many neurons of joints help to inform the brain about the activity of the joint, including pain or position of the joint. these types of neurons are classified as _____________________ neurons.
Many neurons of joints help to inform the brain about the activity of the joint, including pain or position of the joint. these types of neurons are classified as afferent neurons.
The neurons which informs the brain about the joints action are afferent somatic neurons, which are called as proprioceptors. Neurons are the information carrying, messenger unit which helps in transmitting information from skin/ organs system to the brain and vice versa. They are found in million of numbers inside the body. Afferent neurons are those which carry information from sensory receptors on the skin and organs to the central nervous system (brain) while efferent neurons carry motor information away from the central nervous system to the organs and other receptors on the body.
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which organelle is responsible for the fact that onions can make you cry? hint: unique to plant cells and stores nutrients.
Vacuole organelle is responsible for the fact that onions can make you cry.
Plant vacuole serve a variety of purposes and are crucial for a plant's growth and development. Vacuoles are incredibly dynamic and pleiomorphic, and the type of cell and growing circumstances have an impact on how big they are. Vacuoles divide up many cellular elements like proteins, carbohydrates, ions, and other secondary metabolites. They are crucial to how plants react to biotic and abiotic signaling pathways. We will discuss the mechanisms underlying plant vacuole formation, the patterns of changes in vacuole morphology in particular cell types, and the function of SNAREs and Rab GTPases in vacuolar trafficking in this review. Plant vacuoles can differ in form and dynamics depending on the type of cell they are in or the circumstances they are in. It is now possible to analyze the dynamic changes in vacuole morphology under various growth circumstances as well as the cellular factors that influence vacuole morphology thanks to the introduction of GFP-tagged vacuolar markers.
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microfilariae occur during which stage of heartworm larvae? question 2 options: first second third fourth
Heartworm microfilariae are first-stage larvae.
A mosquito is required for microfilariae to develop into infectious larvae. The infectious larvae are transferred to the dog through the bite wound when the infected mosquito attacks another dog. It takes approximately 6 to 7 months in a freshly afflicted dog. Heartworm development goes through the first larval stage (L1) and second larval stage (L2) within a mosquito. The mosquito finds a host and bites it, depositing the larvae under the skin at the bite site once the larvae have reached the infectious third larval stage (L3). it takes this for the heartworm larvae to develop into adult heartworms.
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how does the models support the idea that genetic mutations may arise from environmental factors?
Environmental factors can play an important role in the development of genetic mutations. Models have been developed to demonstrate how environmental factors interact with an organism's genetic code and can result in changes that can be passed on to the next generation.
Exploring the Role of Environmental Factors in the Development of Genetic MutationsThe models support the idea that genetic mutations may arise from environmental factors by showing how environmental factors can interact with the genetic code of an organism. For example, environmental factors such as:
Radiation ToxinsOther chemicalsThese can interact with DNA, leading to changes in the genetic code. These changes can then result in mutations that can be passed on to the next generation. The models also show how certain genetic changes can result in beneficial adaptations that help organisms survive in their environment.
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Reactive oxygen intermediates and reactive nitrogen intermediates produced by phagocytic cells are effective in killing invading microorganisms. True O False
The statement 'reactive oxygen intermediates and reactive nitrogen intermediates produced by phagocytic cells are effective in killing invading microorganisms' is true.
In the field of biology, phagocytic cells can be described as the type of cells that eat or kill the microorganism by releasing such compounds that are toxic to the microorganism.
Oxygen intermediates and nitrogen intermediates are formed by the phagocytic cells and these intermediates are reactive enough to bind to the compounds in the microorganism and hinder their activity. When the activities of the microorganism are hindered such that they cannot carry out the basic life process, the microorganism is killed. Hence, the statement above is true.
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Though scientists previously believed that domestic dogs evolved from Canis ______, the gray wolf, genetic analysis indicates they actually evolved from a now extinct species
Though scientists previously believed that domestic dogs evolved from Canis Lupus, the gray wolf, genetic analysis indicates that they evolved from a now-extinct species.
The Canis lupus, the gray wolf, and Canis familiaris, the domestic dog have so many common characteristics. However, after research, the origin seems to be slightly different according to scientists.
The dog was domesticated about 23,000 years ago by the people of Northern Eurasia at that time. This was far much later after its complete evolution. The evolution of the dog can be traced back to a common ancestor as the wolf but they belong to different classes according to the new discovery.
Since the newly discovered species of the ancestors of the dog is extinct, not much is known about them except a reconstruction of how they might have looked like.
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The dominant trait for height in a particular plant is tall (t), and the recessive trait is short (t). If both parents are heterozygous for height (tt), which ratio of offspring will the parents produce based on mendel's law of segregation?.
If both parents are heterozygous for height (Tt), then the ratio of the genotype is 1TT : 2Tt : 2TT and the phenotype of the offspring is 3 tall : 1 short.
A cross between parents is heterozygous for height (Tt), where T is the dominant gene and t is the recessive dominant. The gametes formed from the two parents are T and t.
Offspring produced by crossing heterozygous parents with height (Tt), allows them to have three types of genotypes namely TT, Tt, and tt with a ratio of 1:2:1.
The phenotypes of these offspring were 3 tall of 4 offspring and 1 short of 4 offspring. The ratio can be written 3: 1
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n cell x, which has the a fate, gene 1 is on. in cell y, which has the b fate, gene 1 is off. what will happen if there is a loss-of function mutation in gene 3?
In cell X, which has the A fate, gene 1 is on. In cell Y, which has the B fate, gene 1 is off. If there is a loss of-function mutation in both Gene 3 and Gene 5 then Cell X will have the B fate and cell Y will have the B fate.
Genes that have sequence mutations can produce a wide range of alleles, or variants, in the population. These alleles may produce slightly varied phenotypic traits as a result of encoding slightly various copies of the same gene. A particular allele of a common gene is usually referred to as "carrying a gene" in scientific literature. Natural selection/survival of the fittest and genetic drift of alleles are two methods that cause genes to evolve. As new events are uncovered, the understanding of genes is always being refined. A gene's coding regions, for instance, might be divided up into a number of exons, whereas the gene's regulatory elements might be located outside of them. Instead of DNA, some viruses store their genomes in RNA.
The complete question is:
Below is a signaling pathway that determines the fate of cells X and Y [note that a pointed arrow ( → ) indicate activation and the blunt arrow ( ---| ) indicates inhibition].
1 → 2 ---| 3 ---| 4 → 5 ---| 6
In cell X, which has the A fate, gene 1 is on. In cell Y, which has the B fate, gene 1 is off. What will happen if there is a loss of-function mutation in both Gene 3 and Gene 5?
Question options:
a) Cell X will have the A fate and cell Y will have the B fate.
b) Cell X will have the A fate and cell Y will have the A fate.
c) Cell X will have the B fate and cell Y will have the B fate.
d) Cell X will have the B fate and cell Y will have the A fate.
e) There is not enough information to answer this question.
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ne ouncements dules des abus protein made working enhancer Source: The McGraw-Hill Companies, Inc. Crossbreeding between gorillas and chimpanzees Match each word or phrase to identify whether or not each word or phrase represents a reason for the change in chimpanzee hands. Mutations in chimpanzee DNA Differences in the ways chimpanzees use their hands Sexual reproduction no protein made Differences in enhancer sequences mutant enhancer [Choose] [Choose] [Choose] [Choose] [Choose]
The completed sentences are as follows:
Crossbreeding between gorillas and chimpanzees( Represents a reason for the change)Mutations in chimpanzee DNA ( Represents a reason for the change)Differences in the ways chimpanzees use their hands ( Doesn't represents a reason for the change)Sexual reproduction ( Doesn't represents a reason for the change)Differences in enhancer sequences( Represents a reason for the change).What is Crossbreeding?Crossbreeding, also known as hybridization, is the process of breeding individuals from two different breeds, varieties, or species to produce new, genetically distinct offspring. This is often done in agriculture to produce plants or animals with desired traits, such as improved disease resistance or increased productivity.
Crossbreeding can also occur naturally when members of different breeds or species mate, producing hybrids that may have unique characteristics and traits. Crossbreeding can be a useful tool for promoting genetic diversity and improving the overall health and vitality of a population.
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many people with xy chromosomes and androgen insensitivity syndrome (ais), like katie, are not diagnosed until later in life, rather than at birth. why is that?
The testosterone that Katie's testes produced when she was born did not affect her cells in any way. To generate progeny, earthworms can fertilize one another.
Doctors simply needed to implant the replacement gene into bone marrow cells because there was only one gene to replace. Despite having XY chromosomes, children with AIS lack the ability to respond to testosterone due to an inherited genetic disorder (the sex hormone). The formation of the male sex is therefore not occurring normally. The genitalia seems female or undersized. Also not internally developed are an ovary or a womb. In general, females have two X chromosomes (XX), whereas males typically have an X and a Y chromosome (XY). Although AIS patients inherit a genetic change that inhibits their bodies from responding to testosterone, they have XY chromosomes (the sex hormone). This indicates that male sex development does not proceed normally.
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lymphocytes that can get rid of cells of the body that have been invaded by foreign organisms are called
lymphocytes that can get rid of cells of the body that have been invaded by foreign organisms are called killer t cells.
an immune cell variety that has the ability to eradicate particular cells, such as virus-infected cells, cancerous cells, and alien cells. To destroy cancer cells, it is possible to isolate killer T cells from other blood cells, develop them in a lab, and then provide them to a patient. T-cells can be divided into two categories: Helper T-cells promote the production of antibodies by B-cells and aid in the growth of killer cells. Cells that have already been invaded by an alien invader are directly destroyed by killer T-cells. A CD8 receptor is present on the surface of cytotoxic T cells. Major Histocompatibility Complex (MHC) Class I molecules interact with cells through the CD8 receptor to detect infection in healthy cells. The CD8 receptor triggers the cytotoxic T-cells when it detects an infected cell.
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what can denature a protein by breaking the hydrogen bonds that maintain the secondary and tertiary structures of proteins? select all that apply.
The denature protein widely known that alcohols may have sturdy results on protein structures.
For example, monohydric methanol and ethanol generally denature, while polyhydric glycol and glycerol protect, protein structures.
Alcohol denatures a protein specifically through disrupting the intramolecular hydrogen bonding among the facet chains, that's crucial to hold the tertiary protein shape.
The retailers maximum regularly used for this reason are urea and guanidinium chloride. These molecules, due to their excessive affinity for peptide bonds, destroy the hydrogen bonds and the salt bridges among fantastic and terrible facet chains, thereby abolishing the tertiary shape of the peptide chain.
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neurons and liver cells in humans can produce different proteins from the same dna. this is because:
All of the cells within a complex multicellular organism such as a human being contain the same DNA;
however, the body of such an organism is clearly composed of many different types of cells. Although all cells contain the same DNA sequence, muscle cells are different from nerve cells and other types of cells because of the different genes that are turned on in these cells and the different RNAs and proteins produced.
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What is the process of burning called?
The process of burning is called Combustion. It is a chemical reaction between two or more chemicals, generally including oxygen, that produces heat and light in the form of a flame.
The rate or speed at which the reactants combine is rapid, due in part to the nature of the chemical reaction and in part to the fact that more energy is created than can escape into the surrounding medium, causing the temperature of the reactants to be elevated to further accelerate the reaction.
In general, combustion is one of the most significant chemical processes and may be thought of as the final stage in the oxidation of some compounds.
Though oxidation was formerly thought to be just the interaction of oxygen with any molecule or element, the term has come to describe any reaction in which atoms lose electrons and become oxidized.
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which color is the tube and stopper that is used to collect specimens for serum analysis?
Monoject royal and blue-top tubes colors come in two varieties: one simple and one with the anticoagulant EDTA. To obtain whole blood or serum for trace element analysis, these methods employed.
Each evacuated blood collection tube has a color-coded plastic or rubber cap on top of it. The color serves as a cue as to what kind of additives are in the tube. Chemicals like anticoagulants that keep the blood in tact for laboratory processing are examples of additives. Light blue stopper tube is the color of the tube that must always be filled to the proper ratio.
Red-top tubes are infrequently used, but mottled red/gray, gold, or cherry red-top tubes are typically used to collect serum. Blood that has been combined with an anticoagulant in the collecting tube and has not clotted is used to make plasma. After gathering the whole blood, leave it undisturbed at room temperature to allow the blood to coagulate. Normally, this takes 15 to 30 minutes. By centrifuging at 1,000–2,000 x g for 10 minutes in a refrigerator, the clot can be removed. The substance that collects at the top is called serum.
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In what types of muscle does some of the calcium needed for contraction come from the extracellular fluid?
Cardiac muscle and visceral smooth muscle are two forms of muscle that require extracellular fluid to contract.
In biology, extracellular fluid is bodily fluid that is not confined within cells. It is found in blood, lymph, body cavities bordered with serous (moisture-exuding) membrane, brain and spinal cord cavities and channels, and muscular and other body tissues.
Extracellular fluid is made up of blood plasma, interstitial fluid, lymph, and transcellular fluid (e.g. cerebrospinal fluid, synovial fluid, aqueous humour, serous fluid, gut fluid, etc.). The principal components of extracellular fluid are interstitial fluid and blood plasma.
Extracellular fluids are classified into three types: interstitial compartments, intravascular compartments, and transcellular compartments.
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if you made a change in the dna of a promoter sequence that inactivates the promoter, what would happen at the rna level?
No RNA would be produced since the Rna would be unable to detect and bind the DNA.
Can a promoter's DNA sequence be altered?If the promoter of the DNA is altered, for as by being rendered inactive, RNA polymerase and the accompanying transcription factors won't be able to detect the promoter and bind the DNA to the promoter's operator, and transcription won't begin.
What would occur if the sigma factor's binding to RNA polymerase was broken?Multiple Options No transcription would start if RNA polymerase left the promoter.Stem-loop structure wouldn't arise in this case.There would be no way to identify the terminator sequence.The template DNA wouldn't allow RNA polymerase to connect to it.A new RNA molecule would not be created using the correct nucleotides.
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true or false? a large cerebral hemorrhage in the right hemisphere will lead to sensory and motor deficits on the right side of the body.
False, a large cerebral hemorrhage in the right hemisphere will not lead to sensory and motor deficits on the right side of the body.
A brain blood artery that breaks due to illness or injury is the main cause of cerebral hemorrhage. Blood may now enter the brain because of this. Cells in the brain may be harmed by the abrupt increase in pressure. And a quick rise in blood volume might result in sensory unconsciousness or even death. When the cerebrospinal fluid gaps around the brain are filled with blood, this is known as a cerebral hemorrhage. Both ailments are quite severe. the sensory body's components and the tasks they govern in addition to depleting the brain of oxygen and destroying brain cells.
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If a medical researcher wanted to enhance communication between cells in order to cure a disease or prevent a malady, how might they achieve that? Propose two or more general methods that could be used to enhance signal transmission from cell to cell.
Two general methods that can be used to enhance communication between cells in order to cure a disease or prevent a malady is:
production of ligand molecules that bind to receptors on the cellenhancing the production of cellular receptors.What is signal transmission in cells?Signal transmission is the process where information from one cell is transmitted to another cell.
Signal transmission in cells is also known as signal transduction.
The process of signal transmission is mediated by molecules in the cells known as ligands.
Ligands are molecules that bind to and are recognized by molecules known as receptors.
The receptors are found on the cell surfaces, and when once the ligands bind to them, conformational changes occur in the receptors that help to send the signal to the interior of the cell.
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1. explain how mitosis leads to two daughter cells, each of which is diploid and genetically identical to the original cell
During mitosis, daughter cells are produced that are genetically identical to their parent cells.
Before copying, or "replicating," its chromosomes, the cell evenly splits the copies to provide each daughter cell a full set. The growth phase (G1), during which the cell expands, precedes the DNA replication phase (S phase), which takes place during the cell cycle's interphase. One chromosome produces two chromatids during DNA replication, but only one centromere connects the two of them. Prior to cell division, every chromosome is duplicated, enabling each daughter cell to have the same genetic content. Additionally, this means that any errors produced during cell division that are not fixed will be passed on to the daughter cells from parent cells.
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The immune system is capable of mounting specific responses to particular microorganisms because
lymphocytes are able to change their antigen specificity as required to fight infection.
stem cells determine which type of B and T cells to make.
the body contains an enormous diversity of lymphocytes, each with the ability to respond to a different antigen.
stem cells make different antigen receptors depending on the invading microorganism.
stem cells are able to change their antigen specificity as required to fight infection.
The immune system is capable of mounting specific responses to particular microorganisms because the body contains an enormous diversity of lymphocytes, each with the ability to respond to a different antigen (Option C).
What does the diversity of lymphocytes mean?The diversity of lymphocytes refers to the different types of antibodies that these immune cells may hold, which are required to produce an effective immune response.
Therefore, with this data, we can see that the diversity of lymphocytes is a key issue in fighting against diverse antigenic agents such as bacteria and viruses.
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from the aquatic systems below, where are heterotrophic bacteria the most abundant (cells/ml water)?
In the aquatic system heterotrophic bacteria are most abundant in Upper ocean
Heterotrophic bacteria and the photosynthetic cyanobactin- terium Synchronous are found almost everywhere in the upper ocean. In temperate waters, the annual cycle of their abundance may be quite regular. Generally, both groups are most abundant in summer and least so in winter.
Heterotrophic bacteria derive energy from organic compounds. They are widely distributed and most abundant forms. They may be aerobic or anaerobic. They are omnipresent and found in the food, soil, water. They help in recycling of natural substances.
They are mostly responsible for the decomposition of organic matter. They also live as a parasite and cause various diseases in plants, animals and humans. They are also present as a symbiont in organisms, e.g. Rhizobium in the root nodules of legumes, etc.
Bacteria are used for making curd, antibiotics, nitrogen-fixation, etc. Heterotrophic bacteria can decompose organic matter such as cellulose, keratin, lignin, chitin, etc.
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Andalusian chickens exhibit incomplete dominance and they can have black feathers (bb), white feathers (bb) or gray feathers (bb). What would the phenotypes of the offspring be if you mated a heterozygous male with a heterozygous female?.
If you mated a heterozygous male with a heterozygous female The phenotypes of the offspring would be 25% black feathers, 50% gray feathers, and 25% white feathers.
If we cross Bb with Bb (heterozygous male with a heterozygous female)
B b
B BB Bb
b Bb bb
We are aware that both males and females are heterozygous, which means that their alleles differ, so one would be dominant and the other would be recessive. Thus, Bb would be the same for both men and women, as in the punnet square. We get BB, Bb, Bb, and bb if we cross them. Therefore, black feathers, or BB, account for 25% of that. We have 25% white feathers (bb) and 50% gray feathers (Bb). Therefore,
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The presence of a harmful material in the stomach will probably cause –
A. the absorption of food in the small intestines.
B. the stomach to stop churning and mixing food.
C. the absorption of water in the stomach.
D. vomiting to remove the harmful substance from the stomach.
The presence of harmful material in the stomach will probably cause vomiting to remove the harmful substance from the stomach. Thus, the correct option for this question is D.
What materials are absorbed in the stomach?The materials that are absorbed in the stomach may include glucose and other simple sugars, amino acids, and several fat-soluble chemicals. This is because the water flows equally as quickly from the blood across the gastric mucosa to the lumen of the stomach, the net absorption of water from the stomach is minimal.
The absorption of food in the small intestines and the absorption of water in the stomach involves normal function when the whole digestive system works normally. But the process of vomiting is stimulated when there is a harmful material present within the stomach.
Therefore, the correct option for this question is D.
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which neurotransmitter is released by both preganglionic and postganglionic neurons of the parasympathetic division?
Answer: acetylcholine
Explanation:
given that about 25% of the mammalian genome is associated with genes, including introns and regulatory sequence, what would be the approximate average length of dna per gene if the genome contained 20,000 genes?
About 25% of the mammalian genome is associated with genes, including introns and regulatory sequence, and the approximate average length of DNA per gene if the genome contained 20,000 genes would be 40,000 base pairs.
Mammalian genome is a peer-reviewed journal that publishes analysis and review articles within the fields of biology and genetics in mouse, human and connected organisms. As of Gregorian calendar month 2009 its editors-in-chief are Joseph H. Nadeau and Sir Leslie Stephen D. M. Brown.
An intron is a region that resides inside a cistron however doesn't stay within the final mature mRNA molecule following transcription of that cistron and doesn't code for amino acids that frame the macromolecule encoded by that cistron. Most protein-coding genes within the human ordination carries with it exons and introns.
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Millipedes are carnivores that have a pair of poison claws to paralyze their prey.
a. True
b. False
It is false that millipedes are carnivores that have a pair of poison claws to paralyze their prey.
A carnivore is an organism that principally grub meat, or the flesh of animals. typically carnivores are referred to as predators. Organisms that carnivores hunt are referred to as prey. Carnivores are a significant a part of the organic phenomenon, an outline of that organisms eat that different organisms within the wild.
Millipedes are a bunch of arthropods that are characterized by having 2 pairs of articulate legs on most body segments; they're familiar scientifically because the family, the name derived from this feature. millipedes are herbivores or detritivores.
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what are the differences between the structure and function of epithelial tissue and connective tissue?
what is the expected functional consequence of movement of a transposable element within the genome?
An increase in a protein's synthesis. Due to their repetitious and mobile character, transposable rudiments( TEs) can affect genome malleability both passively and laboriously.
What about the genome?The total collection of DNA instructions present in a cell makes up the genome.The mortal genome is made up of 23 dyads of chromosomes that are set up in the cell's nexus and one bitsy chromosome that's set up in the mitochondria.Everything a person needs to grow and operate is decoded in their DNA.The genome would be the complete instruction primer if the DNA law were a collection of rules that were strictly organized into paragraphs( genes) and chapters( chromosomes).The arrangement of the mortal genome, chromosomes, and genes is basically universal.As we tutored in the former section, there are three genome types that do because the mutation is A to G, independently, AA, AG, and GG.The GG type of these three genome types has the most anti-alcohol action, whereas the AA type has the least exertion and can hardly digest alcohol.The genome's main job is to save, express, and store the inheritable material that gives rise to a cell's structural and functional ministry.The genome is a significant part of the cell's structural makeup, nonetheless.Learn more about genome here:
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in animals, what is the difference between reproductive cloning and therapeutic cloning?
Reproductive cloning involves making the identical copies of an entire organism whereas therapeutic cloning involves making copies of certain damaged tissues or organs by creating embryonic stem cells.
Cloning is the process of making the exact copies of an organism, cell, tissue or organ. The cloned copy has the same genetic sequence as that of the object it was cloned from. The first cloned organism was Dolly, the sheep.
Embryonic stem cell is the cell of the inner cell mass of trophoblast stage of embryo. It is a totipotent cell that has the capability to give rise to all types of cells and form a complete organism.
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