Populations of organisms that have grown apart from one another are said to be in a state of reproductive isolation. This isolation may result from a genetic mutation or a geographic barrier. The organisms are unable to successfully reproduce with one another as a result.
What is reproductive isolation?A group of living things that have the ability to interbreed or exchange genes is referred to as a species. The deer in the aforementioned example is an example of speciation, which is when evolution causes one species to split into two or more.
Many factors, such as shifting continents or lava flows, might divide one population into two or more tribes. The deer underwent modifications to the point of reproductive isolation throughout their time apart. This is the situation in which two groups of animals coexist in close proximity to one another but cannot interbreed.
Pre-zygotic barriers and post-zygotic barriers are the two main divisions of the numerous reasons why two organisms cannot mate.
Reproductive isolation is a condition in which multiple species may coexist in a given area but are unable to interbreed due to individual characteristics. Isolating mechanisms are things that prevent particular species or groups of organisms from reproducing sexually.
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excessive deposits of iron throughout the body: a.purpura b.polycythemia vera c.cooley anemia d.hemochromatosis e.thrombocytopenia
Excessive deposition of iron throughout the body is called hemochromatosis leading to increase in iron level.
What is hemochromatosis and how does suddenly iron level increases in body?Hemochromatosis is the condition in which iron gets deposited in the body throughout in large amount.Actually hemochromatosis is the condition in which iron is absorbed from the food or diet you take.The excessive absorbtion of iron from your diet causes excessive deposition which eventually increases the iron level throughout the body.Here the question is asked about the condition in which the body gets lot of iron deposited throughout.The answer would be hemochromatosis which is a condition in which there is excessive deposits of iron throughout the body.To know more about iron visit:
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Use the model here to describe the transfer of matter and flow of energy from one trophic level to another within an ecosystem. All of the following must be addressed in your response to receive full credit:
a. Discuss the transfer of biomass when one organism eats another. Use your knowledge of digestion to discuss how food is broken down and used by the consumer.
b. Explain what happens to the energy that is not transferred from one organism to another.
c. Explain why there are typically fewer organisms at the top of an energy pyramid.
d. Use specific numbers and calculations to support your explanation.
The transfer of matter and flow of energy from one trophic level to another within an ecosystem begins with producers because they are the base of the pyramid.
What is an Ecosystem?An ecosystem may be defined as a place or an area where members of different species live together and interact with one another for the purpose of food, shelter, space, and mating partner.
The producers capture the light energy from the sun and transform it into chemical energy in order to synthesize food which is then transferred to other trophic levels of an ecosystem in a sequential manner. There is a loss of matter from one level to another since some are lost as fecal matter because they could not be processed.
The identical methodology happens in the case of the energy from one level to the other. The energy decreases since a part is lost as heat, and the animal uses a part of it to stay alive. As a consequence of this decrease in energy, the higher levels receive less energy than the ones in the lower part of the pyramid.
Therefore, the producers perform their functions and initiate the process through which residues from all the levels obtain their food and start the cycle again.
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What are your ways to keep your sexuality healthy give at least five?.
5 ways to have good sexual health are: (1) maintain proper hygiene, (2) get tested for STDs in case of risk,(3) maintain healthy lifestyle and avoid alcohol, (4) have proper conversations with your partner, and (5) use barrier method of contraception.
STD stands for Sexually Transmitted Diseases. These diseases are generally spread through sexual contact but caused due to pathogens like bacteria. virus, etc. The examples include: Chlamydia. Gonorrhea. Genital Herpes. Hepatitis, etc.
Barrier method of contraception includes use of external barriers to prevent pregnancy. These barriers can be spermicide, condoms, cervical cap, etc. These barriers also help in prevention of contracting the STDs.
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Rust forms when iron metal (Fe) reacts with oxygen (O2) to produce iron oxide (Fe2O3). Write a balanced equation for this reaction. Suppose you find the mass of an iron object, let it rust, and measure the mass again. Predict whether the mass will increase, decrease, or stay the same. Explain your answer in terms of the law of conservation of mass.
The mass will increase, decrease, or stay the same as this reaction support the law of conservation of mass because the mass of the rusted nail equals the mass of iron and the oxygen from the air it reacted with to form the rust.
What is Law of conservation of mass?The Law of conservation of mass states that in a closed system mass is neither created nor destroyed, but it is rather constant through out the process and this law validates the fact that the mass of the reactant is equal to the mass of the product in a closed system.
This reaction support the law of conservation of mass because The mass of the rusted nail equals the mass of iron and the oxygen from the air it reacted with to form the rust.
Therefore, The mass will increase, decrease, or stay the same as this reaction support the law of conservation of mass because the mass of the rusted nail equals the mass of iron and the oxygen from the air it reacted with to form the rust.
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Which functional area of the cerebrum is responsible for the ability to form words?.
The ability to form words is formed in Broca's area of the cerebrum, and due to the proper functions of this area, a person can make speech and express their thoughts. Broca's area is responsible for this.
What are the various parts of the brain?The brain has different parts, such as the forebrain, which is further divided into the cerebrum, diencephalon, etc., and these parts regulate many hormonal and neuronal activities. The midbrain and hindbrain control vision as well as involuntary activities such as respiration etc. All three parts of the brain control both voluntary and involuntary activities.
Hence, the brain has Broca's area, which regulates speech and word formation.
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Identify the characteristics associated with australopithecus afarensis in contrast to earlier hominins.
There are lot of similarities and differences between Australopithecus afarensis and hominis.
Australopithecus afarensis characteristics:
rounded heels, side-to-side and front-to-back double arches, and nondivergent huge toes Diverse tooth wear suggests a diverse diet inhabited a variety of environmentsNot Australopithecus afarensis Characteristics:
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ANSWER ALL 3 PLEASE
The apparatus shown below measures the oxygen consumed by a small animal. As oxygen is consumed, the water droplet moves closer to the flask. Because carbon
dioxide is absorbed by the potassium hydroxide solution on the filter paper, it does not affect the results.
1. You are performing a lab in biology class to determine, quantitatively, if
temperature affects the rate of oxygen consumption by a small animal. You will be testing the oxygen consumption of the animal at 0°C, 15°C, and 30°C. Write a prediction about the relationship between oxygen consumption and temperature. (1 point)
2. Using this apparatus, or a similar one, write a procedure to test your
prediction. Procedures should be detailed, specific, and written in numbered point form. (2 points)
3. State the manipulated variable, responding variable, and at least two
controlled variables for this experiment. (2 points)
Answer: 0°C, 15°C, and 30°C. Write a prediction about the relationship between oxygen consumption and temperatur
Explanation: absorbed by the potassium hydroxide solution on the filter paper, it does not affect the results.
you walk in the forest and see a tiger at close range. as a result high levels of epinephrine are released. what are the reactions that allow you to run away from the tiger?
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you create a fusion trna gene in which you fuse the anticodon for tryptophan with the trna for tyrosine. you replace all of the tryptophan trnas in a cell with this chimeric trna. what would the sequence of this peptide be (assume translation starts at the first nucleotide)?
This peptide will contain the amino acids methionine, tryptophan, valine, tyrosine, and serine in that order.
A gene is created by fusing sections of two distinct genes. Fusion genes and the proteins that result from them can be created in a lab or arise naturally in the body when a portion of one chromosome's DNA travels to another.
A peptide or protein's primary structure (or sequence) is always shown left to right, starting with the amino terminus and moving toward the carboxy terminus.
The steps for peptide sequencing by mass spectrometry are as follows. Proteins are initially broken down into smaller peptides. Prior to the examination, these peptides are ionized and transported from a liquid chromatography column into a mass spectrometer.
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Molecularly, a gene is an organized unit of blank______ sequences that can be transcribed into rna.
Molecularly, a gene is an organized unit of DNA sequences that can be transcribed into RNA.
The general laboratory technique of determining a DNA molecule's exact sequence of nucleotides, or bases, the exact sequence of nucleotides, or bases, in a DNA molecule is referred to as DNA sequencing. The bases' sequence (often referred to by the first letters of their chemical names: A, T, C, and G) encrypts the biological material used by cells to develop and function.
Deoxyribonucleic acid (DNA) is a polymer made up of two polynucleotide chains that coil around one another to form a double helix. The polymer contains genetic instructions for all known organisms and viruses' development, functioning, growth, and reproduction. Nucleic acids include DNA and ribonucleic acid.
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how is translation initiated? view available hint(s)for part a hint 1for part a. how is translation initiated? the start codon signals the start of translation the trna bearing methionine binds to the start codon the large ribosomal subunit binds to the small one the small ribosomal subunit binds to the mrna all of the listed answers are correct.
The Translation initiated is Option D.All of the listed answers are correct.
At the initiation of translation ribosomes and tRNA bind to the mRNA. tRNA is located at the first docking site of the ribosome. The anticodon of this tRNA is complementary to the start codon of the mRNA where translation begins. After binding to the mRNA, the ribosome initiates translation at the start codon AUG and moves the mRNA transcript one codon at a time until it reaches the stop codon.
When tRNA recognizes and binds to the corresponding codon in the ribosome, it transfers the corresponding amino acid to the end of the growing amino acid chain. tRNA and ribosomes then continue to decode the mRNA molecule until the entire sequence is translated into protein. tRNA acts as an adapter molecule during the translation process. Formerly known as soluble RNA or sRNA. As an adapter, it connects amino acids to nucleic acids.
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required information required information bionow video activities: cell division view check skip to question view this video and answer the questions that follow to demonstrate your understanding of the main points. current time 0:00 / duration 6:29 1x what was the purpose of this experiment? what was the purpose of this experiment? multiple choice determine the most effective way to stimulate root growth in dogwoods purchase and plant new trees to see which type grow best buy new dogwood seeds and cultivate them determine the most effective way to remove dogwood from a field provide better nutrition and habitat for deer
Answer: its a
Explanation: its a
Which of these features is shared between eukaryotic and prokaryotic gene regulation?.
The transcriptional level controls gene expression in both prokaryotes and eukaryotes. Transcription factors, activators, and repressors regulate both methods. Genes in both prokaryotes and eukaryotes can be controlled to produce different gene products.
What is transcription?The process of creating RNA from DNA. Protein, which gives an organism its form, receives genetic information from DNA. The consecutive actions of transcription (turning DNA into RNA) and translation cause this information flow (RNA to protein). When a certain gene product is required at a specific moment or in a specific tissue, transcription takes place.Typically, just one strand of DNA is copied during transcription. The RNA molecules created are single-stranded messenger RNAs, and this is referred to as the template strand (mRNAs).The coding or sense strand refers to the DNA strand that would match the mRNA. Pre-mRNA is the first byproduct of transcription in eukaryotes (organisms with a nucleus).To learn more about transcription, refer to
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a substance that provokes an immune response is called an a) immunoglobulin. b) antihistamine. c) antibody. d) antigen. e) allopath.
Antigen is a chemical that causes an immunological reaction.
What compounds elicit an immunological response?Antigens are molecules, typically proteins, that are present on the surface of bacteria, viruses, fungi, and cells. Antigens can also be made up of nonliving materials like poisons, chemicals, medications, and foreign objects (like splinters). Antigen-containing compounds are recognized by the immune system, which then attempts to destroy them.
What is the immunological reaction known as?The primary goal of the innate immune response is to stop the migration and spread of foreign pathogens within the body as soon as possible. The adaptive immune response is the second line of protection against external infections.
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What is textual form example?.
textual style "Textual form" refers to a text that is conveyed in alphabetical or other understandable characters using any support that allows for reading, recording, and reproduction of the text's information in tangible form.
Textual form refers to a text that is conveyed in alphabetical or other understandable characters using any support that allows for reading, recording, and reproduction of the text's information in tangible form.
This approach entails using a paragraph or a series of paragraphs to communicate data.
An inquiry commission's official report is often presented as text. An example would be that in 1999, out of a factory's total of 5,000 employees, 4,200 were Trade union members.
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true or false: with nissl staining, we can see a rough boundary of a neuron soma, but with dapi staining, it is hard to determine the soma boundary.
It is false that with nissl staining, we can see a rough boundary of a neuron soma, but with dapi staining, it is hard to determine the soma boundary.
The vicinity of the neuron containing the nucleus is referred to as the cell frame, soma, or perikaryon. The cell frame is the metabolic middle of the neuron.
What is the feature of soma in neuron?
The Soma or cell frame of a neuron includes the nucleus and different systems not unusual place to residing cells. These systems aid the chemical processing of the neuron; the maximum crucial of that's the manufacturing of neurotransmitters.
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Please hurry
Which of the following is the relatively largest type of organism?
Select one:
a.
protozoan
b.
virus
c.
fungi
d.
bacteria
I think your answer would be B: Virus.
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Hope this helps! Sorry if it's wrong!
Have a great day and God bless! :D
Answer:
Protozoan
Explanation:
I took the quiz
In noncyclic photophosphorylation, electrons flow in a one-way path from water to?.
In noncyclic photophosphorylation, electrons flow in a one-way path from water to NADP+.
Photophosphorylation refers to the phosphorylation of ADP to produce ATP during the photosynthesis process. Under aerobic and anaerobic conditions, cyclic photophosphorylation takes place, with sunlight serving as the primary source of energy for living things. The universal energy unit of life is a phosphate molecule called ATP, which is produced by all organisms. In photophosphorylation, protons are pumped across a biological membrane using light energy. This process is mediated by the movement of electrons through an electron transport chain. Proton gradient energy is stored in this way. ATP is produced from ADP and inorganic phosphate as the protons return through the enzyme ATP synthase. The Calvin cycle relies on ATP to help with the production of carbohydrates from carbon dioxide and NADPH.
Cyclic photophosphorylation is the name given to the photophosphorylation procedure that leads to the cyclic movement of electrons during the synthesis of ATP molecules. In this procedure, plant cells only convert ADP to ATP to provide the cells with immediate energy. Non-cyclic photophosphorylation is the name given to the photophosphorylation procedure that causes the electrons to move non-cyclically in order to synthesise ATP molecules using the energy from excited electrons supplied by photosystem II.
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How do you know if the molecules have moved through the dialysis tubing
Answer:
– Students should observe a purple/black color inside the dialysis tubing. IIId. Starch diffusion (cont.) The purple/black color indicates that iodine molecules have passed into the dialysis tubing and reacted with the starch inside the tubing.
Explanation:
I took a test6 and this was right. A
What best describes the relationship between the two sets of reactions of photosynthesis, which are the light-dependent reactions and the light-independent
reactions?
A. Each set produces sugars, and by working together they produce more sugars than they would produce separately.
B. Each set produces half of a sugar molecule, and later the two halves are joined together.
C. Only the light-dependent reactions produce sugars, but they depend on products of the light-independent reactions.
D. Only the light-independent reactions produce sugars, but they depend on products of the light-dependent reactions.
Answer:
D
Explanation:
I got it right on my assignment
Only the light-independent reactions produce sugars, but they depend on products of the light-dependent reaction- this sentence best describes the relationship between the two sets of reactions of photosynthesis, which are the light-dependent reactions and the light-independent reactions.
What is photosynthesis?
Through a process known as photosynthesis, plants and other living organisms convert light energy into chemical energy that can later be released through cellular respiration to power the activities of the organism.
ATP and NADPH are produced by the light-dependent reactions and utilized by the light-independent reactions.
Hence the correct option is D; Only the light-independent reactions produce sugars, but they depend on products of the light-dependent reaction
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What event most directly triggers the release of calcium from the terminal cisternae?.
Action potential propagation down the T tubule most directly triggers the release of calcium from the terminal cisternae.
The action potential travels down the t-tubules and excites the sarcoplasmic reticulum, causing calcium to be released. When calcium binds to troponin, it causes conformational changes in the sarcomere. As a result, the interaction of the sarcomere's thick and thin filaments causes muscle contraction. As the action potential travels down the T-tubules in cardiac muscle cells, it activates L-type calcium channels in the T-tubular membrane. Calcium enters the cell when the L-type calcium channel is activated.
A sarcomere is a myocyte's basic contractile unit. Sarcomeres are made up of two main protein filaments (thin actin and thick myosin filaments), which are responsible for muscular contraction.
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Mark places some cells from an onion skin on a microscope slide. He uses a freshwater solution to make the wet-mound slide. When he observes the cells under the microscope for an extended period of time, what is he most likely to see?.
Mark observes that the cells have dissolved, destroying the cell walls.
What is a Microscope?
A microscope is a device that produces enlarged images of small objects, allowing the observer to get an extremely close look at minute structures at a scale suitable for examination and analysis.
Although optical microscopes are the focus of this article, an image can be magnified using a variety of other wave forms, such as acoustic, X-ray, or electron beam, and received via direct or digital imaging, or a combination of these methods.
The microscope may produce a dynamic image (as with conventional optical instruments) or a static image (as with conventional scanning electron microscopes).
A microscope's magnifying power is a dimensionless ratio that expresses the number of times the object being examined appears to be enlarged. It is usually written in the form 10 (for an image magnified 10-fold),
Photography through a microscope can capture images of interest, a technique known as photomicrography.
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This type of activity increases heart rate and uses oxygen to provide energy as atp.
Proteins, lipids, and carbohydrates are broken down by oxygen during aerobic exercise to produce ATP. This pathway operates a little more slowly than anaerobic pathways but can produce more ATP since it relies on the circulatory system to deliver oxygen to working muscles. Aerobic, which means "with air," refers to the process by which the body converts oxygen into energy. This usually refers to any exercise session that lasts more than two minutes. "Steady state" exercise is defined as continuous aerobic activity. Anaerobic means "without air" and describes the body's capacity to produce energy.
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after our solar system began to form dust and gas combined into small bodies that formed the plants what are these small bodies called
If a scientist is monitoring cytokinesis in a cell, then the scientist must be witnessing?.
If a scientist is monitoring cytokinesis in a cell, then the scientist must be witnessing Anaphase
What is cytokinesis ?In biology, cytokinesis is the process through which a single cell physically divides into two. Cytokinesis, which occurs throughout embryonic development as well as tissue growth and repair in higher plants and animals, is the primary reproductive activity of unicellular organisms.
Cytokinesis serves the following purposes The process aids in preserving the precision of cell division. where the descendant cells' cytoplasmic component is distributed uniformly. The method aids in giving the division more accuracy.Learn more about Cytokinesis here:
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how does dna replication between prokaryotes and eukaryotes compare/contrast? choose all that apply.
SIMILARITIES
All prokaryotic and eukaryotic species replicate their DNA in a similar manner. The DNA helicase enzyme is responsible for unwinding the DNA . Polymerases are an enzyme family that facilitates the synthesis of new DNA strands.
Both kinds of organisms also adhere to a replication strategy known as semi-conservative replication. A leading and a trailing strand are created in this arrangement as a result of the distinct directions in which the individual DNA strands are produced.
Small DNA fragments known as Okazaki fragments are produced and subsequently fused to form lagging strands. Both kinds of organisms start new DNA strands with a little RNA primer.
DIFFERENCES
The discrepancies in the size and complexity of the DNA and cells of these organisms are largely responsible for the differences between prokaryotic and eukaryotic DNA replication. A prokaryotic cell has 25 times as much DNA as an ordinary eukaryotic cell.
Prokaryotic cells have a single point of origin, simultaneous replication in two opposing directions, and cytoplasmic replication.
On the other hand, eukaryotic cells use unidirectional replication within the cell nucleus and have numerous sources of origin. Eukaryotes have four or more different types of polymerases, compared to one or two in prokaryotic cells.
Prokaryotic cells replicate far more quickly than eukaryotic cells do. While animal cells like human cells can take up to 400 hours, some bacteria can grow in as little as 40 minutes. Eukaryotes also have a unique method for duplicating the telomeres that are found at the ends of their chromosomes.
Prokaryotes contain circular chromosomes, which eliminate the need for ends. Finally, whereas eukaryotic cells only undergo DNA replication during the S-phase of the cell cycle, short replication occurs almost continuously in prokaryotes.
What is DNA replication?
Cell duplicate their genome's DNA through a process known as DNA replication. Before dividing, a cell must copy (or duplicate) its entire genome in order to make sure that each daughter cell will have a full genome.
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Describe how science can have an effect on society.
Answer:
The science is very important in the evolution and the improvement of the lifestyles of the human being. The researches in the sciences help in providing conclusions, which are helpful in day to day life. The technologies and innovations make life easier by providing various tools and techniques. Also, the researches in the science provide chance to improve lifestyle by providing scientific knowledge to improve the ethics, education, justice, aesthetics etc.
Explanation:
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blocking the brain gaba-a receptors can lead to blocking the brain gaba-a receptors can lead to amnesia. muscle spasms. excitotoxicity. seizures.
Sedation, hypnosis, anxiolytics, pain killers, & anticonvulsants are only a few of benzodiazepines' effects. It functions by amplifying the current that the GABA agonist causes.
What types of receptors are examples?Specific cell membranes structures that serve as receptors. They mostly consist of proteins that connect to ligands and activate the immune system. These receptors are found on a variety of immune cells, such as B cells, T cells, progenitors, & monocytes.
What substances comprise receptors?Receptors are chemical compounds made of proteins that are employed in pharmacology and biochemistry to receive & translate signals that could be incorporated onto biological systems.
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What is true about the chromosomes within the cells of a sexually reproductive organism?(1 point).
The correct option is B. A cell within the organism will have two sets of chromosomes, one from each parent, identical to the pair of chromosomes in all cells in the body.
What happens to chromosomes in organisms that reproduce sexually?When the two sexual gametes, one from the mother (ovum) and the other from the father (sperm) fuse, fertilization occurs, this generates the formation of the zygote that will later generate the fetus. Each of the gametes will have genetic material and a genetic recombination will be generated.
So, in reproduction there will be 23 pairs of chromosomes in each cell with half of the genes from each parent and a pair of sex chromosomes that tells us the sex of the individual.
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What is true about the chromosomes within the cells of a sexually reproductive organism?
A. A cell within the organism will have two sets of chromosomes, one from each parent, and each type of specialized cell has different genes
B. A cell within the organism will have two sets of chromosomes, one from each parent, identical to the pair of chromosomes in all cells in the body
C. A cell within the organism will have two genetically identical sets of chromosomes and every chromosome in the body will be genetically identical
D. Half of the cells from the organism will have chromosomes from one parent and the other half of cells will have chromosomes from the other parent
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(Translation)
(transcription)
is similar to the DNA process of replication, but only one strand of nucleotides is formed. DNA is used as a template to make messenger RNA (mRNA). The mRNA carries the genetic information from DNA to ribosomes in the cytoplasm.
(Translation)
(transcription)
is the process of converting the information in the mRNA into a sequence of amino acids that make proteins.
The answers include the following below:
Transcription is similar to the DNA process of replication, but only one strand of nucleotides is formed.Translation is the process of converting the information in the mRNA into a sequence of amino acids that make proteins.What is DNA?This is referred to as deoxyribonucleic acid and it is known as the genetic material of most living organisms and it ensures that traits are passed from the parent to the offspring during reproduction.
Transcription involves the making a copy of RNA from the DNA while translation involves creating proteins from an mRNA template.
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