Answer:
D
Explanation:
Since the temperature is colder at a higher altitide you can use that knowledge to think about how high these places are relative to eachother. You can then take the highest one for your answer
Which most closely describes plant tissue culture?
Group of answer choices
The process of widening stems and roots.
Growing plants in an artificial, sterile environment.
The process through which a plant grows from an embryo inside the seed.
A process that transports minerals into the roots of a plant.
Flag question: Question 17
The statement which most closely describes plant tissue culture is growing plants in an artificial, sterile environment.
What are plant tissue culture?Plant tissue culture simply refers to the collection and techniques used to maintain or grow plant cells, tissues or organs under sterile conditions on a nutrient culture medium.
So therefore, the statement which most closely describes plant tissue culture is growing plants in an artificial, sterile environment.
One significance of plant tissue culture is that it may be used for genetic modification of a plant. Itcan also be used to increase its yield.Plant tissue culture finds application widely in the plant sciences and forestrySo therefore, the statement which most closely describes plant tissue culture is growing plants in an artificial, sterile environment
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____________________ syndrome occurs when the tendons of the wrist become inflamed and swollen.
The tendons in your wrist are impacted by the painful ailment known as De Quervain's tenosynovitis. It happens when the two tendons near the base of your thumb swell up. The sheaths (casings) that surround the tendons become inflamed as a result of the swelling. This causes pain and numbness by pressing on adjacent nerves.
The additional symptoms:
Swelling close to the thumb's base. The backs of your thumb and index finger are numb. A sensation of "catching" or "snapping" as you move your thumb. As the tendons move inside the bulging sheaths, there is a squeaking sound.To learn more about tendons click here
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The laetoli footprints provide valuable information about the ____ of early hominins.
Early hominins walked on two legs is the answer.
Laetoli's footprint provides a clear snapshot of early Hominini bipedalism with slightly but significantly different limb postures. These data support the hypothesis that significant evolutionary changes in Hominini bipedalism occurred 36 million years ago.
Laetoli is a prehistoric site in the Enduleni district of the Ngorongoro district in the Arusha region of Tanzania. The site dates from the Pliocene to the Pleistocene and is famous for its Hominini footprints preserved in volcanic ash. The location of Laetoli's footprints is 45 km south of the Olduvai Gorge.
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In eukaryotes, mRNA is transcribed in the _______ and then transported to the cytoplasm for translation
Answer:
Nucleus
Explanation:
This is in reference to the central dogma of biology: DNA --> RNA --> Protein. DNA is replicated and then transcribed into RNA (which is where it becomes mRNA) which is then sent to a ribosome which is then translated and then created into protein.
Another definition of central dogma of biology is:
(transcribed)Transcription --> Translation --> Protein
In erik erikson's theory, adults strive for generativity to achieve a sense of _______.
Immortality is the answer.
Erikson argued that personality develops in a predetermined order through eight stages of psychosocial development from early childhood to adulthood. At each stage, a person experiences a psychosocial crisis that can have a positive or negative impact on personality development.
Erikson's theory was different from many other theories because it addressed lifelong development, including old age. Older people need to look back on their lives and feel fulfilled. Success at this stage leads to feelings of wisdom, and failure leads to regret, suffering, and despair.
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In a hardy-weinberg population with two alleles, a and a, that are in equilibrium, the frequency of the allele a is 0. 3. What is the frequency of individuals that are homozygous for this allele?.
Here, given-
homozygous alleles 'a' have a frequency of 0.3.
Also the alleles are in equilibrium in a Hardy-Weinberg population. The frequency of individuals that are homozygous for this allele are= 0.49.
The Hardy-Weinberg equilibrium can be defined as the principle which states that the variation in the genetic makeup of a population remains constant and unchanged till there are no external interferences, influencing the population.
Calculation-
[tex]p + q = 1\\0.3 + q= 1\\q= 1- 0.3\\\\q= 0.7[/tex]
Then to find the frequency of the individuals homozygous for this allele the following formula needs to be used-
[tex]p^{2} + 2pq + q^{2} =1[/tex]
[tex]p^{2} = dominant homozygous frequency\\2pq= heterozygous frequency\\q^{2} = recessive homozygous frequency\\[/tex]
Thus, the individuals homozygous for the allele can be calculated by [tex]q^{2} = (0.7)^{2} \\= 0.49[/tex]
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In addition to several other factors, the overall risks of environmental chemicals depend on genetically determined variations in the ____ involved in transport, metabolism, and excretion of these chemicals
In addition to several other factors, the overall risks of environmental chemicals depend on genetically determined variations in the proteins involved in the transport, metabolism, and excretion of these chemicals.
Environmental Chemicals
Various chemicals and compounds present in the air, food, soil, water, dust, etc are called environmental chemicals. In humans, there are more than 400 listed environmental chemicals. Most of these chemicals are already present in the environment while the others were manufactured for humans to use. Some chemicals may be harmful to all humans while others may be selectively harmful to certain individuals and they are commonly referred to as allergens. Even though there are many environmental chemicals around a human being, most of them are not harmful.
The risks involved in exposure to chemicals depend on variations in the proteins present in various metabolic functions. If the functions of the proteins are hampered then it will create a cascade of errors that may end up causing serious harm to the person.
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Two strains of e. coli—one of which can turn on its lactase production and one that cannot—are grown together with lactose in the medium. if all other conditions are equal, what will occur?
E.coil bacteria is belong to family of Enterobacteriaceae . Its live in the environment with or without oxygen.They also present in the intestine of healthy person and warm blooded animals.
The quantity of lactate produce by pathogenic E-coli was significantly higher than produced by non -E-coli.These enzymes were produced by lactose but represent by glucose and galactose.
E-coli used as disaccharide lactose as source of metabolic energy.Fermentation of lactose , glucose and galactose using E-coli bacteria.And lactose is produced by bacteria living in the intestinal tract of animals .It is an energy source and E-coli use use glucose as an energy source.
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What type of container is required for transporting low-level radioactive materials, such as protective clothing?
Any shipment of radioactive materials, whether from the government or the private sector, must be carried and packaged in accordance with stringent Federal requirements. These restrictions shield the public, transportation employees, and the environment from radiation exposure.
Adhering to the necessary packing regulations can limit the danger of transporting radioactive items most effectively.Based on these considerations, radioactive material is transported in one of three different types of containers.
Type A packagingType B packagingIndustrial packagingDue to their low radioactivity, industrial packages are used to convey materials that pose a little risk from radiation exposure. These are also referred to as sturdy, secure containers. This container will keep its contents and protect them during routine transportation operations. Materials that might be transported in industrial packaging include smoke detectors, lab samples, and slightly contaminated clothing.
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What helps determine the properties of certain tissues, particularly connective tissues?
Variations in the composition of the extracellular matrix, determines the properties of the connective tissue. For example, if the matrix is calcified, it can form bone or teeth. Specialised forms of extracellular matrix also makes up tendons, cartilage, and the cornea of the eye.
Please tell me if i am wrong. Hope this helped!
The properties of certain tissues, particularly connective tissues, are determined by the extracellular matrix (ECM). The ECM is a network of proteins and other molecules that surrounds and supports the cells in the tissue.
The ECM determines the strength, flexibility, and other properties of the tissue. The ECM is composed of three main types of proteins: collagen, elastin, and glycosaminoglycans.
Collagen is the most abundant protein in the ECM. It is a strong, flexible protein that gives tissues their tensile strength.
Elastin is a protein that gives tissues their elasticity. It is a rubber-like protein that allows tissues to stretch and return to their original shape.
Glycosaminoglycans are long, sugar-like molecules that give tissues their viscosity. They help to keep tissues hydrated and prevent them from sticking to each other.
The ECM is also home to a variety of other molecules, including growth factors, cytokines, and adhesion molecules. These molecules play a role in the development, maintenance, and repair of tissues.
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[OSS.03]The sentences below describe four Earth events.
1. Earthquakes.
2. Volcanic eruption.
3. Interruption in cell phone signals.
4. Interruption in electricity supplied to households.
Which of these events is most likely to happen on Earth during a solar maximum?
A) 1 and 2
B) 1 and 3
C) 2 and 3
D) 3 and 4
Solar maximums are the moments of highest solar activity in a cycle of eleven years. Option D) 3 and 4. Interruption in cell phone signals and in electricity supplied to households.
What is a a solar maximum?A solar maximum is an event of maximum solar activity that occurs in the star during its cycle of eleven years.
During high magnetic events, several new sunspots appear and are visible from the Earth. There is a sharp increase in solar radiation, and solar storms occur, ejecting solar plasm and emitting high quantities of energy that move forward to the Earth.
These electromagnetic radiations and energy emissions can cause severe alterations in the Earth, affecting natural and artificial systems.
Some of them might affect technological systems, communication, and electrical systems.
The interruption in cell phone signals and in electricity supplied to households are the most likely to happen on Earth during a solar maximum.
The correct option is D) 3 and 4
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In the study of Gigord and colleagues using Elderflower orchids, the allele frequencies of yellow and purple flowers varied such that when the yellow allele started to become rare, the reproductive success of purple flowers decreased and the reproductive success of yellow-flowered individuals increased in a process known as _
In the study of Gigord and colleagues using Elderflower orchids, the allele frequencies of yellow and purple flowers varied such that when the yellow allele started to become rare, the reproductive success of purple flowers decreased and the reproductive success of yellow-flowered individuals increased in a process known as frequency-dependent selection.
Frequency-dependent selection is an evolutionary process in which the fitness of a phenotype or genotype is dependent on the frequency of that phenotype or genotype in a particular population.
Positive frequency-dependent selection raises the fitness of a phenotype or genotype as it becomes more prevalent.In the case of negative frequency-dependent selection, the fitness of an increasingly prevalent phenotype or genotype diminishes.In a broader sense, frequency-dependent selection involves biological interactions that make the fitness of an individual dependent on the frequencies of other genotypes or phenotypes within the population.
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Chemical pesticides are used by farmers to kill pests in farms. The long-term use of chemical pesticides has been found to be harmful for the ecosystem. Jerry, a farmer, uses chemical pesticides to protect his crops. In this scenario, the use of chemical pesticides _____.
Chemical pesticides are used by farmers to kill pests in farms. The long-term use of chemical pesticides has been found to be harmful for the ecosystem. Jerry, a farmer, uses chemical pesticides to protect his crops. In this scenario, the use of chemical pesticides is still harmful due to its permanent effects on the ecosystem.
Pesticides are chemical substances that are used to eradicate undesired organisms such as insects, rodents, fungi, and plants (weeds). There are more than a thousand different insecticides in use today. Pesticides are used in agriculture to kill pests that harm crops and in public health to kill disease vectors like mosquitoes.Pesticides have a terrible impact on human health. Pesticides have been shown to have an adverse effect on development and reproduction, as well as to damage the kidneys and liver and disturb the endocrine system.Pesticides, which kill weeds or insects, can be poisonous to a variety of other creatures, such as fish, birds, helpful insects, and non-target plants.learn more about Chemical pesticides here: https://brainly.com/question/12912926
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Question 1: What happens if you casually introduce something through your retine.
Retine is something seen in animal cells that restricts growth and cell division.
What is retina for eyes?The retina contains millions of light-sensitive cells (rods and cones) and other nerve cells that accept and organize visual information. Your retina sends this information to your brain via your optic nerve, enabling you to see.
What causes retina injury?Retinal damage is one of most common ailments of the eyes. The most common causes of retina injury are those related to old age, light damage or trauma. Retinal conditions can damage this vital tissue. They can affect your vision, and some can be severe enough to cause blindness
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What unique ecological attributes do islands generally have? What impacts do exotic species have upon endemic and other species in oceania?
Immunocytochemical distribution of the cannabinoid CB1 receptor in the primate neocortex: A regional and laminar analysis
Analysis:
Delta-9-tetrahydrocannabinol (Delta9-THC) has a substantial influence on higher cognitive processes, and it has been linked to the emergence or worsening of clinical symptoms of schizophrenia.
These activities appear to be mediated through the CB1 receptor, which is the most abundant cannabinoid receptor in the brain.
However, the location of the CB1 receptor in monkey neocortical areas that influence cognitive activities remains unknown.
Using antibodies that selectively target the N- or C-terminus of the CB1 receptor, we studied the immunocytochemical localization of the CB1 receptor in the brains of macaque monkeys and humans.
In monkeys, CB1 immunoreactivity was most strong in axons and boutons. CB1-immunoreactive (IR) axons showed significant variation in density and laminar distribution throughout neocortical areas of the monkey brain.
When compared to main sensory and motor cortices, neocortical association regions such as the prefrontal and cingulate cortices have a greater density and a distinct laminar pattern of CB1-IR axons.
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2. What structure caused rotifers to be called wheel animals or wheel bearers? the foot, the corona ,the brain, the stomach
The name "rotifer" emanated from the Latin term meaning "wheel-bearer"; this refers to the crown of cilia around the mouth of the rotifer. The rapid action of the cilia in some species causes them to seem to whirl like a wheel.
What is Rotifer?The rotifers commonly called wheel animals or wheel animalcules drive up a phylum of microscopic and near-microscopic pseudocoelomate animals.
Some rotifers are free swimming and truly planktonic, others drive by inchworms along a substrate, and some are sessile, living inside tubes or thick holdfasts that are attached to a substrate. Approximately 25 species are colonial either sessile or planktonic. Rotifers are an essential part of the freshwater zooplankton, living in a significant food source and with multiple species also contributing to the deterioration of soil organic issues.To learn more about Rotifer, refer:
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Answer:
The Corona.
Explanation:
Cilia on the Corona is what makes the Rotifer move like a wheel.
During meiosis I, _____________________. Group of answer choices homologous chromosome pairs are separated the chromosome number stays the same four daughter cells are formed sister chromatids are separated
Homologous chromosome pairs are separated
Meiosis 1 refers to the initial stage of meiosis where one parent cell divides into two daughter cells. This stage is where homologous pairs of chromosomes will segregate and separate from each other and move into the two daughter cells which result in the division of the total chromosomal number by half.
What happens during Meiosis 1 ?Meiosis I ends when the chromosomes of each homologous pair arrive at opposing poles of the cell.
The microtubules disintegrate, and a new nuclear membrane forms around each haploid set of chromosomes.The chromosomes uncoil, forming chromatin again, and cytokinesis occurs, forming two non-identical daughter cells.Learn more about Meiosis here:
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Which part of the central nervous system is responsible for coordinating bodily movements such as writing or sewing
The part of the central nervous system that is responsible for coordinating bodily movements such as writing or sewing is cerebellum.
What is central nervous system?
The central nervous system is the processing center of the body and consists of the brain and the spinal cord.
The brain and the spinal cord are protected by three layers of membranes known as meninges.
What is Cerebellum?The cerebellum, also known as the little brain, is responsible for smooth, coordinated voluntary movements.
Thus, the part of the central nervous system that is responsible for coordinating bodily movements such as writing or sewing is cerebellum.
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The advantage to the cell of the gradual oxidation of glucose during cellular respiration compared with its combustion to co2 and h2o in a single step is that?
Advantage of Gradual glucose oxidation releases ATP, the energy currency of the cell systems. Cells are capable of storing small amount of ATP and therefore, gradual oxidation provides with energy supply for a comparably longer duration releasing only small amount of ATP at a time. That gets utilized for cellular activities and gradual glucose oxidation releases more ATP to restore them.
The process of oxidizing glucose includes formation of Catabolic pathway during which a 6 carbon glucose molecule is split into two 3 carbon sugars which are then oxidized and rearranged by a step-wise metabolic process that produces two molecules of pyruvic acid.
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A typical skin cell has 23 pairs of chromosomes or 46 total chromosomes. this type of cell would be considered a _____ cell.
A typical skin cell has 23 pairs of chromosomes or 46 total chromosomes. this type of cell would be considered a diploid cell.
Diploid is a term that refers to the existence of two complete sets of chromosomes within an organism's cells, with each parent providing one chromosome for each pair. Humans are diploid, and most somatic cells contain 23 pairs of chromosomes.
The diploid represents a cell that contains two copies of each chromosome. Almost every cell in the human body has two homologous or similar copies of each chromosome. The only exception is germline cells that later produce gamete or egg and sperm cells.
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Organisms without exonuclease activity would replicate somewhat faster than other organisms, since time would not be spent checking newly synthesized DNA and excising mismatched bases. The mutation rate would also be higher true or false
This is true that The mutation rate would also be higher.
What is mutation?A mutation is a change in the nucleic acid sequence of an organism's, virus's, or extrachromosomal DNA's genome. DNA or RNA can be found in the viral genome.
Environmental elements known as mutagens are what trigger mutations. Radiation, chemicals, and pathogenic agents are examples of mutagens. Mutations may occur naturally spontaneously.
Because it generates a new DNA sequence for a particular gene, the mutation is crucial in the initial stage of evolution because it results in the creation of a new allele. Through intragenic recombination, recombination can also produce a new DNA sequence (a new allele) for a particular gene.
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In just a week, my 7-year old cousin developed 0.6 to 1.0 centimeters pustules as shown in image 1. In the next couple of days, some of the pustules broke and formed shallow erosions covered by an amber-colored crust and the lesions expanded. His 45-year old father developed similar pathology a few days later. Carefully study the images in the assignment to answer the questions.
The result shows that the microorganism is Staphylococcus aureus.
How to explain the microorganism?Blood Agar media shows colonies which means the microbe must be a fastidious one. It allows bacteria to be distinguished by the type of hemolysis they produce. Here in the image, beta hemolysis is depicted.
Gram staining depicts a gram-positive coccus. Gram-positive organisms take up crystal violet dye and are stained purple while gram-negative organisms take up the safranin dye and give pink to red colonies.
Catalase protects the organisms from reactive oxygen species and Coagulase. According to the above results, the microorganism is Staphylococcus aureus.
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Protective membranous coverings that lie between bony coverings and the soft tissues of the cns are called?
Protective membranous coverings that lie between bony coverings and the soft tissues of the cns are called the meninges.
What are the brain meninges?The brain meninges are the three protective membranous thin layers of tissue that cover and protect the brain and spinal cord of the nervous system.
These meninges are:
The dura mater: They are the tough and inflexible outermost of the three layers of the meninges.Arachnoid mater: The middle layer of the meninges. A membrane that protects the brain and spinal cord below the dura mater and above the subarachnoid space and the pia mater.Pia mater: The innermost of the meninges, the membranes that surround the brain and spinal cord.So therefore, the protective membranous coverings that lie between bony coverings and the soft tissues of the cns are called the meninges
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Shakers, homogenizers, sonicators, blenders, centrifuges and cell sorters are examples of equipment that may create an aerosol risk if used with biohazards.
It is true that shakers, homogenizers, sonicators, blenders, centrifuges and cell sorters are examples of equipment that may create an aerosol risk if used with biohazards.
What are biohazards?The term biohazards has to do with those substances that are capable of causing biological damage. A typical example of a biological hazard is a blood sample or a culture that contains microorganism. These materials are able to spread infection from person to person and from place to place as fast as possible if they are not properly handed in the accurate and professional way that they ought to be handled.
As such, it is very risky for a person to make use of equipment such as shakers, homogenizers, sonicators, blenders, centrifuges and cell sorters are examples of equipment that may create an aerosol risk because they may lead to a wider spread of these biohazards and mass infection of people.
As such, it is a true statement that; "shakers, homogenizers, sonicators, blenders, centrifuges and cell sorters are examples of equipment that may create an aerosol risk if used with biohazards."
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Nicotine is a stimulant, a drug that decreases the action of the central nervous system, the heart, and other organs. Nicotine is a stimulant, a drug that decreases the action of the central nervous system, the heart, and other organs. True False
False. Nicotine is a stimulant, a drug that increases the action of the central nervous system, the heart, and other organs.
How nicotine affects?Nicotine is categorized as a stimulant, a substance that heightens the activity of the heart, the central nervous system, and other organs. Nicotine causes heart disease and stroke by raising blood pressure and heart rate. Once addicted, individuals require increasing amounts of cigarettes to quell their nicotine addiction.Nicotine both stimulates and depresses the central nervous system.The hormone adrenaline is first released by nicotine, which further activates the neural system and contributes to the "kick" of the drug's feelings of pleasure and, over time, addiction.Body releases epinephrine when you smoke. stimulates the sympathetic nervous system, which causes shallow breathing and fast breathing while raising blood pressure and heart rate. The mimicked neurotransmitter by nicotine. It involved in memory and learning, and it strengthens the connections between different neuronal networks.Learn more about nervous system here:
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1. Which type of fungi fungi decompose dead matter?
Oparasitic
Osymbiotic
Oheterotrophic
Osaprophytic
Answer:
D.) saprophytic
Explanation:
Saprophytic fungi break down dead matter by releasing enzymes. This allows for the matter to be taken up by the fungi as a food source.
When transporting donated platelet units, what is the maximum amount of time that agitation of platelets can be stopped for
24 hours is the maximum amount of time that agitation of platelets can be stopped.
What are platelets?Platelets are pieces of very large cells in the bone marrow called megakaryocytes. They aid in the formation of blood clots that help wounds heal and to slow or stop bleeding. It can be problematic to have platelets that are too many, too few, or aren't functioning properly.
Platelets' main job is to stop and prevent bleeding. The body sends signals to platelets that direct them to the affected location when a blood artery is damaged. Adults typically have between 150,000 and 450,000 platelets per microliter of blood, which is considered normal. Less than 150,000 platelets per microliter indicate a low platelet count. People with thrombocytopenia have low platelet levels. We can bleed heavily and bruise easily if our platelet counts are low.
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What is the visceral mass that every mollusk has
The visceral mass that every mollusk has are internal organs, digestive tract, paired kidneys and reproductive organs
What are invertebrates?Invertebrates are animals which do not have backbone.
Some invertebrates phyla include:
PoriferaCoelentrata/CnidarianAnnelidaPlatyhelminthes e.t.cSo therefore, the visceral mass that every mollusk posses are the internal organs, digestive tract, paired kidneys and reproductive organs
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There are 3 possible genotypes: NN, MN, or MM. In a group of 500 people, the frequency of genotype NN is 40%. How many individuals would you expect to have the MN genotype
235 are the Individual numbers that would expect to have the MN type of genotype.
There are two equations necessary according to Hardy-Weinberg Equilibrium:-
p + q = 1
p² + 2pq + q² = 1
Let,
NN= p
NM=2pq
MM=q
So, according to the question, the frequency of genotype NN is 40%
40% of 500 = [tex]\frac{500*40}{100} = 200[/tex] Numbers of individuals
Frequency of individuals p = [tex]\frac{Numbers of individuals}{Total populations}[/tex] = [tex]\frac{200}{400} = 0.4[/tex]
Find p² by taking the square root of p.
√(p) = √(0.4)
= 0.632
So, pp + qq = 1
qq = 1 - pp = 1 - 0.63
q = 0.37
The allele frequencies in the population are known, now finding the frequency of heterozygous genotype.
By Multiplying 2 × p ×q to get heterozygous genotype
2pq = 2 × 0.63 × 0.37` = 0.47
2pq = 0.47
So, 2pq × total population = 0.47 × 500 = 235, NM genotype.
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