the foramen ovale is covered by a flap that creates a check valve allowing blood to flow unidirectionally from the to the .
The foramen ovale is covered by a flap that creates a check valve allowing blood to flow unidirectionally from the right atrium to the left atrium.
Oxygen-rich blood flows to the heart over the vein that drains blood from the body to the right upper heart chamber. This vein is also termed as the inferior vena cava. The blood then travels across the foramen ovale and onto the left upper heart chamber.
In general, the foramen ovale allows blood to flow and bypass the lungs a fetus gets the oxygen it needs from the placenta, not the lungs. The foramen ovule allowing oxygenated blood to bypass the pulmonary circulation from the right atrium to the left.
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The concentration of free Ca2+ in the cytosol of an unstimulated cell is kept low compared with its concentration in both the extracellular fluid and the endoplasmic reticulum. Which of the following help to maintain this difference?
Ca2+ siphons in the ER membrane and Ca2+ siphons in the plasma membrane are the right response.
Calcium Siphons are protein pumps that move Ca2+ back into the sarcoplasmic reticulum (a changed Endoplasmic Reticulum) in skeletal muscle after every constriction. They have a place with the particle carriers protein family.
In calcium homeostasis, these siphons are essentially particle carriers situated on the cell film of every single creature cell. They help to siphon Ca2+ out of the cell to keep up with electrochemical angles across the cell membrane.
The rough and smooth endoplasmic reticulum, the smooth resembles a fine cylinder while the rough comprises ribosomes on its surface. Both the smooth and rough endoplasmic reticulum cooperate, delegate undertakings, and are the site for the creation and capacity of proteins. The smooth endoplasmic reticulum is answerable for stockpiling and lipids creation, while the rough endoplasmic reticulum is liable for the development of proteins and a few chemicals.
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If a purple-flowered, heterozygous plant were crossed with a white-flowered plant, what is the expected ratio of genotypes among the f1 offspring? suppose p is a dominant allele for a flower color and p is a recessive one.
Heterozygous Purple flower - Pp
Gametes : P and p
Recessive white flower: pp
Gametes: p
Fusion thus yields: Pp (Purple) and pp (white)
The ratio is 1:1
Hence, it is 50% purple and 50% white.
What is Cross-Pollination?
Cross pollination occurs when pollen from one plant's flower combines with pollen from another plant's flower. In nature, pollen is typically carried from one plant to another by wind and insects such as bees.
The pollen is what causes the plant to produce seeds, which will eventually grow into a new generation of the species.
The characteristics of both parent plants are typically present in first generation hybrids. However, future generations will be less consistent with their new traits.
A new species can take 5 or more generations of careful hybridization breeding to stabilize. This is why, if you take the seeds from a first generation hybrid fruit (for example, a tomato variety you like from the store) and grow them at home, you may not get the fruits you expected.
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which of the following applies to algae but not protozoans? multiple choice are eukaryotic chemoheterotrophs have a means of locomotion photosynthetic were previously classified as animals
The chloroplast is the organelle that allows some living things to engage in photosynthesis. While not present in fungus or protozoa, it is present in algae.
What role does photosynthesis play in chloroplasts?Chlorophyll, a pigment that absorbs light and gives plants their green hue, is found within the thylakoid membranes of the chloroplast. Chlorophyll absorbs energy from blue- and red-light waves and reflects green-light waves during photosynthesis, giving the plant its characteristic green color.
What serves the chloroplast?Plant development and crop productivity are supported by the energy that chloroplasts produce through photosynthesis and oxygen-release mechanisms. Therefore, chloroplasts are in charge of producing active substances such amino acids, phytohormones, nucleotides, vitamins, lipids, and secondary metabolites.
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Can urchins survive in clear water?.
Because they are marine animals, sea urchins cannot survive in freshwater. They are widespread, from the sea's surface to its depths. The species that we'll probably work with in the lab are found in intertidal or shallow subtidal zones.
In public aquariums, sea urchins are utilized as indicator species to assess the system's health. Due to their high water sensitivity, this is. When the water is contaminated, sea urchins are one of the first to exhibit indications of stress, such as dropping & falling spines.
Additionally, they have been observed consuming carrion, sponges, sea stars, mussels, sea cucumbers, and polychaete worms. Using their mouths to grip and bite, sea urchins consume food.
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streptococcus pyogenes is inoculated to a blood agar plate with a taxo a disc. you should expect to see:
After applying the disk and allowing it to incubate, you can see the zone of growth inhibition, meaning that there is no bacterial growth around the disk.
What suggests that a blood agar plate contains Streptococcus pyogenes?Blood agar plates are examined for the presence of colonies of -hemolytic bacteria in order to recognize S. pyogenes in clinical samples. S. pyogenes colonies typically have a dome-shaped, smooth or moist surface, and clear margins after 24 hours of incubation at 35-37°C.
You should anticipate seeing by the sensitivity to bacitracin if Streptococcus perogenous is inoculated to a blood agar played with a tax or a disk. Streptococcus perogenius can be distinguished from other non-group A strains, as is well known. However, due to their increased sensitivity to etc., the hemolytic streptococcus. As you can see, a plate, a guard, and some bacterial manipulation are present.
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which is not a pathogen? question 3 options: hookworm athlete's foot fungus chicken pox virus meningococcus bacterium cancer
The parasite hookworm is not regarded as a disease. Ascaris, whipworm, and hookworm are examples of helminths that are spread through soil (parasitic worms).
Organisms, which do not cause diseases are called non-pathogenic .Antibodies are highly specific for one particular antigen, and only develop in the body after previous exposure to a pathogen It is thus not regarded as inherent. A portion of the initial line of defense against diseases is skin, tears, and mucus. They aid in defending us against encroaching infections. On the skin, in your bowel, and in other parts of your body (such as your mouth as well as the stomach), there are healthy bacteria that prevent other, bad germs from taking control. Pathogens come in a variety of forms, but we'll concentrate on the four most prevalent: viruses, bacteria, fungus, and parasites. Pathogens come in a variety of forms, but we'll concentrate on the four more prevalent: virus, bacteria, fungus, and parasites.
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Damage associated with free radicals, highly unstable oxygen atoms formed during metabolism, has been mentioned as a factor in all of the following EXCEPT
Select one:
a. neurological disorders.
b. genetic disorders.
c. muscular dystrophy.
d. late-onset diabetes.genetic disorders
Damage associated with free radicals, highly unstable oxygen atoms formed during metabolism, has been not mentioned as a factor in genetic disorders.
What is metabolism?
The group of chemical processes in organisms that maintain life is known as metabolism. The three primary functions of metabolism are: converting the energy in food into energy that can be used to power cellular functions;
What is genetic disorder?A genetic disorder is a condition that is wholly or partially brought on by a deviation from the typical DNA sequence. A single gene mutation (monogenic disorder), numerous gene mutations (multifactorial inheritance disorder), a combination of gene mutations and environmental factors, or chromosome damage can all result in genetic illnesses (changes in the number or structure of entire chromosomes, the structures that carry genes)
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What is the codon for the DNA strand CGA?.
The DNA strand CGA has the codons CGA, CGG, CGU, and CGC.
What does DNA's codon code look like?Codons are units of genomic information made up of three nucleotides (trinucleotides) in DNA or RNA that code for a specific amino acid or indicate the end of protein synthesis (stop signals). Codons contain 64 distinct elements, of which three act as stop signals and 61 function as amino acid identifiers.
Is the start codon CAG?Mammalian cells can start translation using leucine utilising a particular leucyl-tRNA that decodes the codon CUG in addition to the standard Met-tRNA Met and AUG codon route. The CAG start codon is used by Candida albicans.
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Carbohydrates are organic compounds containing chemical bonds used to power cellular processes. Sources of carbohydrates include (select all that apply)Glycogen from meatsMonosaccharides from honey and fruitsStarch from grains and vegetablesDisaccharides from milk sugar, cane sugar, beet, sugar and molasses
Carbohydrates can be found in a wide range of both healthy and unhealthy meals, including bread, beans, milk, popcorn, potatoes, cookies, spaghetti, soft drinks, corn, and cherry pie.
What is the ideal carbohydrate source?Try it out now: Choose whole grain versions of high-carbohydrate items like bread, pasta, and rice when you go grocery shopping. Your intake of vital nutrients, such as fiber, vitamins, and minerals, will increase as a result.
What is the primary source of carbohydrates for humans?Cereals, such as wheat, barley, and their products, as well as pseudocereals like quinoa or amaranth, which have up to 80% carbohydrates, are the main sources of carbohydrates in human nutrition.
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What are the factors that influence premarital sex?.
Age, sex, peer relationship, peer pressure, love and affairs are the important factors that influence premarital sex.
Premarital sex defined as sexual intercourse before marriage.
Youths and adolescents are the most vulnerable group of premarital sexual behaviour.
Age, sex, relationship, peer pressure, love and affairs are the important factors that influence premarital sex.
The premarital sexual practice among the students was affected by the factors including -
the living arrangements, sexual health education, and alcohol consumption.
Premarital sex can lead to various issues including- pregnancy, abortion, damage of uterus, drop out of school and it can also affect future marriages.
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in the figure above, what letter corresponds to the light-sensitive surface of the eye that contains photoreceptors?
in the figure attached, the letter that corresponds to the light-sensitive surface of the eye that contains photoreceptors is D.
What are the photoreceptors in the human eye?Cones and rods, two different types of photoreceptors, are found in the retina. Cones are in charge of vision during the day, whereas rods are in charge of seeing at night.
Light is transformed into signals that are transmitted to the brain by specialized cells in the retina of the eye. Our night vision and color vision are both provided by photoreceptors. Rods and cones are the two different types of photoreceptor cells. Photoreceptor cells can be involved in a variety of eye issues.
The clear cornea of the eye allows light to enter, which then travels through the aqueous humor, lens, and vitreous humor before forming a picture on the retina.
Hence, The retina of the human eye creates a true, inverted image. It results from the use of a convex lens.
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What is epistasis answer?.
Epistasis is the interaction between genes that influences a phenotype.
Epistasis is a situation in genetics where the outcome of a gene mutation depends on the existence or absence of mutations in one or more additional genes, referred to as modifier genes, respectively. In other words, the impact of a mutation is influenced by the genetic context in which it arises. Therefore, epistatic mutations act differently when they occur alone compared to when they do so jointly. The original definition of epistasis was that it happens when one gene's influence is covered up by another gene's.
In 1907, the genetics field introduced the idea of epistasis, which is today applied in biochemistry, computational biology, and evolutionary biology. Interactions between genes (such as those that require mutations in gene regulators) or between genes and environmental factors cause the phenomena.
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Water is buoyant and so provides support to plants living in the water. For plants to invade land, what would be needed to help address this issue?
A. exoskeleton
B. waxy cuticles
C. rigid structures
D. photosynthesis
C. rigid structures
Rigid structures, helps the plants be held up and sustain environmental conditions
What developed in terrestrial plants to sustain and move minerals and water?The "piping system" of a plant is made up of vascular tissues. For photosynthesis, they transport water and minerals from the soil to the leaves. Additionally, they transport nutrients (sugar dissolved in water) from photosynthetic cells to other cells in the plant for storage or growth. The development of vascular tissues transformed the realm of plants.
How does the cuticle of a plant enable it to survive on land?Plants had to change over time in order to transition from aquatic to terrestrial life. Early plants developed a waxy layer called a cuticle to help retain water and stop water loss. The cuticle, however, also hinders gases' easy entry and exit from the plant.
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Which of the following describes the role of the centromere?
(A) the location at the center of the chromosome where the two sister chromatid attach
(B) the location where the spindle attaches to the chromosome during division
(C) the location where the spindle attaches to the chromosome enabling the chromosomes to move during division
(D) all of the above
Which of the following statements regarding fungi is FALSE?A) Most fungi are pathogenic for humans.B) Fungi are eukaryotic heterotrophs.C) Fungi reproduce by forming asexual or sexual spores.D) Most fungi grow well in acidic culture condition.E) Fungi tolerate low moisture conditions.
The correct answer is A : Most fungi are pathogenic for humans. Although the great majority of fungus lack pathogenic characteristics, certain species can infect people with diseases that can range from mild to fatal. In addition, a few fungal species are plant diseases that have a terrible effect on agriculture.
Only a small number of the estimated 1.5–5.0 million fungal species on Earth (O'Brien et al. 2005) are able to infect healthy individuals, and only a small number of them cause illness in humans.
Fungi have significant roles in biomedical research, manufacturing, and industrial sectors, and they have an impact on human behavior through their effects on agriculture, world health, and biodiversity. On the earth, fungi have been found in practically every type of habitat, including air, soil, fresh water, and the seas.
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Does the human genome contain 23 pairs of genes?.
The genome consists of 22 pairs of chromosomes called autosomes and the 23rd sex chromosome (XX) in females and (XY) in males.
What is human genome and how many genomes do humans have?The human genome is the complete set of human nucleic acid sequences encoded as DNA in 23 pairs of chromosomes in the cell nucleus and in small molecules of DNA found in individual mitochondria. These are usually treated separately as nuclear and mitochondrial genomes.The nuclear genome is about 3.2 billion DNA nucleotides divided into 24 linear molecules, the shortest 50 million nucleotides and the longest 260 million nucleotides, each contained in a different chromosome.What can the human genome tell us?The complete human genome facilitates the study of genetic variation between individuals or populations. Genome refers to all the genetic material of an organism, the human genome is largely the same in all humans, but a small portion of DNA differs from individual to individual.
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a(n) is an assemblage of populations of multiple species, interacting with one another within a single environment.
A community is an assemblage of populations of multiple species, interacting with one another within a single environment.
Community, also known as a biological community, is a group of interacting organisms species or populations of multiple species that share a similar habitat in ecology. A biological community is made up of things like a forest of trees and underbrush plants that is home to various animals and is anchored in bacterial and fungal-rich soil.
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When Mendel crossed homozygous tall plants with homozygous short plants the offspring were?.
When Mendel crossed homozygous tall plants with homozygous short plants the offspring were tall.
The presence of two identical alleles at a particular locus. A homozygous genotype can have two normal alleles or two alleles with the same variant.
You can have brown eyes whether you are homozygous (two brown-eyed alleles) or heterozygous (one brown and one blue allele). This differs from the blue-eyed allele, which is recessive. Blue eyes require two identical blue eye alleles.
A cross between two plants of the same species that considers the transmission of only one trait is called a monohybrid cross.
For example, a cross between a tall plants of pea and a dwarf plant of pea, considering only the height of the parents, is a monohybrid cross.
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What is artificial intelligence used for in business?.
Artificial intelligence allows you to create automated and accurate sales forecasts based on all customer interactions and past sales results.
Artificial intelligence (AI) is the cappotential of computer systems or computer-managed robots to carry out obligations generally done with the aid of using people due to the fact they require human intelligence and judgment.
Artificial intelligence (AI) allows machines to study from experience, adapt to new inputs, and carry out human-like tasks.Most of the AI examples we hear today, from chess-playing computers to self-driving automobiles rely heavily on deep learning and natural language processing.
There are many ongoing discoveries and developments, most of which fall into four categories:
Reaction machines, limited memory, theory of mind, self-aware AI.
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the tca cycle produces multiple choice atp, fad, and precursor metabolites nadh, atp, and fad. fadh2, nadh, and precursor metabolites. fadh2, adp, and nadh. precursor metabolites, nad, and fadh2.
FADH2, NADH, and precursor metabolites are produced through the TCA cycle.
After being created throughout the TCA cycle, where do NADH and FADH2 go?In the cell membrane of prokaryotes or the inner membrane of eukaryotes, NADH and FADH2 travel to the electron transport chain. The TCA cycle occurs in the mitochondria of prokaryotes and eukaryotes.
What is created throughout the TCA cycle?Acetyl CoA and oxaloacetate undergo an enzymatic aldol addition process to generate citrate at the start of the TCA cycle. By use of a dehydration-hydration process, the citrate is isomerized to produce (2R,3S)-isocitrate. The product of additional enzymatic oxidation and decarboxylation is 2-ketoglutarate.
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TRUE/FALSE. as sampling time increases, the species richness of the stream increases until all the possible species are found.
As the sampling time increases, the species richness of the stream increases until all the possible species are found. The given statement is false.
Species richness is the number of species which are present within a defined region. Species richness of a region is obtained through sampling or via a census. As, the region is defined by the observer, species richness has been further categorized into three components to account for the changes in spatial scale.
Increasing the sampling area increases the observed species richness because more individuals get included in the sample and large areas are environmentally more heterogeneous than that of small areas. Many organism of the groups have most species in the tropics, which lead to latitudinal gradients in species richness.
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What are the food safety practices?.
Keep clean, separate raw from cooked food, cook thoroughly, maintain food at safe temperatures, and use safe water and raw materials are the five basic principles for producing safe and wholesome food safety practices
According to Dr. Enrique Perez, senior advisor for PAHO/WHO on food-borne diseases and zoonoses, following these five guidelines gives consumers confidence that they are handling food securely and preventing the spread of microorganisms. They can be used in both homes and restaurants because they are straightforward and useful food safety practices.
A third of foodborne illness outbreaks are traced to food cooked and consumed at home, and a sizable fraction of all cases are brought on by bacterial contamination as a result of a few risky behaviors.
Over 200 diseases, from diarrhea to cancer, are brought on by food tainted by bacteria, viruses, parasites, or dangerous chemicals. An estimated 35 million children under the age of five in the Americas experience these illnesses each year.
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which of the following groups of symptoms are caused by hyponatremia?question 33 options:weak pulse, low blood pressure, and increased heart ratethirst, dry mucous membranes, and diarrheanausea, muscle cramps, and confusioncardiac arrhythmias, paresthesias, and acid-based imbalances
Hyponatremia is characterized by signs and symptoms such as nausea, vomiting, headache, confusion, lethargy, fatigue, loss of appetite, irritability, muscle weakness, cramps, seizures, and decreased consciousness or coma. More severe symptoms are correlated with lower plasma sodium concentrations.
Why does hyponatremia occur?A body with too much water or fluid may have low blood sodium levels. The amount of sodium appears low due to this "watering down" effect. Low blood sodium levels can also be caused by sodium loss from the body or by fluid and sodium loss occurring simultaneously.
Insufficient fluid intake or excessive water loss are common causes of this condition. Hypernatremia may also be exacerbated by certain medical conditions, such as dementia, diabetes insipidus, uncontrolled diabetes, kidney disease, and uncontrolled diabetes.
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in this graph, the red line represents the number of hares and the blue line represents the number of lynx over time. which density dependent factor is driving the population oscillation of the hares?
It has been demonstrated that oscillations are driven by density-dependent limiting variables that affect a population's per capita growth rate in food availability.
What brings about population fluctuations?Interactions between populations of at least two different species frequently result in oscillations. For instance, it has been demonstrated that oscillations are caused by predation, parasite infection, and changes in the availability of food.
What do population factors that depend on density mean?Disease, competition, and predation are examples of factors that depend on density. Population size can be correlated positively or negatively with density-dependent characteristics. These growth-restricting elements have a positive association with population size, increasing as the population grows.
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an mrna is expressed that begins with the sequence augccaggcguc. using the genetic code below, determine what peptide will be translated from this mrna.
Peptide mRNA AUGCCAGGCGUC will be translated into Methionine-Glycin-Proline-Valine.
RNA stands for ribonucleic acid which is one of the genetic materials that is made up of nucleotides. In the human body, RNA acts as a carrier of genetic information and translates it into the synthesis of various kinds of proteins.
RNA can be divided into three types:
mRNA (messenger RNA), serves to carry the genetic code (codons) from the chromosomes in the cell nucleus to the ribosomes in the cell cytoplasm.rRNA (ribosomal RNA), serves as an alignment (adapter) or polypeptide assembly machine that moves in one direction along the mRNA during protein synthesis.tRNA (transfer RNA), functions to carry amino acids to the ribosome to translate the codons of the mRNA.Learn more about RNA at https://brainly.com/question/28073947
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Membrane curvature is influenced by the differential lipid composition of the two membrane monolayers. Which factor do you think has the largest impact on the curvature of biological membranes?.
The distribution of cholesterol in the lipid bilayer's two halves. The largest impact on the curvature of biological membranes.
Cholesterol is rather frequently found in this bilayer in a "flipped" shape, with the hydroxyl group facing the membrane middle plane. Additionally, this bilayer has the lowest reorientation barrier and maximum (least negative) binding free energy among liquid phase bilayers.
The permeability-barrier qualities of the lipid bilayer are improved by the cholesterol molecules. Their hydroxyl groups are positioned near to the polar head groups of the phospholipid molecules as they are oriented in the bilayer.
There has been a lot of interest in the function of cholesterol in lipid membranes including bilayers and monolayers. By generating liquid-ordered-phase lipid rafts, cholesterol dramatically improves the order of lipid packing, reduces membrane permeability, and preserves membrane fluidity on a biophysical level.
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what was the most likely purpose of adding bovine serum albumin to the kinetics experiments in the passage? bovine serum albumin:
The reaction's co-catalyst is bovine serum albumin.
The function of bovine serum albuminBovine Serum Albumin binds to and transports between tissues and cells water, salts, fatty acids, vitamins, and hormones due to its negative charge. Bovine Serum Albumin's binding ability also makes it a potent scavenger, removing poisonous substances from the medium, including pyrogens.
In cell and microbial culture, BSA is employed as a nutrient. BSA is a chemical that is used in restriction digests to stabilize some enzymes while they break down DNA and prevent the enzyme from sticking to pipette tips, reaction tubes, and other vessels.
A component of the whey portion of cow's milk, BSA is a protein that is primarily found in the circulatory system of the cow.
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How did the study of the atom contribute to our understanding of the periodic table of the elements?.
The study of the atom contributed to our understanding of the periodic table of the elements by providing information about the structure of the atom and the arrangement of the elements.
What does the study of the atom reveal?This information revealed how the elements are organized based on their:
Atomic number (number of protons).Atomic mass (number of protons and neutrons).Electron configuration.By understanding the structure of the atom and the arrangement of the elements, scientists were able to develop the periodic table, which is a way of organizing the elements based on their atomic properties.
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a mutation in the gene encoding which of the following proteins would increase the sensitivity of the ames test to the type of spontaneous mutations produced by nitrites in the presence of strong acids? group of answer choices photolyase catalase ap endonuclease mutt uvra
During gene mutation, Vsr proteins would increase the sensitivity of the ames test to the type of spontaneous mutations produced by nitrites in the presence of strong acids.
In molecular biology, a particular change in the sequence of DNA which leads to the production of something different is called gene mutation.
Gene mutation causes permanent transformation in the sequence of DNA leading to genetic variations.
These genetic variations plays an important role in the process of change or evolution over generations.
Simply put, a mutation is the transformation in the sequence of the nucleic acid of a genome, an extrachromosomal DNA or a virus that alter the functions of the DNA.
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