In some genes, mutations are more likely to occur in regions called hot spots, where sequences are repetitive. It is as if the molecules that guide and carry out replication become "con- fused" by short repeated sequences, much as an editor scan- ning a manuscript might miss the spelling errors in the words "hipppopotamus" and "bananana"The increased incidence of mutations in repeats has a physical basis. Within a gene, when DNA strands locally unwind to replicate in symmetrical or repeated sequences, bases located on the same strand may pair. A stretch of ATATAT might pair with TATATA elsewhere on the same strand, creating a loop that interferes with replication and repair enzymes. Errors may result.Small additions and deletions of DNA bases are more likely to occur near sequences called palindromes. These sequences read the same, in a 5′ to 3′ direction, on complementary strands. Palindromes probably increase the spontaneous mutation rate by disturbing replication.The blood disorder alpha thalassemia illustrates the confusing effect of direct repeats of an entire gene. A person who doesnt have the disorder has 4 genes that specify alpha globin chains, two next to each other on each chromosome 16. Homologs with repeated genes can misalign during meiosis when the first sequence on one chromosome lies opposite the second sequence on the homolog. Crossing over can result in a sperm or oocyte that has one or three alpha globin genes instead of the normal 2. Fertilization with a normal gamete then results in a zygote with one extra or one missing alpha globin gene. At least three dozen conditions result from this unequal crossing over, including colorblindness)

Answer:

XXXV

Explanation:

The first is provided by the Center of Veterinary Medicine of the FDA (CVM). The organisation is in charge of monitoring pet food labels to ensure compliance with the section of the Federal Regulations Code pertaining to animal food labelling (21 CFR 501).

Labeling. There are two layers of regulation for pet food labels. The current FDA standards demand accurate product identification, a net quantity declaration, the name and location of the producer or distributor, and an accurate list of all the constituents in the product, listed in order of weight from most to least.

FDA Label evaluation is the method by which our technical specialists check new or current labels against the FDA's labelling regulations. The rules for product labelling can affect a number of audiences, including patients, doctors, and pharmacists.

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In the context of redox reactions for detecting traces of blood, there are several methods that can be used. One common method is the Kastle-Meyer test, which is a color change test that detects the presence of hemoglobin in blood.

Based on the Kastle-Meyer test, the sample that likely contains blood would be the one that exhibits a color change when the reagents are added. Typically, the Kastle-Meyer test involves adding a solution containing phenolphthalein and hydrogen peroxide to the sample. If the sample contains blood, the hemoglobin in the blood reacts with the hydrogen peroxide to form a compound called hematin, which then reacts with phenolphthalein to produce a pink color.

Therefore, if a sample shows a color change to pink after the addition of the Kastle-Meyer reagents, it is likely to contain blood. This would be the sample that is positive for the presence of blood based on the redox reaction detected through the Kastle-Meyer test. It is important to note that proper laboratory procedures and controls should be followed when conducting any type of analysis, including blood detection tests, to ensure accurate and reliable results.

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QUESTIONS

Redox Reactions: Detecting Traces of Blood 1. Which sample probably contained blood? Explain.

For consistent and precise findings, the experiment process needed rigorous washing and drying of the bones. Results might be enhanced by including a control group and expanding the sample size.

The business's overall tone is defined by the control environment, which also affects how employees carry out their jobs and fulfil their control-related responsibilities. The control environment, which fosters structure and discipline, is the foundation upon which all other internal control components are created.

The management and staff of the company separate activities, custody of assets, accounting, and segregation of authority in order to maintain or establish the control environment. The control environment's most important component is the organisational structure.

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Alpha-amylase and beta-amylase are two different types of enzymes that break down complex carbohydrates.

Alpha-amylase breaks down the long chains of glucose molecules into smaller, more manageable chains, while beta-amylase breaks down these smaller chains into simple sugars.

Salivary amylase and pancreatic amylase are two different types of alpha-amylase enzymes that are found in the human body. Salivary amylase is produced in the salivary glands and helps to begin the digestion of carbohydrates in the mouth. Pancreatic amylase is produced in the pancreas and is released into the small intestine to further break down carbohydrates into simpler sugars that can be absorbed by the body.

Overall, the main difference between alpha-amylase and beta-amylase is the type of bond they break in complex carbohydrates, while the difference between salivary amylase and pancreatic amylase is their location in the body and their specific roles in carbohydrate digestion.

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The limiting factors preventing the immigration of tree species into the tundra are cold temperatures, and a short growing season.

Tundra and taiga are two types of biomes found in the northern hemisphere. The tundra is a cold and treeless biome that covers large areas of the Arctic region. The taiga, also known as the boreal forest, is a biome that covers a large part of Canada, Russia, and Scandinavia.

In the tundra, the cold temperatures prevent the roots of trees from penetrating the soil, while the short growing season limits the amount of time available for growth and reproduction. These factors make it difficult for tree species to survive and reproduce in the tundra biome. However, the taiga, a neighboring biome, has warmer temperatures and a longer growing season, allowing for the growth of many different tree species.

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From the DNA template sequence 3′-ATGCAGTAG-5', the complementary messenger RNA (mRNA) sequence is 5'-UACGUCUAC-3', the tRNA anticodon sequences are 3'-AUG CAG UAG-5', the corresponding amino acids are Methionine, Glutamine, and a STOP codon, and the terminator (nonsense) codon in the sequence is UAG.

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During glycolysis, the straightforward sugar glucose is separated to deliver energy. Phosphoglycerate kinase plays a role in a chemical reaction that changes a molecule called 1,3-diphosphoglycerate,

Which is made when glucose is broken down, into a different molecule called 3-phosphoglycerate. Phosphoglycerate kinase transforms 1,3-bisphosphoglycerate into 3-phosphoglycerate. A phosphate molecule is transferred to ADP in this step to produce one ATP molecule. The enzyme phosphoglycerate mutase transforms 3-phosphoglycerate into 2-phosphoglycerate.

The 3-position of the phospho group makes 3-phosphoglyceric acid a monophosphoglyceric acid. In metabolic pathways like glycolysis and the Calvin cycle, it serves as an intermediate. It serves as an algal metabolite and a fundamental metabolite.

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Genotypes that the two parents need to have in order to be able to produce children with all the possible abo blood types are IA IB, IA IA, IB IB, IA i, IB i.

Determining the genotype of the parents:

In order to produce children with all possible ABO blood types, both parents must have at least one copy of the A allele (IA) and one copy of the B allele (IB) or both copies of either allele. This means that parents with the following genotypes can produce children with all possible ABO blood types:

- IA IB (heterozygous for both A and B alleles)
- IA IA (homozygous for A allele)
- IB IB (homozygous for B allele)
- IA i (heterozygous for A allele and recessive i allele)
- IB i (heterozygous for B allele and recessive i allele)

Parents with genotype ii (homozygous recessive for both A and B alleles) cannot produce children with A or B blood types, only O blood type. To produce all possible ABO blood types (A, B, AB, and O) among their children, one parent should have the genotype IA i (blood group A) and the other parent should have the genotype IB i (blood group B). Alternatively, both parents can have the genotype IA IB (blood group AB).

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Serological testing can be used to test each of the following except A. cerebrospinal fluid

Serological testing is a type of medical testing that involves the use of blood serum to detect the presence of antibodies or antigens.

Among the options listed, serological testing can be used to test all except one:

A. Cerebrospinal fluid (CSF) is not usually tested using serological testing methods. Instead, other diagnostic tests, such as a lumbar puncture, are used to collect CSF and analyze its composition.

B. Blood serum is commonly tested using serological testing methods to detect the presence of antibodies or antigens related to a particular disease.

C. Skin is not usually tested using serological testing methods. Instead, other diagnostic tests, such as a skin biopsy or culture, are used to diagnose skin conditions.

D. Urine is sometimes tested using serological testing methods, particularly in cases where the infection or disease being tested for is known to affect the urinary system.

E. Saliva can also be tested using serological testing methods, particularly in cases where the infection or disease being tested for is known to affect the mouth or throat.

Therefore, the correct answer is A. cerebrospinal fluid.

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According to evolutionary psychologists, statement (b) is true of the mating patterns of men and women. Men tend to place more emphasis on the youth and physical attractiveness of their mates than women.

This is because, from an evolutionary perspective, men are biologically programmed to seek out partners who are capable of bearing healthy offspring. Physical attractiveness and youth are markers of reproductive fitness, which is why men are more likely to prioritize these traits when selecting a mate.

However, this is not to say that women are not also concerned with physical attractiveness, or that men do not value other qualities in a partner, such as intelligence or kindness. Additionally, statement (a) is also true to some extent, as men may also be concerned with whether a potential mate is willing to invest time and resources into a relationship.

Statement (c) is also partially true, as women may prioritize sexual fidelity in a partner, but this is not universally true and may vary depending on cultural and individual factors. Statement (d) is not supported by evolutionary psychology research.

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The homologous chromosomes separate into different cells without any crossover occurring. This results in the formation of haploid gametes, each with half the number of chromosomes as the original cell.

If you provide the specific genotype of the parent cell, I can help generate the possible genotypes of the gametes based on the rules of Mendelian genetics. For example, if the parent cell has the genotype AaBb, the possible gametes without any crossovers would be AB, Ab, aB, and ab, representing all the possible combinations of alleles from the original genotype.

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The philosophy of Stoicism and developments in agriculture in ancient Rome were not entirely unrelated. Stoicism was a philosophical school of thought that emphasized self-control, resilience, and acceptance of one's circumstances so the given  statement is false.

It influenced the mindset and behavior of individuals, including their approach to agriculture and other aspects of life. In ancient Rome, agriculture was a vital part of the economy and society, and various agricultural practices and technologies were developed and adopted to improve crop yields, increase food production, and ensure the stability of the empire. Stoic principles, such as self-discipline, perseverance, and adaptability, could have influenced the mindset of Roman farmers, who might have applied Stoic teachings in their approach to agriculture, such as being resilient in the face of challenges like weather fluctuations, pests, or crop failures, and accepting the uncertainties and fluctuations of agricultural production.

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True, the philosophy of stoicism and developments in agriculture in ancient Rome were unrelated. Stoicism was a philosophical school of thought that focused on personal ethics and the pursuit of wisdom and virtue, while agriculture was a practical and economic aspect of Roman society.

Stoicism is a philosophical school focused on personal ethics, self-control, and the acceptance of the natural order of things. On the other hand, agricultural developments in ancient Rome dealt with advances in farming techniques, crop production, and land management. These two concepts were separate and not directly connected.

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In assessing the health of newborns, the Apgar test identifies high-risk infants who need resuscitation.

The Apgar test is a quick assessment of a newborn's physical condition immediately after birth, based on five factors: appearance, pulse, grimace, activity, and respiration. Each factor is scored from 0 to 2, with a maximum possible score of 10.

A score of 7 or above indicates that the baby is generally healthy, while a score of less than 7 indicates that the baby may need some form of resuscitation or medical intervention. The Apgar test is typically performed one minute and five minutes after birth, and sometimes again at 10 minutes if the baby's condition is uncertain.

The Apgar test is a widely used tool in neonatal care and helps healthcare providers identify infants who need immediate medical attention. The test's rapid assessment allows medical staff to quickly identify high-risk newborns and provide timely interventions to improve their chances of survival and long-term health outcomes.

The Apgar test also provides valuable information to healthcare providers, which can be used to monitor the newborn's progress and make necessary adjustments to their care plan. Additionally, the Apgar test can provide reassurance to parents and caregivers about the health of their newborns.

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Keeping internal organs safe. Creating new blood cells. Our body is held together and supported in its mobility by the bones, muscles, and joints. The term for this is the musculoskeletal system. Hence (b) and (c) are correct.

The skeleton protects sensitive interior organs including the brain, heart, and lungs while also supporting and shaping the body. We get most of our calcium through our bones. It gives the body its structure, enables motion, produces blood cells, shields organs from damage, and stores minerals. Support, movement, defence, blood cell formation, ion storage, and endocrine regulation are the six main purposes of the human skeleton. The majority of an adult's skeleton, the body's support system, is made up of bone, also known as osseous tissue, which is a tough, thick connective tissue.

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(Select all that apply.) The skeletal system provides the body with support, aids in mobility, and is a site for muscle attachment. With what other body functions does it help?

a. blood flow

b. the protection of internal organs

c. the production of blood cells

d.  lymph circulation

(Negative Selection) Autoreactive. Cells with a T cell receptor that can bind MHC class I or II molecules with at least a weak affinity are chosen by positive selection.

This destroys any T cells that wouldn't function because they couldn't bind MHC (a process known as "death by neglect"). Family loyalty. T-cell lineage commitment in hematopoietic tissue. Multiple selection processes, such as positive selection, negative selection, and agonist selection, that take place during the formation of T cells in the thymus work together to select a functional and self-tolerant T cell repertoire. T cells must be able to recognise the antigen-MHC complex in order to be effective in fighting infections and other foreign cells.

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Whales are the only mammals except us who can pick up a song only by hearing it. Echolalia is the instant repetition of words or phrases after hearing them. Option c is Correct.

Dolphins are the only mammal known to be capable of broad and sophisticated vocal and behavioral mimicking, aside from humans. Mammals also include whales and porpoises. The ocean is home to 75 different species of dolphins, whales, and porpoises.

Sharks are fish, despite the fact that some people mistake them for mammals because of their size and the fact that certain of them can give birth to live pups. One of the earliest vertebrates (animals with a backbone) to evolve on Earth were the aquatic fish. Option c is Correct.

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If ldh was mutated or inhibited under anaerobic conditions, a likely result would be lactic acid buildup.

LDH is responsible for converting pyruvate to lactate during anaerobic respiration, and if it is not functioning properly, pyruvate cannot be converted to lactate, resulting in an accumulation of pyruvate. This excess pyruvate is then converted to lactic acid, leading to lactic acid buildup, which can be toxic to the cells. The other options listed in the answer choices are not directly related to the inhibition of LDH and are therefore less likely outcomes.
If LDH (lactate dehydrogenase) was mutated or inhibited under anaerobic conditions, a likely result is that the generation of glucose would slow due to the lack of pyruvate for the Cori cycle and gluconeogenesis. This is because LDH plays a crucial role in converting pyruvate to lactate during anaerobic glycolysis, and its inhibition would disrupt this process, leading to decreased glucose production.

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Nonkeratinized stratified squamous epithelium is a type of tissue found in the body that serves as a protective barrier against external stimuli. It is composed of multiple layers of cells that are flattened and scale-like in appearance.

Unlike keratinized epithelium, which forms a tough, water-resistant layer on the skin, nonkeratinized epithelium is not completely water-resistant. While it does provide some level of protection against water, it is not able to prevent water from penetrating through the tissue entirely. This is because the cells of nonkeratinized epithelium are not tightly packed together, and there are small gaps between them that allow water molecules to pass through.

However, nonkeratinized epithelium is still an important barrier in the body, protecting against mechanical stress, pathogens, and other environmental factors

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Correct Question:

Is nonkeratinized stratified squamous epithelium water-resistant?

No, nonkeratinized stratified squamous epithelium is not water tight. It is found in areas of the body that require some level of moisture, such as the oral cavity, esophagus, and vagina.

This type of epithelium has multiple layers of cells that are not tightly packed together, allowing for some water and other substances to pass through. However, it does provide a barrier against pathogens and other harmful substances.

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Radiation is a form of energy that can be found in various forms, including X-rays, gamma rays, and ultraviolet (UV) rays.

It has the potential to cause damage to living tissue, and can even cause cancer if a person is exposed to a large enough dose. When a pregnant woman is exposed to radiation, it can be especially concerning as any damage done to the fetus can have serious and long-lasting implications.

Radiation can potentially cause genetic mutations and birth defects, as well as increase the risk of miscarriage and stillbirth. It is important for pregnant women to avoid exposure to radiation whenever possible, and to make sure that any medical procedures that involve radiation are performed by a qualified and experienced doctor.

If a pregnant woman is exposed to radiation, she should contact her doctor immediately so that they can assess the level of risk and provide any necessary medical care.

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The total volume of blood in the body of a 76-kg man is approximately: 5.3 liters.

The total volume of blood in the human body varies depending on factors such as age, gender, and body weight. On average, an adult human body contains between 4.5 and 5.5 liters of blood. The specific amount of blood in an individual's body can be calculated by considering their body weight.

In this case, the question states that the man in question weighs 76 kg. Based on this weight, we can estimate that the total volume of blood in his body is approximately 5.3 liters. This is within the normal range for an adult human.

It's important to note that the total volume of blood in the body is distributed among various components, including the plasma and the cellular elements such as red and white blood cells and platelets. The plasma accounts for approximately 55% of the total volume of blood, while the remaining 45% is composed of cellular elements.

Maintaining a healthy blood volume is critical for overall health and well-being. Blood helps transport oxygen and nutrients to cells throughout the body, removes waste products, and supports immune function.

In cases of significant blood loss, a person may experience symptoms such as fatigue, dizziness, and rapid heartbeat, which can be life-threatening if not addressed promptly.

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Answer:

75% homo dwarf and 25 recessive

If a dwarf bull is mated to 400 dwarf cows, the expected phenotypic ratio among the living offspring would be 1:2.

The ratio among the living offspring would be 1:2 means that for every calf with normal legs, there would be two calves with shorter legs due to the presence of the heterozygous dwarf allele. However, it is important to note that any homozygous dwarf calves would not survive and would either spontaneously abort or be stillborn, so they would not contribute to the observed ratio among the living offspring.

Assuming both the bull and the cows are heterozygous (Dd) for the dwarf allele, the Punnett square will be as follows:

D | d

-----

D | DD | Dd

d | Dd | dd

The expected genotypic ratio is 1 DD : 2 Dd : 1 dd. However, the homozygous lethal condition (dd) causes spontaneous abortion or stillbirth, so only the 1 DD and 2 Dd genotypes will be seen in living offspring. Therefore, the phenotypic ratio among living offspring would be 1 normal calf (DD) : 2 dwarf calves (Dd).

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A carpel which is a female reproductive structure found in flowers is composed of a stigma, style, and ovary. Option A is the correct answer.

A carpel is composed of three main parts: the stigma, style, and ovary. The stigma is the top part of the carpel and it is sticky, designed to capture and hold pollen grains.

The style is a long, slender tube-like structure that connects the stigma to the ovary. Its main function is to provide a pathway for the pollen to reach the ovary.

The ovary is the basal part of the carpel and it contains one or more ovules. The ovules are where the female gametophyte develops and where fertilization takes place.

Together, these three parts of the carpel play a crucial role in the reproduction of flowering plants.

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The question is -

A carpel is composed of _____.

a. stigma, style, and ovary

b. petal, sepal, and stamen

c. zygote, anther, and endosperm

d. ovule, megasporocyte, and anther

e. ovary, ovule, and anther

A carpel is composed of the stigma, style, and ovary. The stigma is the part of the carpel that receives pollen, the style is the stalk that connects the stigma to the ovary, and the ovary contains the ovules which will eventually become seeds. So, a carpel is essentially the female reproductive organ of a flower.

One or more carpels are thought to make up a flower's pistils. The female reproductive organ of a flower is called a carpel, which is typically made up of the stigma, style, and sometimes an individual ovary. Ovules, which eventually give rise to egg cells, are thought to be modified leaves that are found in carpels. The entire structure, known as a pistil, can be made up of numerous carpels linked together to create a single ovary, or it can be made up of one carpel (complete with its ovary, style, and stigma). A single multi-carpellate pistil or one or more uni-carpellate pistils may represent the gynoecium. (Terms like tricarpellate (three carpels), which designate the number of carpels, are used.)

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The order of genes on the chromosome can be determined using the percent recombination values provided: between a and b is 12, between a and c is 4, and between b and c is 8 is a-c-b.

To determine the order of the genes, we need to follow these steps:

Step 1: Identify the two genes with the largest percent recombination. In this case, it's between a and b (12%).

Step 2: Place the two genes with the largest percent recombination at the ends of the chromosome. So, we have a-----b.

Step 3: Find the percent recombination between the remaining gene (c) and the two genes at the ends (a and b). We have a-c (4%) and b-c (8%).

Step 4: Compare the percent recombination values between the remaining gene and the two genes at the ends. Since a-c (4%) is smaller than b-c (8%), gene c is closer to gene a than it is to gene b.

Step 5: Place the remaining gene (c) in its appropriate position between the other two genes based on the recombination values. In this case, it would be between genes a and b, giving us the final order: a-c-b.

So, the order of the genes on the chromosome, based on the percent recombination values provided, is a-c-b.

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The oxygen hemoglobin saturation curve will not shift to the right due to carbon monoxide. (3)

All other factors mentioned - decreased pH, increased temperature, and increased 2,3-DPG - will result in a rightward shift.

The oxygen-hemoglobin saturation curve represents the relationship between the partial pressure of oxygen and the percentage of hemoglobin saturated with oxygen. A rightward shift in the curve indicates a decreased affinity of hemoglobin for oxygen, leading to oxygen being released more readily in tissues.

Factors causing a rightward shift include decreased pH (due to increased hydrogen ions), increased temperature, and increased 2,3-diphosphoglycerate (2,3-DPG).

Carbon monoxide, however, does not cause a rightward shift. Instead, it binds to hemoglobin with high affinity, forming carboxyhemoglobin and reducing the overall capacity for oxygen transport, effectively shifting the curve to the left.(3)

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Answer: just replace A with T and G with C and vice versa.

Explanation:

A. sequencing large quantities of DNA remains prohibitively expensive is the major limitation of personalized genomics as it currently exists.

Deoxyribonucleic acid (abbreviated DNA) is a substance that conveys genetic information for an organism's development and function. DNA is made up of two connected strands that spiral around each other in order to form a twisted ladder-like structure called a double helix.

Deoxyribonucleic acid (DNA) is a polymer made up of a pair of polynucleotide chains that coil over one another to form a double helix. The polymer contains genetic instructions for all known organisms and viruses' genesis, functioning, growth, and reproduction. Nucleic acids include DNA and ribonucleic acid.

The sugar in DNA nucleotides is deoxyribose bonded to a single phosphate bond (thus referred to as deoxyribonucleic acid), whereas the base might be aniline (A), cytosine (C), the amino acid guanine, or thymine (T).

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Complete question;

what is the major limitation of personalized genomics as it currently exists?

A. sequencing large quantities of DNA remains prohibitively expensive.

B. there are only a few thousand SNPs known in the human genome.

C. pharmacogenomics should be effective at reducing the incidence of adverse side effects from drugs.

D.  most diseases are influenced by a large number of genetic and non-genetic factors. DNA microarrays can be used to examine genetic variation more rapidly than sequencing.