of egg yolk changes
b.the size of aircell increases
c.egg white becomes thinner
d.both b and c are correct?
It’s D: it becomes thinner and increases the size of aircells
What are three factors that affect the rate at which photosynthesis occurs
Answer: The main factors affecting rate of photosynthesis are light intensity, carbon dioxide concentration and temperature.
Explanation:
"The correct answer is that three factors that affect the rate at which photosynthesis occurs are light intensity, carbon dioxide concentration, and temperature.
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy in the form of glucose. This process is crucial for life on Earth as it provides the oxygen and organic molecules necessary for the survival of most organisms. The rate of photosynthesis can be influenced by several factors, among which the following three are key:
1. Light Intensity: Photosynthesis requires light to drive the reaction. At low light intensities, the rate of photosynthesis increases as the light intensity increases. However, once the light intensity reaches a certain threshold, the rate plateaus because other factors become limiting. This point is known as the light saturation point.
2. Carbon Dioxide Concentration: Carbon dioxide (CO2) is a substrate in the photosynthesis reaction. An increase in CO2 concentration typically leads to an increase in the rate of photosynthesis up to a certain point. Beyond this point, the enzyme responsible for fixing CO2 (RuBisCO) becomes saturated, and additional CO2 does not increase the rate of photosynthesis.
3. Temperature: Temperature affects the rate of photosynthesis by influencing the activity of enzymes involved in the process. As temperature increases, the rate of photosynthesis generally increases as well, up to a certain optimal temperature. Beyond this optimal temperature, enzymes may denature, and the rate of photosynthesis will decrease.
Other factors that can also affect the rate of photosynthesis include water availability, the presence of pollutants, and the health of the plant. However, light intensity, carbon dioxide concentration, and temperature are typically considered the primary factors that have the most significant impact on the rate of photosynthesis."
An endospore may survive a drought because it is protected by a
a. hollow bridge.b. thick wall.c. plasma membrane.d. plasmid replication.
Answer:
b. thick wall.
Explanation:
Endospore is a structure formed by some bacteria, that help them survive unfavourable conditions (e.g. lack of nutrients). This survival strategy of some bacteria (usually Gram+ bacteria) help them stay dormant for a while, until stressful conditions stop. A thick wall composed of many layers (exosporium, spore coat, spore cortex, core wall) of the endospore is what provides resistance to different stressful chemical and physical factors such as UV radiation, temperature, chemical damage etc.
An endospore can survive a drought due to a thick protective wall it forms around itself. This protective layer helps it withstand extreme conditions such as dryness, heat, and cold.
Explanation:An endospore is a tough, dormant structure formed within certain bacteria that allows them to survive in harsh conditions such as a drought. The major contributing factor to this resilience is a thick wall that the endospore forms around itself. This provides resistance to extreme conditions including desiccation (extreme dryness), heat, cold, radiation, and certain disinfectants. Unlike a plasma membrane, hollow bridge, or plasmid replication, it's this thick shock-resistant layer which grants the endospore this durability. In essence, it is built to endure extremely adverse situations.
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Which group of macromolecules includes enzymes?
A.) lipids
B.) carbohydrates
C.)nucleic acids
D.)proteins
Answer: D. Proteins
Background Info: (from Wikipedia)
A biomolecule or biological molecule is a loosely used term for molecules and ions that are present in organisms, essential to some typically biological process such as cell division, morphogenesis, or development.[1] Biomolecules include large macromolecules (or polyanions) such as proteins, carbohydrates, lipids, and nucleic acids, as well as small molecules such as primary metabolites, secondary metabolites, and natural products. A more general name for this class of material is biological materials. Biomolecules are usually endogenous but may also be exogenous. For example, pharmaceutical drugs may be natural products or semisynthetic (biopharmaceuticals) or they may be totally synthetic.
Enzymes, which are catalysts for biochemical reactions, fall into the protein group of macromolecules. They are comprised of amino acid chains.
Explanation:The group of macromolecules that includes enzymes is proteins. Enzymes are specific types of proteins that act as catalysts in various biological functions.
They speed up the rate of chemical reactions within cells, making them crucial for maintaining life. As proteins, enzymes are composed of amino acid chains.
The other options, lipids, carbohydrates, and nucleic acids, are different types of macromolecules that serve various functions in cells but do not include enzymes.
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Which of the following does not influence the time necessary for a nerve impulse to be transmitted?
a. length of the axon
b. presence or absence of a myelin sheath
c. diameter of the axon
d. presence or absence of nodes
e. whether or not the impulse begins in the CNS
Answer:
e. whether or not the impulse begins in the CNS
Explanation:
Nerve impulse is action potential movement through the axon. Nerve impulse propagation has its velocity (speed at which nerve impulse travels down the axon) which depends on many factors. For example, myelination increases the conduction velocity. Also, the larger the diameter of an axon, the higher the velocity is. Nodes of Ranvier present on the axons, and myelin sheath between the nodes act as a good electrical insulator which also increases the velocity.
Whether or not the im_pulse begins in the C_NS does not influence the time necessary for a nerve impulse to be transmitted.
What is the C_NS?The Central Nervous system (C_NS) refers to the organism system used by the body to receive and transmit signals from the environment.
The central nervous system is composed of cells called neurons, which contain prolongations called axons.During a nervous stimulus, the axons serve to communicate different nerve cells.In conclusion, whether or not the impulse begins in the C_NS does not influence the time necessary for a nerve impulse to be transmitted.
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What are two main sources of genetic variation?
Answer:
Mutations and gene recombination
Explanation:
Mutations are changes in DNA sequence that can create genetic variation within the population and thus are the ultimate source of new alleles . Mutations are important for evolution because of their ability to form a new genetic variant (allele) that can be spread to the offspring. If a new variant of a trait formed by a mutation is advantageous and helps the organism to survive and reproduce, it is going to be favourable by natural selection. That variation will more likely be passed to the next generation and remain over time.
Genetic recombination is a process that occurs during meiosis between homologous chromosomes and it involves exchange of genetic material between them. As a result, offspring inherits reshuffled alleles different than their parents.
Another sources of genetic variation are random mating and random fertilization.
The main sources of genetic variation are mutations and sexual reproduction. Mutations are changes in DNA that can have various effects on an organism's phenotype and fitness. Sexual reproduction results in the creation of unique genotypes and phenotypes through the combination of alleles from two parents.
Explanation:Genetic diversity in a population comes from two main mechanisms: mutation and sexual reproduction. Mutation, a change in DNA, is the ultimate source of new alleles, or new genetic variation in any population. The genetic changes caused by mutation can have one of three outcomes on the phenotype. A mutation can affect the phenotype of the organism in a way that gives it reduced fitness—lower likelihood of survival or fewer offspring. Alternatively, a mutation may produce a phenotype with a beneficial effect on fitness. And, many mutations will also have no effect on the fitness of the phenotype; these are called neutral mutations. Mutations may also have a whole range of effect sizes on the fitness of the organism that expresses them in their phenotype, from a small effect to a great effect.
Sexual reproduction also leads to genetic diversity: when two parents reproduce, unique combinations of alleles assemble to produce the unique genotypes and thus phenotypes in each of the offspring.
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At the doctor’s office, the doctor drains the abscess and takes a sample for culturing. She also prescribes some broad-spectrum antibiotics to treat the obvious infection. A couple days later, the doctor tells Sam that his wound contained a number of bacteria including Pasteurella multocida. When the dog bit Sam’s arm P. multocida entered the wound and started to establish an infection. In order to do so, the bacteria have to grow, which requires energy. One of the most common energy sources used by bacteria is glucose. Why is glucose such a good source of energy for bacteria?
Because it contains sugars
Final answer:
Glucose is an ideal energy source for bacteria because it is a monosaccharide that can be easily and efficiently metabolized through glycolysis to release energy needed for bacterial growth and function.
Explanation:
Glucose is such a good source of energy for bacteria like Pasteurella multocida because it is a simple sugar that can be easily metabolized during the process of glycolysis to release energy in the form of ATP (adenosine triphosphate). Bacteria use this energy to perform essential functions like reproduction, movement, and to synthesize necessary compounds. Glycolysis is an efficient pathway for energy extraction, and because glucose is a monosaccharide, it requires relatively little energy to break down compared to more complex carbohydrates. This makes it an ideal energy source for bacteria to grow and establish infections like the one experienced by Sam.
The activation of receptor tyrosine kinases is characterized by _____.
Answer:
dimerization and phosphorylation
Explanation:
Protein kinase receptors are simply saying receptors with associated kinases (usually tyrosine kinases).
Protein kinases are enzymes that have the ability to modulate other enzymes (or some other proteins) by adding the phosphate group. This is known as phosphorilation process. As a result of structural change, protein can change its activity (phosphorilation usually increase the activity).
Such receptors are involved in a many processes within an organism that are important for the cellular growth, differentiation, metabolism .
The activation of receptor tyrosine kinases involves dimerization, autophosphorylation of tyrosine residues, and a downstream cellular response. Afterwards, a phosphatase enzyme deactivates the signal to terminate the process.
Explanation:The activation of receptor tyrosine kinases is characterized by the binding of a signaling molecule to the extracellular domain, causing the receptor to dimerize. This dimerization enables tyrosine residues on the intracellular domain of the receptor to be autophosphorylated, initiating a downstream cellular response. Once the signal is completed, a phosphatase enzyme deactivates the signal by removing the phosphates from the phosphotyrosine residues. This is a critical process in various cellular activities like metabolism, protein expression, and cell division.
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The characteristic of development that says that change does not always occur in a straight line is:
Answer:
multidirectional.
The activation of receptor tyrosine kinases is characterized by A) channel protein shape change. B) dimerization and phosphorylation. C) a phosphorylation cascade. D) dimerization and IP3 binding. E) GTP hydrolysis
Answer:
B) dimerization and phosphorylation
Explanation:
Protein kinase receptors are simply saying receptors with associated kinases (usually tyrosine kinases).
Protein kinases are enzymes that have the ability to modulate other enzymes (or some other proteins) by adding the phosphate group. This is known as phosphorilation process. As a result of structural change, protein can change its activity (phosphorilation usually increase the activity).
Such receptors are involved in a many processes within an organism that are important for the cellular growth, differentiation, metabolism.
The activation of receptor tyrosine kinases involves dimerization, where two similar receptors bind together, followed by phosphorylation, which activates a downstream cellular response. A phosphatase enzyme eventually terminates this signal.
Explanation:The activation of receptor tyrosine kinases is characterized predominantly by dimerization and phosphorylation. Initially, a signaling molecule binds to the extracellular domain of the receptor which leads to its dimerization i.e., the joining of two receptor molecules. This allows their intracellular domains to come nearer and activate each other.
Following dimerization, the receptors undergo phosphorylation. Each receptor, within the dimer, catalyzes the addition of a phosphate group to tyrosine residues on the intracellular domain of the other receptor in the dimer. This process is referred to as 'autophosphorylation'. Autophosphorylation triggers a downstream cellular response which could involve various processes such as modifying cell metabolism, protein expression, or cell division. Lastly, a phosphatase enzyme terminates the signal by removing the phosphate groups from the phosphotyrosine residues.
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The _______ model hypothesizes that genetic vulnerability interacts with environmental factors to stimulate asthmatic reactions.
a. hardiness
b. hierarchy of needs
c. diathesis-stress
d. allergy
The correct answer is C
The. diathesis-stress model hypothesizes that genetic vulnerability interacts with environmental factors to stimulate asthmatic reactions.
What is diathesis-stress in psychology?The stress model assumes that mental illness results from the interaction between inherent vulnerabilities and environmental stressors. In Psychopathology
, such interactions between psychopathology and environmental factors are associated with stressful conditions in which mental and physical disorders, from genetic or biological predisposition, play a facilitating or facilitating role. It is proved by the theory that it develops into the disease (diabetes). Stress is Also known as the stress hypothesis (or paradigm or theory).
On the other hand, depending on the living environment, it may represent both predisposition and stress. For example, a child with a parent who has a mental illness may be genetically vulnerable to the illness and may be under stress due to the parent's condition.
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Does natural selection affect populations or individuals?
Answer:
Humans can't negatively impact ecosystems, because species will just evolve what they need to survive. Natural selection acts for the good of the species. ... Natural selection is about survival of the very fittest individuals in a population. Natural selection produces organisms perfectly suited to their environments.
Explanation:
Based on this information, which alternative energy source should the community consider investing in?
Answer:
Solar Energy
Apex
A worm would stand a poor chance of being fossilized because ________.
Answer:
Explanation:
because it has no bones
A worm has a low likelihood of fossilization due to its soft body structure and its living habitat which doesn't favor the fossilization process.
Explanation:A worm would stand a poor chance of being fossilized primarily for biological and environmental reasons. Worms, like many other soft-bodied creatures, are less likely to become fossilized because they lack hard parts such as bones, shells, or teeth which are most typically preserved in the fossil record. In addition, worms live in environments which typically do not lend themselves well to the fossilization process.
For fossilization to occur, an organism's remains usually need to be covered by sediment or other material soon after death to prevent decay and scattering by scavengers. A worm's habitat in the soil doesn't often provide these conditions, decreasing its chances of fossilization.
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What is suggested by the similarity of early embryos of different species of vertebrates?
Answer:
It shows their evolutionary history and their possible common ancestor.
Explanation:
Similarity of early embryos of different species is a phenomenon observed by many scientist such as Karl von Baer, Charles Darwin and Ernst Haeckel.
Karl von Baer even formulated the law of embryonic development. He explained that there is a certain embryonic form, basic form, which is similar in different species. After this stage (basic form) each species develops independent-there is a branching pattern of further development.
So, according to von Baer development goes " from the most general forms the less general".
baby sea turtles hatch underground automatically did upward towards the sky and skirts what is the waves this is an example of _______behavior
Answer:
maybe D
Explanation:
A bird species known as the cattle egret is often found near farms in wet areas. The bird waits, sometimes even perched on a cow's back, until the cow kicks up a frog or fish while it walks. Then, the bird strikes and eats the exposed prey. This is an example of what kind of feeding relationship? A. Parasitic B. Mutualistic C. Herbivorous D. Detritus
Answer:
mutualistic
Explanation:
the egeret is dependent on the cow to kick up the frogs or fish
Answer:
B. Mutualistic
Explanation:
Cattle egret and grazing cattle exhibit close association. Egrets always forage close to the grazing cattle since the cattle stir up the vegetation while moving. This flushes out the insects from the vegetation and egrets feed on them. Without a grazing cattle, egrets find it difficult to locate and catch the insects. Since egrets are benefited from the association, it is mutualism.
Pick the correct match.
cellulose:
phospholipids and protein:
gives strength to cell:
selective membrane:
Answer:
Answer:
Cellulose : cell wall
Phospholipids and protein : cell wall
Gives strength to cell : cell wall
Selective membrane : Plasma membrane
Explanation:
The correct matches are Cellulose: cell wall, Phospholipids and protein: plasma membrane, Gives strength to cell: cell wall, Selective membrane: plasma membrane. Cellulose contributes to the cell wall's strength, while phospholipids and proteins are crucial for the plasma membrane's function.
To answer the student's question:
Cellulose is associated with the cell wall.Phospholipids and proteins are key components of the plasma membrane.The cell wall gives strength to the cell.The plasma membrane acts as a selective membrane.Therefore, the correct matches are:
Cellulose: cell wall or plasma membrane — answer a or dPhospholipids and protein: plasma membrane or cell wall — answer b or cGives strength to cell: cell wall or plasma membrane — answer a or dSelective membrane: plasma membrane or cell wall — answer b or cFor clarification, cellulose is a major component of the cell wall in plants, providing rigidity and support. Phospholipids form the bilayer of the plasma membrane and, together with proteins, are essential for its function and selective permeability.
The correct question is:
Pick the correct match.
1. Cellulose:
2. Phospholipids and protein:
3. Gives strength to cell:
4. Selective membrane:
a. cell wall or plasma membrane
b. plasma membrane or cell wall
c. plasma membrane or cell wall
d. cell wall or plasma membrane
When there is not enough oxygen, what is glucose converted to in animal cells?
Answer:
In anaerobic respiration, which occurs during fermentation, less energy is extracted — only two ATP molecules per glucose molecule — because the products of the process, such as ethanol or lactic acid, contain more energy than does carbon dioxide, the product of aerobic respiration
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Final answer:
In the absence of adequate oxygen, glucose is converted to lactate in animal cells through lactic acid fermentation to continue ATP production.
Explanation:
When there is not enough oxygen, glucose is converted to lactate in animal cells through a process known as lactic acid fermentation. This process occurs during anaerobic conditions, where the pyruvate produced by glycolysis is reduced to lactate rather than being transported into the mitochondria for further oxidation. The conversion of pyruvate to lactate also regenerates NAD+, which is necessary for glycolysis to continue producing ATP when oxygen is scarce. This is particularly important in cells like red blood cells that lack mitochondria or under strenuous conditions where the oxygen supply is limited.
Which value is a good estimate of the railroad’s average elevation?
450
480
500
550
Answer:
450
Explanation:
Hence, 450 is a good estimate of the railroad’s average elevation.
Railroad’s average elevation
A railroad grade pocket watch exists absolutely a watch that was approved by a particular railroad organization for utilize by conductors on their rail.
Elevation stands distance above sea level. Elevations exist usually measured in meters or feet. They can be displayed on maps by contour lines, which connect points with the same elevation; by bands of color; or by numbers presenting the exact elevations of particular points on the Earth's surface.
Hence, 450 is a good estimate of the railroad’s average elevation.
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Most nutrient absorption happens in which structure within the digestive system? A. Duodenum B. Stomach C. Large intestine D. Chyme
Answer:
A. Duodenum
Explanation:
Duodenum is the first part of the small intestine which receives bile juice, pancreatic and intestinal digestive juices. The digestive enzymes present in these juices completes the process of digestion.
The lining of the duodenum has numerous finger-like projections called intestinal villi. The villi are specialized to absorb the digested food by providing increased surface area for the process of digestion. Hence, among the given options, the absorption of digested food occurs in duodenum.
Most nutrient absorption happens in A. Duodenum
Explanation:The duodenum is the primary site for nutrient absorption within the digestive system. It is the first part of the small intestine, located immediately after the stomach. The chyme, a mixture of partially digested food and gastric juices, enters the duodenum from the stomach.
Here, various digestive enzymes from the pancreas and bile from the liver are introduced to break down carbohydrates, proteins, and fats. These enzymes help in the absorption of nutrients, including glucose, amino acids, and fatty acids, into the bloodstream. While some nutrient absorption occurs in other parts of the small intestine, the duodenum plays a pivotal role in this process.
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How does carbon enter the biotic part of the ecosystem
Answer:
Photosynthesis
Explanation:
Photosynthesis can be defined as the process in which the plant and other organism convert light energy into chemical energy which can further be used to make organic compounds. Similarly, it is a process that removes carbon dioxide from the atmosphere and then uses it to make organic compounds.
Answer:
Photosynthesis
Explanation:
When plants die, their carbon compounds are converted into carbon dioxide by the action of saprophytic bacteria and fungi. The carbon dioxide is released back to the atmosphere. If dead bodies of plants are buried in highly acidic or anaerobic conditions, they cannot be acted upon by saprophytes. Instead they are partially decomposed by anaerobic bacteria and accumulate forming peat. Heat and pressure build up in the peat converting it to coal and natural gas that can be combusted to release carbon.
Which of these terms best describes an area of skin that is innervated by a particular spinal nerve?
Answer: Dermatomes are similar; however, a dermatome only specifies the area served by a spinal nerve. In some cases, the dermatome is less specific (when a spinal nerve is the source for more than one cutaneous nerve), and in other cases it is more specific (when a cutaneous nerve is derived from multiple spinal nerves.)
Explanation:
A group of students form a Healthy Earth club at their school. Their goal is to limit their school’s impact on human-led climate change. They brainstormed a list of actions they can take to meet this goal.
Answer:
Meet goals: Buy disposable plates, Recycle used paper, Post reminders to teachers, Encourage parents to walk, Start a compose bin
Doesn't meet goals: Propose that the school cuts down trees
This question is about a group of students forming a Healthy Earth club to limit their school's impact on climate change, and the actions they can take to meet this goal.
Explanation:This question is related to the subject of Science and is appropriate for Middle School students. The student is asking about a group of students who formed a Healthy Earth club at their school to limit their school's impact on human-led climate change. The students brainstormed a list of actions they can take to meet this goal. This topic relates to environmental science and the study of climate change and its effects on Earth.
Leia um parágrafo que aponta o agente causador da gripe e cita um exemplo de tr?s grandes pandemias dessa doença?
Answer:
Eu preciso saber o que a passagem diz para que eu possa Responda
Explanation:
A condition in which one gene pair masks the expression of a nonallelic gene pair is called ________.
Answer:
The condition is called EPISTASIS.
Explanation:
Epistasis is said to occur when two or more distinct genes contribute non-additively to the same phenotype. This occurs because one of the genes involve dominate or modify the other gene. There are various examples of genetic epistasis in nature. For instance, in a particular dog specie (Labrador) two genes control the color of the specie giving rise to three different coat colours in the dogs.
Epistasis is a condition where the effect of one gene pair suppresses or masks the expression of another nonallelic gene pair. This is different from dominance which is a relationship between two alleles of the same gene. Epistasis can be showcased in an example where the albinism gene in mammals masks the gene for black and brown color.
Explanation:The condition in which one gene pair hides or masks the expression of a nonallelic gene pair is called Epistasis. This is an important concept in genetics, and is often contrasted with dominance, another gene interaction. While dominance is a relationship between two versions (alleles) of the same gene, epistasis occurs when the effects of one gene's alleles hide the effects of a different gene's alleles. For example, a gene for albinism could be epistatic to the gene that codes for the black and brown color in mammals. Even if the gene for color codes for brown, if the first gene codes for albinism, the mammal will be albino.
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What is a B cell?
A.
A lymphocyte that makes antibodies
B.
A pathogen that makes antigens
C.
An antigen that makes antibodies
D.
A virus that makes bacteria
A lymphocyte that makes antibodies
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Joe makes a daily protein shake and includes a raw egg in it for extra protein. he is at risk for which foodborne illness
Answer:
Salmonella
it is a germ inside an egg that makes you sick