The sickle cell gene is a recessive gene, meaning that an individual must inherit two copies of the gene (one from each parent) to develop the disease.
According to the facts given, it may be assumed that both Timothy and Gina's parents are sickle cell gene carriers, which means they each have one gene for normal hemoglobin and one for sickle cell anemia. This indicates that they have a 50% risk of passing the sickle cell gene to their offspring.
Gina carries the sickle cell trait, which means she inherited both the sickle cell and the normal hemoglobin genes. She will not get the illness as a result, but she is a carrier and can carry the sickle cell gene to her offspring.
Due to the fact that Timothy has sickle cell anemia, he possesses two sickle cell genes—one from each father. This implies that he will grow to develop disease.
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why are bacteria and archaea classified into different domains
Bacteria and archaea are classified into different domains because of differences in their molecular biology and evolutionary history.
The difference between bacteria and archaea are as follows:1. Cellular structure: Bacteria have a simple cellular structure, whereas archaea have unique membrane lipid compositions, giving them a distinct and more complex cellular structure.
2. Metabolic processes: Bacteria and archaea have different metabolic processes, with bacteria being primarily heterotrophic and archaea being primarily autotrophic.
3. Genetic material: Bacteria and archaea have different genetic material. Bacteria have a circular chromosome, whereas archaea have a linear or circular chromosome and also have different types of RNA polymerases and ribosomal RNA.
4. Evolutionary history: Bacteria and archaea have different evolutionary histories and are thought to have evolved independently from a common ancestor, with archaea having a more ancient lineage.
These differences in cellular structure, metabolic processes, genetic material, and evolutionary history suggest that bacteria and archaea belong to different domains.
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an uncastrated male horse, at least four years of age, is called a
An Uncastrated Male horse of At Least four years old is called a Stallion or Stud.
A mature male horse which is Uncastrated and is capable of Breeding is named as Stallion or Stud.Stallion has a very strong physique due to the presence of testosterone. It shows somewhat aggressive behavior but they also show a social behaviour of forming a group with stallions of all ages or sometimes will live with a harem of female horses.
They are also used in horse racing, horse riding or competitions if proper training is provided. A male horse is usually called a colt and a castrated male horse is called a gelding. When used for Breeding due to its genotypic and phenotypic qualities they are also called as Stud.
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Answer:
An Uncastrated Male horse of At Least four years old is called a Stallion or Stud.
Explanation:
A mature male horse which is Uncastrated and is capable of Breeding is named as Stallion or Stud.Stallion has a very strong physique due to the presence of testosterone. It shows somewhat aggressive behavior but they also show a social behaviour of forming a group with stallions of all ages or sometimes will live with a harem of female horses. They are also used in horse racing, horse riding or competitions if proper training is provided.A male horse is usually called a colt and a castrated male horse is called a gelding.When used for Breeding due to its genotypic and phenotypic qualities they are also called as Stud.
genetic engineering techniques are used to analyze and manipulate dna and rna. describe dna sequencing. explain how scientists can use dna sequencing to determine gene expression.
A. DNA Sequencing is a laboratory procedure that determines the exact sequence of nucleotides or bases in a DNA molecule. The base sequence determines the activities that occur in that organism.
B. Using DNA sequencing, we can determine the exact sequence of nucleotides or bases in a DNA fragment, which contains genes/regulatory instructions and so may govern genetic expression in an organism.
Genetic engineering is the use of technology to modify and manipulate an organism's genes. It is a collection of methods used to modify the genetic makeup of cells, including gene transfer inside and beyond species borders, in order to create better or unique creatures. New DNA is created by isolating and copying genetic material of interest using recombinant DNA technologies or by synthesizing DNA artificially.
To transfer this DNA into the host organism, a construct is often built and used. Paul Berg created the first recombinant DNA molecule in 1972 by mixing DNA from the monkey virus SV40 with lambda virus. In addition to adding genes, the method may be used to delete, or "knock out," genes. The new DNA might be introduced at random or to a specified region of the genome.
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When a scientist uses many specific observations to construct a general scientific principle, the scientist is using reasoning.a. Trueb. False
Yes, that is true. Truuuuuuuue
Answer: A
Explanation:
sensory is to motor what ________ is to ________.
The relationship between sensory and motor systems can be compared to the relationship between input and output systems in the human body.
Sensory systems are responsible for receiving and processing information from the external environment, such as touch, sight, sound, and smell. This information is then transformed into neural signals and transmitted to the brain, where it is interpreted and integrated into our perception of the world.
Motor systems, on the other hand, are responsible for executing movements and actions in response to neural commands from the brain. The motor system receives information from the brain, processes it, and then generates a physical response, such as moving a limb or speaking.
In this way, the sensory and motor systems can be thought of as complementary systems, working together to allow us to perceive and interact with our environment. The sensory system acts as an input system, receiving information from the environment, while the motor system acts as an output system, generating actions in response to the input from the brain.
Thus, the sensory system can be said to be to the motor system what input is to output.
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Huda thinks that a fire was started by someone using a Molotov cocktail. What evidence would MOST likely lead her to make this conclusion?
A. a bullet casing
B.
pieces of a glass bottle
C. a gun
D.
dustings of gun powder
Pieces of a glass bottle refer to fragments or shards of broken glass from a bottle.
what is molotov cocktail?A Molotov cocktail is a makeshift incendiary device consisting of a bottle filled with a flammable liquid (usually gasoline) and a piece of cloth serving as a wick. When ignited, the cloth burns and the bottle breaks, spreading the flammable liquid and starting a fire.
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identify the parts of the nervous system that sense and communicate knee soreness so a person knows to stop running and rest. ? o Autonomic o Peripheral o Somatic o Central
The parts of the nervous system that sense and communicate knee soreness so a person knows to stop running and rest is the peripheral nervous system.
The central nervous system and the peripheral nervous system are the two major divisions of the nervous system in humans and other vertebrates.
The brain and spinal cord make up the central nervous system (CNS). The entire information analysis process happens in the CNS.
Sensory neurons and motor neurons are both a part of the peripheral nervous system (PNS), which is made up of neurons and neuronal fragments outside of the central nervous system. Motor neurons transport messages from the CNS while sensory neurons bring signals into the CNS.
The PNS is composed of the autonomic nervous system, which regulates bodily functions automatically, and the sensory-somatic nervous system, which communicates sensory data from the skin, muscles, and sensory organs to the central nervous system and sends motor instructions from the central nervous system to the muscles.
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what are 3 common methods used to determine the number of cells present in a liquid culture?\
The 3 common methods used to determine the number of cells present in liquid culture are Hemocytometer counting Automated cell counters and Spectrophotometry. Determining the number of cells present in liquid culture is important in various fields, biology and medicine.
Hemocytometer counting: Hemocytometer counting is a manual method that involves counting the number of cells in a small defined area. A special glass chamber called a hemocytometer is used to count cells. The chamber has a grid etched on its surface, and cells are placed on it using a sample of the culture. The cells are stained to make them easier to see and count under a microscope. The number of cells in the defined area is then used to calculate the number of cells per millilitre of culture.Automated cell counters: Automated cell counters use electrical impedance or laser-based technologies to count cells. In electrical impedance-based cell counters, an electric current is passed through the cell suspension, and the impedance of the current is used to determine the number of cells present. In laser-based cell counters, cells are passed through a laser beam, and the scattering of the light is used to determine the number of cells. Automated cell counters are faster and more efficient than manual methods and provide more accurate results.Spectrophotometry: Spectrophotometry is a method that uses the measurement of light absorption to determine the number of cells in a liquid culture. The sample is first diluted and then the absorbance of the diluted sample is measured at a specific wavelength using a spectrophotometer. The absorbance of the sample is proportional to the number of cells present. The number of cells can then be calculated using a calibration curve. Spectrophotometry is a quick and simple method to determine the number of cells in a liquid culture, but it is not as accurate as other methods.To learn more about cells here:
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without a plasma membrane what would cells be unable to maintain
The membrane that separates the cell's interior from its external environment is called the plasma membrane. Without a plasma membrane, the cells would be unable to maintain homeostasis
Plasma membranes allow some substances through but not others because they are selectively permeable. The cell would die if the membrane lost this selectivity because it would no longer be able to sustain itself or maintain homeostasis. Certain substances are required by some cells in greater quantities than by others; They must be able to get these things from the extracellular fluids in some way.
The cell may have special mechanisms that ensure transport, or this may occur passively as certain materials move back and forth.
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select the cell counting methods that enable only living cells to be counted. check all that apply
Options A,B,C. These methods involves counting adding trypan blue, a vital stain, to the cell suspension. Live cells will not take up the stain, while dead cells will be stained blue and excluded from the count.
There are several methods that enable the counting of only live cells: This method utilizes a fluorescent dye that penetrates live cells but is excluded by dead cells. Fluorometry measures the fluorescence intensity of the sample, which is directly proportional to the number of live cells. This is a more elaborate method that involves staining counting cells with a combination of dyes that can differentiate between live and dead cells based on cellular counting metabolism. The live cells are then enumerated based on their fluorescence intensity.
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The complete Question is:
select the cell counting methods that enable only living cells to be counted. check all that apply
Fluorometry
Trypan blue exclusion test
Cell viability assay
cell counter
Which of the following statements about the development of ecology in California is false?A. Because of its late statehood, California ecology did not limit itself to the study of pristine ecosystems.B. California's early ecological community was centered in the Sierra Nevada. C. In California, ecology and earth sciences were more strongly integrated than elsewhere.D. California’s early ecological community was centered in the Sierra Nevada.E. None of the above.
The statement that is false is "In California, ecology and earth sciences were more strongly integrated than elsewhere."
Although California has a long history of ecological study and has made significant contributions to the subject, it is untrue to assert that the state has a deeper integration of ecology and earth sciences than other states. A number of variables, such as the availability of financing, the existence of research institutes, and the interests and specialization of individual scientists, influence the growth of ecology and the integration of ecology with earth sciences. It is impossible to generalize about the relative strength of integration in California in comparison to other regions because these factors might vary greatly from region to region and from time to time.
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The renal corpuscle is composed of the glomerulus and _______.
The renal corpuscle is composed of two structures, the glomerulus, and the Bowman's capsule.
What is a renal corpuscle composed of?
The renal corpuscle comprises the glomerulus, a tuft of blood capillaries supplied by an afferent and an efferent, and an efferent arteriole that invaginates and invests itself in the inner (visceral) layer of Bowman's capsule.
What are the two components of the renal corpuscle?
The renal corpuscle is responsible for the filtration of the plasma. It contains two structures: the glomerulus and Bowman's capsule. The glomerulus is a cluster of capillary loops enclosed by Bowman's capsule, which is part of the renal tubule.
Where are the renal corpuscles?
The renal corpuscles are located in the cortex. The medulla is made primarily of collecting ducts. As a result, you can identify the cortex and the medulla based on the presence or absence of the renal corpuscles.
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What cell is unicellular and lacks a nucleus and membrane bound organelles?
site of collecting ducts and loop of henle function
Henle's loop is a long, U-shaped section of the kidney's nephron tubule found in mammals, birds, and reptiles. The recovery of water and sodium chloride from urine is the loop of Henle's main purpose.
This process enables the creation of urine, which is much more concentrated than blood and reduces the amount of water that must be consumed to survive. Henle loops are extremely effective in many species that live in dry habitats like deserts. The thin descending limb, thin ascending limb, and thick ascending limb are the three primary anatomical segments that make up the loop of Henle (sometimes also called the diluting segment).
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You have been hired by the lab coordinator for Biology 205 to create a new, improved cloning scheme to move the GFP gene (green arrow) from plasmid A into plasmid B.
Which enzyme(s) would be most effective to use to subclone GFP from plasmid A into plasmid B? Explain your choice. (3 Marks)
The document uploaded in this only refers to question one fo the question.
The mist effective enzyme combination should be BamHl and EcoRl.
What is Cloning?Cloning is defined as the process of producing different organisms with identical or virtually identical DNA by natural or artificial means. Some organisms produce clones by asexual reproduction.
To clone any gene we need to use the same set of restriction enzymes for both donor and receiver plasmids, and 2 different enzymes to cut different ends of the gene of interest This should be done to prevent cloning in the wrong orientation.
When we use HindIII, it will generate cuts in the two ends of the GFP gene in plasmid A and a cutting site on plasmid B, and here cloning may occur in the wrong direction.
Thus, the mist effective enzyme combination should be BamHl and EcoRl.
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What must be present to successfully break down fats during digestion?
To efficiently break down fats during digestion, emulsifier must be present.
'What is emulsifier?'
Any of the many chemical additives that aid in the suspension of one liquid in another, such as the combination of oil and water in margarine, shortening, ice cream, and salad dressing, are known as emulsifiers. Algin, carrageenan, and agar are only a few of the emulsifiers made from algae. Lecithins, like those in egg yolks, are additionally employed as emulsifying agents.
An emulsifying agent's basic structure consists of a hydrophobic component, typically a long-chain fatty acid, and a hydrophilic component that can be charged or uncharged.
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what visual feature sets hyaline cartilage apart from other types of cartilage?
Hyaline cartilage distinguishes itself from other varieties of cartilage visually by having a matrix that seems transparent.
The transparent polyester material used to create Dentacomp Transparent Matrix has been created to make it simple to shape composite fillings. Due to its transparency, the flexible matrix band facilitates light transmission and easy polymerization of the composite. Transparency denotes honesty, openness, and responsibility.
In businesses, organizations, administrations, and communities, transparency is practiced. For instance, in a business relationship, a transparent agent clarifies fees up front so there are no surprises later. Transparent items are those that let all light rays pass through them. Air, water, diamonds, transparent glass, and lenses are a few examples of transparent objects.
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which would most likely produce a mutation that is passed on to offspring?
A gamete with an extra chromosome forming.
what is a gamete ?A gamete is an animal or plant reproductive cell. Animals' male and female gametes are referred to as sperm and ova, respectively. Each ova and sperm cell has only one copy of each chromosome, making them haploid cells. Gametes, which are also referred to as sex cells, are an entity's reproductive cells. These cells carry one copy of each chromosome and are haploid. While female gametes are known as ova or eggs, male gametes are known as sperms. Meiosis is a process that results in the reproductive cells.
What are the types of gametes?An organism's reproductive cells are called gametes. They are additionally known as sex cells. Male gametes are referred to as sperm, whereas female gametes are known as ova or egg cells.
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The one which would most likely produce a mutation that is passed on to offspring are those gamete with an extra chromosome forming.
What is Mutation?This is referred to as a change in the DNA sequence of an organism and it results from errors in DNA replication during cell division.
One of the errors which could occur is the gamete with an extra chromosome forming such as in the case of Klinefelter syndrome which is also known as Klinefelter's, KS or XXY where boys and men are born with an extra X chromosome.
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the brain is able to perform multiple tasks simultaneously. true or false
The statement "the brain is able to perform multiple tasks simultaneously" is true.
The cerebrаl cortex hаndles the brаin's "executive controls." Those controls, divided into two stаges, orgаnize the brаin's tаsks processing.
The first is goаl shifting. This hаppens when you switch your focus from one tаsk to аnother.The second stаge is rule аctivаtion. This turns off the rules (how the brаin completes а given tаsk) for the previous tаsk аnd turns on the rules for the new tаsk.So, when we think we аre multitаsking we аre аctuаlly switching our goаls аnd turning the respective rules on аnd off in rаpid succession. The switches аre fаst (tenths of а second) so we mаy not notice them, but those delаys аnd the loss of focus cаn аdd up.
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In biological molecules carbon nitrogen and oxygen often form covalent bonds with hydrogen.
True: In biological molecules carbon nitrogen and oxygen often form covalent bonds with hydrogen.
Biological macromolecules are the massive molecules required for life that are constructed from smaller organic components. Carbohydrates, lipids, proteins, and nucleic acids are the four main types of biological macromolecules. Each is a vital part of the cell and carries out a variety of tasks. These molecules make up most of a cell's mass when they are all combined. Proteins are specially the biomolecules having carbon, nitrogen, and oxygen in covalent bonding with hydrogen.
Organic means that biological macromolecules include carbon (with some exceptions, like carbon dioxide). They could also include tiny amounts of hydrogen, oxygen, nitrogen, phosphorus, Sulphur, and other elements. The monomers that make up proteins are amino acids. The basic building block of every amino acid is a core carbon atom connected to an amino group (-NH2), a carboxyl group (-COOH), and a hydrogen atom.
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the chinese believe that certain types of food hold different meanings and that the food can bring them good or bad fortune. do you agree with this belief? explain your reasoning.
I agree with this belief to some extent. Chinese culture is based on the idea of balance and harmony, and food is often seen as a way to maintain this balance.
Different types of food are associated with different meanings and symbolism, such as good luck, prosperity, fertility, and health. Eating particular types of food can be a way of sending a message of good fortune, which can have a positive effect on one's life.
However, I don't believe that all types of food have the same level of power in bringing good or bad fortune. Ultimately, one's destiny is determined by the choices and actions one takes, and not just by what one eats.
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Place the following traits in the correct category based on whether they are characteristic of the sporophyte or gametophyte generation. Haploid Gametophyte Sporophytes Produces spores Produced from spores Has cells that undergo meiosis Diploid Produces gametes Dominant stage in flowering plants Dominant stage in mosses Produced from fused gametes Has cells incapable of meiosis
The right order of events in the life cycle of bryophytes is the formation of the gametophyte, the formation of the gametes, fertilisation, the formation of the embryo, and the formation of the spores.
Haploid spores produced by meiosis within the sporophyte's capsule are liberated and eventually germinate to produce a male or female gametophyte. The spores are part of the gametophyte generation because they grow to become both male and female gametophytes. Depending on the type of plant, the generations alternate. The gametophyte makes up the main plant in bryophytes, where the dominant generation is haploid. The dominant generation of tracheophytes is diploid, and the sporophyte makes up the bulk of the plant.
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cells typically have a high ceoncentration of solutes in them. what would happen to a cell placed in pure water?
If a cell is placed in pure water, it will undergo osmosis and may swell or burst.
Osmosis is the diffusion of water molecules from an area of high concentration to an area of low concentration through a selectively permeable membrane. If a cell with a high concentration of solutes is placed in pure water, the water molecules will move into the cell, causing it to swell. If the cell continues to take in water, it may burst due to the pressure increase inside the cell.
On the other hand, if the cell is placed in a solution with a high concentration of solutes, water will move out of the cell, causing it to shrink. The balance between the concentration of water inside and outside the cell is critical for the cell's normal function and survival. An excessive increase or decrease in the water concentration can lead to the cell's death.
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Cells differentiate and become specialized in unicellular organisms. True or false?.
Answer:
True
Explanation:
You have different types of cells that do different things in your body.
Answer:
False
Explanation:
Unicellular organisms are made up of a single cell. That one cell has to preform all jobs. There aren’t multiple cells that are able to differentiate, there’s only one cell.
what are the different parts of a gene and how does each part participate in the process of transcription?
The different parts of a gene and each part participates in the transcription process are the promoter, the coding region, and the termination sequences that play a role from start to finish as well as the formation of the RNA in transcription.
Genes are genetic material contained in loci and fill chromosomes. The genetic material determines the characteristics of living things that can be passed on to their offspring.
Transcription is the process of a series of genetic expressions that occur in the nucleus of eukaryotic cells. In this process, the copying of the genetic code from the DNA template (template) into the messenger RNA (mRNA) occurs in the cell nucleus. The gene has three regions that play a role in the transcription process, namely the promoter, the coding region, and the termination sequence. The promoter is located near the transcription start site of a gene which controls the transcription rate of the gene while the termination sequences indicates the end of a gene which controls the mRNA degradation rate. While the coding region contains protein building information that is used as a template to produce RNA molecules in the transcription process.
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Kettle sours can be produced by adding food grade lactic acid in the kettleTRUE OR FALSE
It's true that a "kettle sour" was created by the brewer adding lactobacillus, the main probiotic bacteria used to sour beer, to the wort before the boil.
This is a very new technique for souring beer that is incredibly rapid and gives the brewer a lot of control over the degree of sourness.
The process of making beer sour is known as "kettle souring," not a specific type of beer.
This method, which works for the majority of varieties, is quick and flexible, making it perfect for brewers who want to experiment with sour variations of various beer genres.
Kettle sours are produced by a controlled infection of lactobacillus that is killed off in the boil once the beer has attained the optimum amount of sourness for the brewer.
This process allows yeasts and bacteria to gently, naturally modify their flavor. Consider kettle souring as the "nurture" to Belgian spontaneous-fermentation sours' "nature."
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many of the first prokaryotes to be cultured in a scientific lab were human or animal pathogens. why would these species be more readily cultured than non-pathogenic prokaryotes?
Compared to non-pathogenic prokaryotes, which may have evolved to live in natural conditions that are far more challenging to recreate in a lab.
Pathogenic prokaryotes are frequently better adapted to survive in human- or animal-made environments, such as laboratory cultures.
Additionally, pathogenic prokaryotes are typically simpler to identify in clinical samples, increasing the likelihood that they may be recognised and cultivated in a lab environment.
Non-pathogenic organisms are the ones that do not infect, harm, or kill other creatures. The terminology is often used to refer to germs.
It denotes a bacterium's ability to not make people sick. These organisms wouldn't harm other people..
Non-disease producing bacteria that typically live on the surface of vertebrates and invertebrates.
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during prophase i replicated homologous chromosomes pair up and undergo synapsis. what testable question is generated regarding synapsis and genetic variability by figure 1 ? responses is the distance between two gene loci related to crossover rate? is the distance between two gene loci related to crossover rate? does crossing over occur more often in some chromosomes than in others? does crossing over occur more often in some chromosomes than in others? is crossing over inhibited by methylation? is crossing over inhibited by methylation? is crossing over promoted by methylation?
During prophase I replicated homologous chromosomes, paired up and undergo synapsis. The testable question that is generated regarding synapsis and genetic variability by figure 1. The correct option is Option A. Responses is the distance between two gene loci related to crossover rate?
Generally the distance between the two genes is directly proportional to the strength of crossing over. When the distance between the genes increases the probability of crossing over increases as the separation between two gene is more therefore it is easier to crossover. Again it is said that the homologous chromosomes had undergone synapsis. Therefore the question of option A is most relevant. Crossing over is said to be a cellular process that happens during meiosis when chromosomes of the same type are lined up. When two chromosomes from two parents that is one from mother and the other from father, parts of the chromosome can be switched. The two chromosomes usually contain the same genes, but may have different forms of the genes.
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Restriction Fragment Length Polymorphism (RFLP) allows a small sample of DNA to be amplified through replication.
A. True
B. False
Answer:
False
Explanation:
Answer:true
Explanation:because of DNA
the term for the same (or similar) features arising in separate taxa not descended from a single close ancestor is:
The term for the same (or similar) features arising in separate taxa not descended from a single close ancestor is called evolutionary convergence.
Also called as convergent evolution. It is the independently occurring evolution of the same characteristics (such as body shape or behavior) among species or lineages that are unrelated or just distantly related and that often occupy the same ecological niches or locations.
Convergent evolution describes the development of similar or "analogous" structures across separate lineages that cannot be explained by the existence of a common ancestor.
A phenotypic resemblance may exist, in which case the lineages share the visible feature but have different underlying DNA sequences.
When species occupy comparable ecological niches and respond similarly to similar selective pressures, this is known as convergence in evolution.
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