Answer:
a sloth can fall approx. 100 fett without hurting itsefl
a researcher claims to have discovered a mutant form of twist that has lost the ability to induce emt. which experiment would most effectively test this claim?
The most effectively test would be a genetic analysis which basically identify the difference between the mutant form of twist and also the normal wild type.
Genetic analysis to identify the difference between the mutant form of twist and the normal wild type. This could be done by sequencing the twist gene from the mutant and comparing the sequence to the wild type sequence. However, also it would give substantiation that a mutation has passed and that the mutant form of twist has indeed lost its capability to induce EMT,
If the mutant sequence has a different nucleotide than the wild type. This could be further tested by using molecular ways similar as point directed mutagenesis to produce the mutant form of twist in a wild type strain, and also performing an EMT assay to show that the mutant twist no longer induces EMT.
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the flow of genetic information in a cell goes from
a. DNA to RNA to glucose b. Protein to RNA to DNA c. DNA to lipid to protein d. DNA to RNA to protein
Thus, during expression of a protein-coding gene, information flows from DNA → RNA → protein. This directional flow of information is known as the central dogma of molecular biology.
The Cenozoic era would last how many days and When would the first humans appear on a one year calendar?
The Cenozoic era would last only about 65 million years. The first humans appear on a one-year calendar on December 31st.
What is the Cenozoic era?The last 66 million years of Earth's history are represented by the Cenozoic, the current geological epoch.
It is distinguished by the predominance of mammals, birds, and flowering plants, a chilly, dry environment, and the arrangement of the continents as they are now.
Near the conclusion of the Pleistocene epoch, or between 300,000 and 200,000 years ago, during the Cenozoic era, Quaternary period, Homo sapiens first emerged.
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external obliques, internal obliques, transversus abdominis, and rectus abdominis are abdominal muscles that will perform the following action when both sides are contracted
They will perform the following actions when both sides are an extension of the torso compression/flexion of the torso. Therefore, option B is correct.
What are abdominal muscles?On the front of the body, between the ribs and the pelvis, are the abdominal muscles. By controlling internal abdominal pressure, the abdominal muscles support the trunk, provide movement, and retain organs in place.
External obliques, internal obliques, transversus abdominis, and rectus abdominis are abdominal muscles that will perform the following action when both sides are extensions of the torso compression/flexion of the torso. Therefore, option B is correct.
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Your question is incomplete, most probably your question is:
External obliques, internal obliques, transversus abdominis, and rectus abdominus are abdominal muscles that will perform the following action when both sides are
A. contracted.
B. extension of the torso compression/flexion of the torso
C. rotation of the torso
D. lateral flexion of the torso
using classification terminology, what type of tissue is shown in the image indicated by the bracket?
A microscopic view of animal tissue is shown. Epithelial tissue is the kind of animal tissue that is depicted in the picture. The right answer is A.
Epithelial tissue, which coats internal organs and cavities and gives birth to glands, covers the surface of the body. The cells in epithelial tissue often have regular shapes and sizes and frequently follow a recognizable pattern. The tissue in the picture appears to be made up of cells that are layered, evenly shaped, sized, and arranged in a single layer, similar to epithelial tissue. As a result, choice A, "Epithelial tissue," is correct. In order to improve the retrieval, access, dissemination, and dissemination of institutional information in the field of health, it seeks to standardize and enhance terminology, concepts, and acronyms. Clinical classifications, vocabularies, and terminologies are standardized collections of ideas (and their synonyms) for registering health-related occurrences and interventions in sufficient detail to facilitate the delivery of healthcare.
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the affinity of hemoglobin for oxygengroup of answer choicesis increased in response to metabolic alkalosis.
The affinity of hemoglobin for oxygen is increased in response to metabolic alkalosis.
The strength by which oxygen binds to hemoglobin is аffected by severаl fаctors аnd cаn be represented аs а shift to the left or right in the oxygen dissociаtion curve. А rightwаrd shift of the curve indicаtes thаt hemoglobin hаs а decreаsed аffinity for oxygen, thus, oxygen аctively unloаds. А shift to the left indicаtes increаsed hemoglobin аffinity for oxygen аnd аn increаsed reluctаnce to releаse oxygen. Severаl physiologic fаctors аre responsible for shifting the curve left or right, such аs pH, cаrbon dioxide ([tex]CO_{2}[/tex]), temperаture, аnd 2,3-Disphosphoglycerаte.
Your question is incomplete, but most probably your full question was
The affinity of hemoglobin for oxygen
A. is greater than the affinity for carbon monoxide.
B. is increased in methemoglobin.
C. decreases as the height above sea level increases.
D. is increased in response to metabolic alkalosis.
Thus, the correct option is D.
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1. Imagine you have collected data on the temperature and dissolved oxygen (mg/L) in a eutrophic lake over 5 years. You want to see if dissolved oxygen varies with temperature in this lake. What statistical test would you do? Explain why you chose this test.
Pearson's correlation test to observe changes dissolved oxygen and temperature.
I would perform a Pearson's correlation test to see if there is a relationship between dissolved oxygen and temperature in the eutrophic lake. This test measures the linear relationship between two continuous variables. In this case, temperature and dissolved oxygen are both continuous variables, and I want to see if a change in temperature results in a corresponding change in dissolved oxygen. Pearson's correlation test will give me a correlation coefficient that indicates the strength and direction of the relationship between the two variables.
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What is the most important way to slow bacterial growth in tcs food?
The temperature danger zone must be passed by TCS food as rapidly as feasible. Be sure to keep hot food hot and cold food cold. To determine the temperature of food inside, always use a thermometer.
The risk of dangerous bacterial development and toxin generation in TCS food is reduced by using temperature controls. Controlling time and temperature is the most crucial step in avoiding bacteria-caused foodborne illnesses. The pathogen that needs to be controlled must be treated with an appropriate antibiotic treatment. The best technique to inhibit microbial development is through sterilisation and disinfection using heat. To kill bacteria, water must be heated to a minimum of 140 degrees Fahrenheit.
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which actions include preparing a sterile field? a. opening sterile packages and picking up sterile items that fall off the sterile field. b. preparing a sterile drape and exposing it to microorganisms.
The actions that should be included when preparing a sterile field should NOT include things like exposing the sterile items to microorganisms and picking up items that fall outside the sterile field. Therefore, both options are false.
A sterile field is an area that is created by placing sterile (surgical) drapes around a patient's surgical site. There would be stands that hold sterile instruments and other needed items during surgery. A sterile field is created to reduce the number of microbes that are present around the area, reducing the risk of diseases and infections.
The sterile field must be established as close as possible to the time of the procedure. It also must not be left unattended. You are not allowed to sneeze, cough, laugh, or even talk over the sterile field.
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a list of environmental factors that may affect the rate of gas production
Answer:
Temperature, light intensity, and the availability of nutrients such as carbondioxide are the environmental factors.
Explanation:
5. When crossed with the genotype AaBb, which genotype would result
in a 50% chance of producing offspring with the alleles AA?
When crossed with genotype AaBb, genotype that would result in 50% chance of producing offspring with alleles AA is : genotype AaBb.
Which genotype would result in 50% chance of producing offspring with alleles AA?If two individuals, one with genotype AaBb and another with genotype AaBb, cross, the offspring produced will have a 50% chance of having the alleles AA (homozygous dominant). This is because each parent contributes one allele for each gene to the offspring, and there is an equal probability of either the dominant or recessive allele being passed on.
In this cross, half of the offspring will have the dominant allele A from both parents, while the other half will have the recessive allele a from one parent and the dominant allele A from the other parent. Thus, the genotype of the offspring will be Aa in 50% of the cases, and AA in the other 50% of the cases.
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The ________ separates the thoracic cavity from the abdominal cavity, and its contraction causes the process of inspiration.
external intercostals
obliques
diaphragm
internal intercostal
The diaphragm separates the thoracic cavity from the abdominal cavity, and its contraction causes the process of inspiration.
However, certain structures can flow through the diaphragm's three holes, which divide the abdominal and thoracic cavities: The vena caval foramen is the location where the inferior vena cava crosses the diaphragm. In the central tendon, at the level of T8, is where this opening is situated.
The muscle dividing the thoracic (chest) cavity from the belly is called the diaphragm. The primary muscle of breathing is the diaphragm. During inspiration, while one is breathing air in, the diaphragm muscle contracts and expands the lungs.
Air entering and leaving the lungs is assisted by the diaphragm. The diaphragm contracts during inspiration, causing the pulmonary volume to increase and the intrapulmonary pressure to drop to below atmospheric pressure.
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cells of this tissue may absorb and/or secrete substances
The tissue wherein the cells may absorb and/or secrete substance is called epithelial tissue.
Epithelial tissue is a type of tissue that covers the surface of the body, forms glands, and lines internal organs. It is composed of closely packed cells that are arranged in one or more layers, with little intercellular material.
The cells of epithelial tissue are highly specialized for functions such as protection, absorption, secretion, and sensory reception.
1. Protection: Epithelial tissues help protect the underlying tissues and organs from physical trauma, chemical irritation, and infections.
2. Regulation of material exchange: Epithelial tissues regulate the exchange of gases, liquids, and nutrients between the body and the environment, and between different internal organs.
3. Secretion and Absorption: Epithelial tissues are involved in the secretion of hormones, enzymes, and other substances and can also absorb specific molecules from the body.
4. Sensory Perception: Certain types of epithelial tissues are specialized to sense changes in the environment and transmit this information to the nervous system.
5. Filtration: Epithelial tissues can act as filters, allowing the passage of specific molecules while retaining others.
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FILL IN THE BLANK. the short region on the x chromosome that plays an important role in x-chromosome inactivation is the ______ .
The short region on the X chromosome that plays an important role in X-chromosome inactivation is the XIC ( X-inactivation center) .
Chromosomes are the compact form of genetic material. They are comprised of the strand of DNA and histone proteins. The structure of a chromosome is composed of two chromatids called sister chromatids that are joined together at the centromere.
XIC is located at the q arm of the X chromosome. The inactivation center encodes for four non-translated RNA genes, Xist, Tsix, Jpx and Ftx. All of these are essential for the inactivation process. The process of inactivation is observed in human females.
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What structure organizes spindle fibers?
The structure which organizes spindle fibers is centrosomes.
The structure involved in the formation of spindle fibers is centrioles. They exist in a pair close to the nucleus and are present only in the animal cell. Spindle fibers are assembled by a microtubule-organizing center called centrosomes located at the ends of the spindle. In animal cells, centrosomes contain a pair of organelles called centrioles that help organize the spindle. Spindle fibers are made up of microtubules. Microtubules are polymers of alpha- and beta-tubulin dimers. Microtubules that form the spindle fibers come from centrosomes, which are organelles located at opposite poles near the nucleus. Therefore, spindle fiber formation is brought about by microtubules or cytoplasmic strands.
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Glycoproteins are molecules that are partially simple _______ and partially _________.
Molecules called glycoproteins are made up of both simple proteins and carbohydrates.
The immune system is one of many physiological processes that are affected by glycoproteins, which are molecules made up of protein and carbohydrate chains.
Many viruses have glycoproteins that aid in their ability to penetrate host cells and which can also be useful therapeutic or prophylactic targets.
The body uses glycoproteins for a variety of purposes, and they are highly diverse.
Collagens, for example, offer structure, while immunoglobulins, for example, are involved in immunity (such as IgG).
Mucins are produced into the mucus of the digestive and respiratory tracts, where the particular mucins have the ability to retain water, enabling mucus to function as a potent lubricant.
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How are photosynthesis and cellular respiration related?
a. The products of respiration are the same products as photosynthesis
b. The reactants of respiration are the same reactants as photosynthesis
c. The reactants of respiration are the products of photosynthesis
d. Respiration uses none of the same molecules as photosynthesis
Answer:
based on the bellow reactions
IG: c
Explanation:
photosynthesis:
6CO2+12H2OSunlight ChlorophyllC6H12O6+6H2O+6O2.C6H12O6 + 6O2
respiration:
C6H12O6 + 6O2 → 6CO2 + 6H2O (glucose + oxygen -> carbon dioxide + water).
if the kingdom plantae is someday expanded to include the charophytes (stoneworts), which of the following shared derived characteristics would be included in the revised kingdom? if the kingdom plantae is someday expanded to include the charophytes (stoneworts), which of the following shared derived characteristics would be included in the revised kingdom? rings of cellulose-synthesizing complexes, chlorophylls a and b, cell walls of cellulose, and ability to synthesize sporopollenin rings of cellulose-synthesizing complexes rings of cellulose-synthesizing complexes, chlorophylls a and b, and alternation of generations rings of cellulose-synthesizing complexes, alternation of generations, and ability to synthesize sporopollenin
If the kingdom Plantae is someday expanded to include the charophytes (stoneworts), then the shared derived characteristics of the kingdom will include rings of cellulose-synthesizing complexes and ability to synthesize sporopollenin Option (A)
Why do cell surface membranes produce cellulose?
Each plant cell has cellulose deposited on the exterior. It cannot be generated intracellularly because it is a water-insoluble polymer with a stiff linear structure.
How does cellulose synthase work?
The cellulose synthase complex (CSC) is a large membrane-bound complex that translocates across the plasma membrane plane generating cellulose microfibrils and is involved in cellulose manufacture at the plant plasma membrane.
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based on observations of free ranging chimpanzees, we now know that at least one of our two closest relatives
Based on observations of free-ranging chimpanzees, we now know that at least one of our two closest relatives, the chimpanzee, uses tools in a sophisticated manner.
This behavior was previously thought to be exclusive to humans and shows that chimpanzees have a level of cognitive and motor ability previously underestimated. Studies have shown that chimpanzees use tools for various tasks, such as fishing for termites, cracking nuts, and harvesting honey. This observations evidence has led scientists to re-evaluate the evolutionary relationships between humans, chimpanzees, and other primates, and has also shed light on the development of early human tool use and behavior. The discovery of observations tool use in chimpanzees has expanded our understanding of primate evolution and the origins of human behavior.
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The complete Question is:
Which of the following best describes what we have learned about our closest relatives based on observations of free ranging chimpanzees?
A. They are our only close relatives.
B. They are one of our two closest relatives.
C. They are not closely related to us.
D. Their behavior is not related to human behavior.
Nanotubes are extensions of the ______ that can function in ______.
Nanotubes are membrane extensions with nutrition transport capabilities.
Tunneling nanotubes (TnTs) are lengthy, non-adherent cytoplasmic extensions based on actin that link a wide range of cell types together and serve as intercellular bridges. As an underutilised method of cell-to-cell communication and content transfer, these special conduits have drawn growing interest. The potential for "membrane nanotubes," "'intercellular' or 'epithelial' bridges," or "cytoplasmic extensions" to promote direct intercellular communication is currently being researched. Human malignant pleural mesothelioma and lung adenocarcinomas treated with tunnelling nanotubes showed effective transfer of cellular components, such as proteins, Golgi vesicles, and mitochondria, between cells derived from various well-proven cancer cell lines.
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in a diploid population, individuals that are homozygous recessive for a particular locus produce viable offspring at only 5% of the rate that heterozygous or homozygous dominant individuals. what is the selection coefficient for the homozygous recessive genotype?
The selection coefficient for the homozygous recessive genotype is 0.95.
Selection coefficient in genetics measure the relative fitness in population genetics. It's shows us a relative reduction in the contribution that a particular genetic composition makes to the gametes as compared with other types of genetic composition in the population. It is a essential quantitative description of evolution. It is denoted by Letter s and is given by 1 minus adaptive value of the genotype. That is s = 1 - W. So is the adaptive(W) value is 5%, That is equal to 0.05 therefore s or selection coefficient is equal to 1-0.05 that is 0.95. This selection coefficient is used by scientists to study the rate at which gene frequencies change from generation to generation.
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why is heating a first step in pcr amplification of extracted dna?
The intensity breaks the hydrogen obligations of the first DNA test and isolates the DNA into single strands (this is named denaturation of twofold abandoned DNA)
During the most important phase in PCR, the beginning arrangement is warmed to the fundamental temperature, ordinarily somewhere in the range of 90° and 100°C. As the intensity fabricates, it breaks the securities joining the two strands of the DNA twofold helix, in this manner empowering the DNA to isolate into two single strands.
Enhancement is accomplished by a progression of three stages: (1) denaturation, in which twofold abandoned DNA formats are warmed to isolate the strands; (2) strengthening, in which short DNA particles called preliminaries to tie to flanking districts of the objective DNA; and (3) expansion, in which DNA polymerase broadens the 3′ finishes of each.
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when taking a systematic random sample of size n, every group of size n from the population has the same chance of being selected.
In fact, this is true. Each group of size n from the population has an equal chance of being chosen when using a systematic random sample.
This is so because each element in the sample is chosen at random from the population, followed by the selection of the next n elements.
With this, each group of size n is guaranteed an equal probability of getting chosen.
Systematic Sample members are picked from a bigger group using a fixed, periodic interval but a chance primary source in sampling, a type of probability sampling approach.
By splitting the sample size of the population by the number of samples desired this interval, also known as the sampling interval, is computed.
Applied properly to a sizable population of a specific size, systematic sampling.
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what are 2 ways by which protists obtain energy
Capture the sun's energy and transform it into useable energy. Another kind of protozoa obtains their energy by consuming other living things.
What use do protists serve?Protists have a variety of roles in the ecological food chain, including primary producers, suppliers of immediate food, and decomposers. In addition, a lot of protists were parasites of both animals and plants that can kill people or destroy crops that are worth a lot of money.
What are protists known for?These protists are multicellular as well as single-celled (algae, diatoms) (seaweed or kelp). Because these protists are autotrophic, they are referred described as being "plant-like." These protists have chloroplasts and use photosynthesis to create their own food.
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Carrion beetles lay their eggs in dead animals and then bury them in the ground until they hatch. Assume that the preference for fresh meat (F) is dominant to the preference for rotted meat and that the tendency to bury the meat shallow (S) is dominant to the tendency to bury the meat deep. Suppose a female carrion beetle homozygous dominant for both traits mates with a male heterozygous for both traits. What is the probability of getting a heterozygous fresh meat eater that buries it's meat in a deep hole?0,1/4,1,1/2,3/4
The chance of having a heterozygous fresh meat eater who buries its meat in a deep hole is one-half. This is due to the fact that the dominant gene for fresh meat (F) conceals.
the recessive allele for rotten meat (f), and the dominant allele for shallow burial (S) conceals the recessive allele for deep burial. From each parent, the kid will acquire one allele for each attribute. If the mother is homozygous dominant for both qualities, the dominant allele will always be passed on. Because he is heterozygous for both qualities, the male has a 50% probability of passing on each allele. If the kid inherits F from the mother and s from the father, it will be The likelihood of being heterozygous for both characteristics (Ff and Ss) is 1/2.
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Why skin cancer is an important issue?
Answer:
It is one of the most prevalent cancers and also one of the most preventable ones. That is what makes it an important issue. Most of the time, it is caused by too much exposure to ultraviolet (UV) rays. This affects your epidermis (the outermost skin layer), where the cancer begins. To lower your chances of getting skin cancer, it is important to educate yourself. If caught early, it is treatable and often curable.
Skin cancer is the most frequent malignancy in the United States, with over 5 million cases identified each year.
Skin cancers are malignancies that develop on the skin. They occur as a result of the growth of aberrant cells with the potential to infiltrate or spread to other sections of the body. Skin cancers are classified into three types: basal-cell skin cancer (BCC), squamous-cell skin cancer (SCC), and melanoma.
Reduced UV radiation exposure and the use of sunscreen appear to be effective means of avoiding melanoma and squamous-cell skin cancer. Melanoma treatment may include a mix of surgery, chemotherapy, radiation therapy, and targeted therapy. Skin cancer is the most frequent type of cancer, accounting for at least 40% of all cancer cases worldwide. The three primary kinds of skin cancer have become increasingly prevalent in the previous 20 to 40 years, particularly in areas with a largely White population.
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What chromosomes line up randomly during metaphase Therefore it is possible for any combination of chromosomes to be passed on from parent to offspring?
Homologous pair of chromosomes line up randomly during metaphase.
The chromosomes are all lined up at the center of the cell by the spindle during metaphase, ready to divide. Microtubules from opposing spindle poles seize the two sister chromatids of each chromosome. The homologous chromosomes align separately along the metaphase plate in metaphase II. Any combination of chromosomes can thus be passed on to the next generation.
The metaphase homologous pairs' random orientation I enables the generation of gametes with a wide range of homologous chromosomal combinations. There are certain locations in each meiotic cell where homologues can connect and trade genetic material. These locations are mostly picked at random.
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after observing the phylogenies of the different islands, did adaptive radiation and convergent evolution occur? why?
Each island has a different order of ecomorph evolution.
The phylogenetic hypotheses is that which provides a framework for examining the evolution that is morphological, ecological, behavioral, and physiological adaptations and the circumstances in which they have arisen and they allowed adaptive radiation. Vertebrate taxa have been a prime focus for this research with topics that includes phenotypic plasticity by providing an early common ground for ecologists and biologists. When specialists in ecology look at an adaptive radiation event, they try to demonstrate the link between a supposedly adaptive feature and the organisms’ environment. When paleontologists look at those same adaptive radiations, they will try to explore the number of species over time in detail.
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A bacterium that only possesses the ability to ferment obtains energy O by glycolysis only. O by fermentation or aerobic respiration. O only in the presence of oxygen. by aerobic respiration only. O only in the absence of oxygen.
A bacterium that only possesses the ability to ferment obtains energy D: "only in the absence of oxygen".
Fermentation is a metabolic process that allows cells to obtain energy in the absence of oxygen. When oxygen is not available, cells can break down sugars such as glucose through a process called glycolysis, which produces a small amount of energy in the form of ATP. During fermentation, the byproducts of glycolysis are converted into organic acids, such as lactic acid or ethanol, which can be used by the cell as a source of energy.
Bacteria that only possess the ability to ferment would not be able to perform aerobic respiration, as it requires oxygen. Thus, they would obtain energy only in the absence of oxygen through fermentation.
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Watson and Crick’s model of DNA displayed all of the following characteristics EXCEPT?
A) One adenine would pair with one thymine
B) Each base pair consisted of one purine and one pyrimidine
C) The two DNA strands run in opposite directions
D) The bases face outside for easy access
E) There could be a means for DNA to easily replicate itself
Watson and Crick’s model of DNA displayed all of the following characteristics EXCEPT The bases face outside for easy access.
Watson and Crick use images to explain that their theory of DNA is made up of two helical strands twisted into a double helix. According to the authors, each strand is made up of a sequence of nucleotides, which are repeating units that each contain a sugar, a phosphate group, and a base.
Which type of DNA does the Watson-Crick model describe?
Which type of DNA does the Watson-Crick model describe? Among the numerous biologically significant forms of DNA, the Watson-Crick double helix model defines the B form of DNA.
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