An experiment on S. patens and T. angustifolia demonstrates how salinity and competition impact plant dispersal in an estuary.
According to observations made on the ground, Typha angustifolia, or cattail, predominates in freshwater marshes, whereas Spartina patens, or salt marsh hay, is the main plant in salt marshes.The saltmeadow cordgrass (S. patens), which is native to the east and Gulf coasts of North America, has been introduced to the west coast. It is a climax species found in high marsh environments, most specifically in the area to the seaward of the high-water line.T. angustifolia is supported by various wetlands, reservoirs, ponds, canals for navigation, and natural freshwater drainage and irrigation systems. Due of its clonal growth habit and strong competitiveness, it frequently forms monodominant stands in favorable growth environments.Learn more about the halophytes with the help of the given link:
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Detritivores are consumers that obtain their energy from detritus. How many joules of energy are potentially available to detritivores in the ecosystem represented in Figure 55.11 ?
Theorotically, the energy available to detritivores at a steady state according to the image shown is 11110J.
A heterotrophic creature known as a detritivore gets its sustenance by consuming detritus. Detritus refers to the organic debris including dead plant and animal stuff. Coprophagy is a feeding strategy used by detritivores that involves ingesting feces in order to get food. Detritivores include invertebrate insects such as flies, beetles, butterflies and mites as well as soil-dwelling woodlice, earthworms and millipedes along with mollusks such as snails and slugs.
Although the words "detritivore" and "decomposer" are sometimes used interchangeably, they have different meanings. Detritivores are essentially a subgroup of decomposers. Real decomposers, such as fungi, bacteria, or protists, adopt saprotrophic feeding, in which they receive nutrients by extracellular digestion instead of oral ingestion. This is in contrast to detritivores.
Detritivores and decomposers break down all of the dead and decaying matter in the ecosystem. As a result, they considerably contribute to the cycling of nutrients and are an essential part of the majority of biogeochemical cycles, including the nitrogen, phosphorus and carbon cycles.
Detritivores are present at all trophic levels in an ecosystem because they consume materials produced by primary producers as well as by herbivores and carnivores. Detritivores are an essential part of the ecosystem energy cycle because they typically take energy from secondary consumers in addition to eating energy from other species.
The total net energy generation shown in the figure is 10000 + 1000 + 100 + 10 = 11110J.
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one of the primary benefits of a survey is that they . a. can generate cause-and-effect conclusions b. allow efficient gathering of unobserv
One of the primary benefits of a survey is that they allow efficient gathering of unobservable. Therefore, the correct option is (B)
A survey is often conducted by letting the subjects fill out a set of questions on their own, normally without the general oversight of the researchers. Because of this, it really shows that acquiring necessary information has become increasingly highly efficient because it can usually be done with a very small amount of work and a huge number of people.
A survey is a list of questions used in human subject research to elicit valuable data from a particular group. Surveys may be conducted over the phone, by mail, online, at busy intersections, and even in shopping malls.
Finding answers to important questions is the goal of surveys. They are typically used to determine people's opinions about a subject and the reasons behind their opinions. Depending on what you intend to do with the information you gather, surveys can have a variety of structures.
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An exocrine gland secretes its product into localized capillaries while an endocrine gland secretes its product into ducts. True or false
It is false that an exocrine gland secretes its product into localized capillaries while an endocrine gland secretes its product into ducts.
What are exocrine and endocrine glands?Exocrine glands are any of various glands which secrete via a duct, typically into the digestive tract or onto the skin.
On the other hand, an endocrine gland is any of various glands that secrete hormones directly into the bloodstream or lymph and not through a duct.
This means that the major difference between an endocrine and exocrine gland is that the former operates ductless while the latter operates with ducts.
Therefore, it is false that an exocrine gland secretes its product into localized capillaries while an endocrine gland secretes its product into ducts.
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According to the research, the correct option is false. An exocrine gland doesn't secrete its product into localized capillaries while an endocrine gland secretes its product into ducts.
What is an exocrine gland?They are secretory glands that release substances such as sweat, mucus, tears, saliva and digestive juices outside the body directly through ducts.
In this sense, these ducts are located on the epithelial surface, external or internal, from which they originated and some examples of these glands are the pancreas and the sweat or sebaceous glands of the skin.
Therefore, we can conclude that according to the research, the correct option is false. An exocrine gland doesn't secrete its product into localized capillaries while an endocrine gland secretes its product into ducts.
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HELP! Due yesterday;-;
The experiment shows that the brand of the energy drink is the independent variable.
What is independent variable?The independent variable is the variable that is changed during the experiment. This is the variable that is manipulated in the course of the study and it results to changes in the independent variable.
The independent variable is the variable that is being manipulated while the dependent variable is the variable that changes as we change the independent variable. We shall now look critically at the experiment to see the variables involved in the procedure.
1) Considering the experiment, the independent variable is the brand of the energy drink
2) The dependent variable here is the number of packages delivered.
3) The possible constant is the weight and size of the packages
4) Water was given to the workers to compare its effect against the energy drink
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EXTENSION On a separate sheet of paper, write a short paragraph describing U.S.
efforts to address environmental issues over the last few decades. In the paragraph,
use at least one vocabulary term from each lesson in the chapter.
The Unites States has been doing a lot about environmental protection in the last decade.
What are the efforts of the United states?The United States government via the environmental protection agency has been at the forefront of addressing several environmental issues such as Ozone layer depletion and climate change.
The United States Environmental protection agency has done a lot to update the standards for the amounts of toxic wastes in the environment over the years. There has also been an increase in legislation that aims at improving the environment such as the clean water act.
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Mature bone cells that maintain and monitor protein and mineral content of surround matrix are called:________
Mature bone cells that maintain and monitor the protein and mineral content of the surrounding matrix are called osteocytes.
Osteocytes are mature bone cells, differentiated from osteoblasts which are responsible for keeping the bone matrix. they may synthesize and resorb ruin down the matrix to keep homeostasis. Osteocytes hold bone tissue.
Osteoblasts are bone-forming cells that can be of mesenchymal starting. They synthesize bone matrix and convey a surrounding that promotes bone mineralization. Osteocytes are osteoblasts that must emerge as entrapped in bone. Osteocytes help synthesize and replace wished factors of the matrix via the usage of signaling osteoclasts and osteoblasts to resorb and form new bone.
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Which part of the human brain distinguishes it from the brain of other animals? midbrain hindbrain forebrai
The part of the human brain that distinguishes it from the brain of other animals is forebrain.
Brain is the largest and he most complex organ of the vertebrates, especially humans. It is protected by the skull on the outer side. The brain is divided into two parts: the right hemisphere and the left hemisphere. The brain has three parts: the forebrain, the midbrain and the hindbrain.
The forebrain is the most complex part of human brain. It consists of cerebral cortex that especially separates it from all the other organisms. The cerebral cortex controls the intelligence, thinking ability and language.
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An organism’s niche is determined by its. Which is its physical environment
Answer: An organism’s niche is determined by its , which is it’s physical environment called Habitat.
Explanation: A niche is a part a species perform in the ecosystem. In other words, a niche is how an organism “makes a living.” A niche will add the organism's capacity in the flow of energy within the ecosystem. This includes how the organism generates its energy.
The habitat is the natural area where a species lives. Many circumstances are used to represent a habitat. The common amount of sunlight collected each day, the range of annual warmth, and average yearly rainfall can all represent a habitat.
An organism’s niche is determined by its. Which is its physical environment by its habitat.
What is a habitat?The living area of an organism with easy access to food, water, and shelter is known as the habitat of the organism. Here all the suitable abiotic and biotic conditions meet the requirements of the organism. The animal reproduces only in there natural habitat as it gets suitable mates in the area.
There are four types of habitats freshwater, marine, and coastal habitat. Rivers, lakes, streams, and ponds are a few examples of freshwater habitats. Seas and oceans are the largest marine habitats whereas the area where the coastal line meets the land is the coastal habitat.
Therefore, every organism, animal, and plant has a specific habitat.
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For biologists studying a large flatworm population in the lab, which hardy-weinberg condition is most difficult to meet?.
According to the Hardy-Weinberg principle, the most difficult condition for a biologist studying a large population of flatworm in the lab is no mutation.
An essential population genetics principle known as the Hardy-Weinberg equilibrium states that, in the absence of unfavourable circumstances, the genetic variation in a population should remain constant from generation to generation.
A mathematical model called the Hardy-Weinberg principle postulates that, given specific circumstances, the genotype and allele frequencies in a population of sexually reproducing individuals would remain constant throughout generations. This principle requires that evolution be virtually halted.
Hardy-Weinberg equation:
[tex]p^2+2pq+q^2=1\\[/tex]
where,
[tex]p^2[/tex] = dominant homozygous frequency (AA)
[tex]2pq[/tex] = heterozygous frequency (Aa)
[tex]q^2[/tex] = recessive homozygous frequency (aa)
The following requirements must be met for the Hardy-Weinberg equilibrium to persist:
• no mutation
• no gene flow
• large population size
• random mating
• no natural selection.
Deviations from any of the Hardy-Weinberg equilibrium's five fundamental underlying requirements can cause it to disrupt.
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The four zones of a lake or characterized by the amount of sunlight they received. What differences in plants, animals, or properties are observed from these four zones
Each pond or lake contains a variety of zones that divide the water column from top to bottom and side to side. The Littoral Zone, Limnetic Zone, Profundal Zone, Euphotic Zone, and Benthic Zone are among these zones.
The Limnetic Zone
The area of the lake that is warmest and receives the most sunshine is the upper water layer, also known as the euphotic zone.
The zone ends when sunlight can no longer pass through the lake. Due to the presence of sunlight, aquatic plants flourish here, just like in the littoral zone.An area of a lake or ocean known as the aphotic zone receives little or no sunlight.Formally, it is described as the depths to which less than 1% of sunlight may penetrate.Plankton, or floating microscopic organisms, and nekton, or actively swimming organisms, make up the majority of life in the limnetic zone. Planktonic algae are the producers in this ecosystem. Primary consumers such as minute crustaceans and rotifers, also known as zooplankton, can be found in the limnetic zone.Learn more about the lake ecosystem here:
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are viruses and bacteria single celled organisms?
Answer:
Viruses are not cellular organisms they are more like groups of genetic materials and proteins, this is unlike bacteria which are single-celled microbes that do not contain a nucleus.
Suppose you are studying a cell's response to a particular hormone. You observe that the cell produces the same response to the hormone whether or not the cell is treated with a chemical that blocks transcription. What can you surmise about the hormone and its receptor?
We can surmise about the hormone and its receptor that It possesses a cell-surface receptor and is water soluble. These receptors can produce visible changes in cells without hormone-dependent gene transcription, in contrast to those of lipid-soluble hormones.
The sensitivity of a cell to a hormone and the cellular response that results depend on the number of receptors that react to that hormone. Additionally, the quantity of hormone receptors that activate cells might alter throughout time, increasing or decreasing the sensitivity of the cells.Because it has the hormone's receptors, a target cell reacts to the hormone. In other words, a cell is a target cell for a hormone if it has functional receptors for that hormone, and a cell cannot be directly influenced by a hormone if it does not have a functioning receptor.To know more about receptors visit:
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Why are action potentials usually conducted in one direction? a. Ions can flow along the axon in only one direction. b. The brief refractory period prevents reopening of voltagegated Na⁺ channels. c. The axon hillock has a higher membrane potential than the terminals of the axon. d. Voltage-gated channels for both Na⁺ and K⁺ open in only one direction.
Along an axon, action potentials only go in one direction. Because sodium channels in the neuron are refractory, action potentials can only move in one way along an axon. Thus, option A is correct.
What is the direction of action potential?
Action potentials, however, go one way. This is made possible by the sodium channels' ability to close after activation, known as their refractory period.
This ensures that the action potential moves in a specific direction along the axon.
Accordingly, the action potential can only flow forward because of the influx of potassium, which results in depolarization, and cannot flow backward.
Once the impulse enters the axon, it can no longer travel backward.
Therefore, action potentials usually conducted in one direction.
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Which form of energy is an input for photosynthesis?
A. Light energy
B. Mechanical energy
C. Electrical energy
D. Nuclear energy
Answer:
A. Light Energy
Explanation:
Light energy is a type of wavelength that excites the electron that is in the chlorophyll of photosystems that is required for the formation of energy.
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. Based on indexes such as Shannon diversity, is a community of higher species richness always more diverse than a community of lower species richness? Explain.
Not necessarily if only one or a small number of species dominate the community with many species.
How is a species defined?A group of creatures that can breed with one another in nature and create healthy offspring is referred to as a biological species. A species is an organism's fundamental unit of classification, taxonomic rank, and biodiversity.
What are a species' five defining traits?Species characteristics:
Species members resemble one another more closely than do members of any other species.They have comparable morphological characteristics.To create fertile offspring, they interbreed with other members of their own group.Under normal conditions.They come from the same gene pool.To know more about Species visit:
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What kind of intermolecular forces act between a hydrogen chloride molecule and a dichlorine monoxide molecule?
Dispersion forces are the intermolecular forces that act between a hydrogen chloride molecule and a dichlorine monoxide molecule.
What are dispersion forces?The least powerful intermolecular force is the London dispersion force. When the electrons in two nearby atoms hold positions that cause the atoms to temporarily form dipoles, the consequence is the London dispersion force, a transient attractive attraction.
The term "induced dipole-induced dipole attraction" is frequently used to describe this effect. When the temperature is sufficiently dropped, London forces—attractive forces—cause nonpolar substances to condense into liquids and freeze into solids.
When an atom or molecule's electrons are dispersed asymmetrically around the nucleus, an instantaneous (temporary) dipole can form due to the electrons' continual mobility.
Therefore, dispersion forces are acting between hydrogen chloride and a dichlorine molecule.
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When information was not available for a plant the, herbalist?
Herbalists are those who gather or trade in herbs, particularly those used medicinally. Herbalists look for the underlying cause of sickness.
Based on the signs or diseases a patient explains during the consultation, practitioners will select herbs. Additionally, Herbalists will conduct a clinical examination, looking at specific body parts, and write a unique prescription. Herbalists can provide secondary or primary healthcare, and they typically start by diagnosing the patient based on their medical background. This past contains elements like eating preferences and way of life. With the patient's cooperation, the herbalist would typically develop a herbal strategy to treat the issue after identifying it. This herbal therapy could include a particular form of complementary medicine, like Ayurvedic medicine.
The complete question is :
Herbalist usually treats the illness with medicinal plants. When information was not available for a plant the herbalist works and researches on the plant to find further information about the plant. What is a role of herbalist here?
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Long-term energy storage
O lipids
O protein
O carbohydrates
O nucleic acids
The three domains you learned about in Concept 1.2 can be represented in the tree of life as the three main branches, with three sub branches on the eukaryotic branch being the kingdoms Plantae, Fungi, and Animalia. What if fungi and animals are more closely related to each other than either of these kingdoms is to plants-as recent evidence strongly suggests? Draw a simple branching pattern that symbolizes the proposed relationship between these three eukaryotic kingdoms.
Fungi are more like animals because they have heterotrophs as opposed to Autotrophs , like plants , that make their own food.
What is the relationship between fungi and animals ?Fungi have evolved mutualism with numerous insect. Arthopods depends on the fungs for protection from predators and pathogens.
Animal and plant interactions with fungi
In terms of their place in the food chain, fungi and mammals are most similar. Animals and fungi do not generate food like plants do. Therefore, outside food sources provide a source of energy for both mammals and fungus.
In addition, research published in 1998 by experts suggests that fungus descended from mammals 9 million years after plants. This implies a closer relationship between fungi and plants.
Chitin, a substance also present in fungi and animals, is absent from plants. Chitin makes up the cell walls of fungi as a structural element.
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Prokaryotes do not have what?
are organisms whose cells lack a nucleus and other organelles.
Answer: nucleus membrane-bound organelles
Explanation:
they lack a nucleus, mitochondria, and other advanced cell structures.
The FitnessGram PACER Test is a multistage aerobic capacity test that progressively gets more difficult as it continues.
The test is used to measure a student's aerobic capacity as part of the FitnessGram assessment. Students run back and forth as many times as they can, each lap signaled by a beep sound. The test get progressively faster as it continues until the student reaches their max lap score.
The PACER Test score is combined in the FitnessGram software with scores for muscular strength, endurance, flexibility and body composition to determine whether a student is in the Healthy Fitness Zone™ or the Needs Improvement Zone™.
Describe two types of interspecific interactions that you can observe in this photo. What morphological adaptation can be seen in the species that is at the highest trophic level in this scene?
The types of interspecific interactions present in this photo are parasitism and predatory. In addition, the spider is the species with the highest tropic level and presents camouflage as a morphological adaptation.
What are interspecific interactions?They are interactions between living beings.They are interactions between living beings of different species.They are harmonic or disharmonic interactions.The interaction shown in the photo is of the disharmonious type and occurs between a spider, a flower, and a bee. The interaction between the spider and the bee is called predatory because the spider is feeding on the bee. On the other hand, the interaction between the spider and the flower is called parasitism, since the spider is using the flower's resources and harming it by not allowing pollination.
In addition, we can see that the spider is camouflaged when it is on top of the flower, not allowing its free visualization while protecting itself from predators and attracting pollinating insects.
Finally, we can say that the spider is the highest tropic of the food chain in this image since it is the only predator we can see.
The image to which your question refers is attached.
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This diagram represents levels of organization within a multicellular
organism. The level represented by X is a
Organism
X
Organelle
Water
Hydrogen)
The smallest unit is the cell; tissues are made up of groups of similar cells; organs are composed of groups of various tissues; organ systems are composed of groups of organs, and multicellular organisms are made up of these components.
Cells, tissues, and organs are lower levels of organization in multicellular organisms. Organ systems and creatures come next after these. Since unicellular creatures only have one cell and no further tissue or levels, these levels are absent in them.
What constitutes a multicellular organism's primary level of organization?Atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism are the main levels of organization in the body, going from the simplest to the most complex.
Multicellular organisms need levels of organization because their cells are divided into groups that perform functions like respiration, reproduction, digestion, cardiovascular function, and other metabolism functions.
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Which additional muscles are involved in increasing the size of the thoracic cage during forced inspiration after heavy exercise?
During inspiration the diaphragm and the external intercostal muscles tighten, causing an expansion in the thoracic cavity volume. The squeeze of the diaphragm accounts for approximately 75% of the air conditioning during normal breathing.
Which muscles are utilized when inspiration is forced?
The primary inspiratory muscles are the diaphragm and exterior intercostals.
What muscles promote the thoracic cage?
The External Intercostal Muscles Develop the Thoracic Cage by Elevating and Extending the Sternum. The external intercostal muscles develop on the inferior surfaces of the proximal parts of the ribs and insert into the best and distal parts of the next lower rib.
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Given what you know about the human body, what do you think could account for the high percentage of oxygen (65.0%)?
The human body breathes in oxygen constantly, and oxygen in the blood and tissues makeup a large percentage of body mass.
Why does the human body have such a high proportion of carbon?Carbon is the major one. Without carbon, life on earth would not be conceivable. Almost everything in your body, including carbohydrates, proteins, lipids, DNA, and muscle tissue, is primarily made of carbon. The electron arrangement of each individual atom in carbon is what makes it such a unique element.
Oxygen is the most common element in the human body , comprising approx 65% of body mass. Most of the Oxygen present in found in the form of water.
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he passage suggests that glucose release from glycogen stores raises the osmotic pressure of body fluids and dehydrates cells protecting them from freezing. the glucose acts as an antifreeze, lowering the freezing po
Answer:
c
Explanation:
What causes Down syndrome?
Explanation:
Babies with Down syndrome have an extra copy of one of these chromosomes(trisomy),so basically it is problems with chromosomes-simply
pharmacological inhibition of gut-derived serotonin synthesis is a potential bone anabolic treatment for osteoporosis
Osteoporosis is the disease of the low bone mass and most often caused by the increase in the bone resorption that is not in sufficiently compensated for by the corresponding increase in the bone formation. As result gut-derived serotonin (GDS) inhibits the bone formation, we can asked whether hampering its is biosynthesis that could treat the osteoporosis through the anabolic mechanism (that is, by increasing bone formation).
We can synthesized and used the LP533401, a small of molecule inhibitor of the tryptophan hydroxylase-1 (Tph-1), the initial enzyme in the GDS biosynthesis. or the Oral administration of this small molecule once daily for up to the six weeks that acts as prophylactically or therapeutically, in the dose-dependent manner, to treat the osteoporosis in the ovariectomized the rodents because of an isolated increase in the bone formation. These results that provide a proof of the principle that have inhibiting the GDS biosynthesis that could become a new anabolic and treatment for osteoporosis.
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in the 1930s researchers found that after lesioning the amygdala on borth sides of the brain in monkeys, the monkeys no longer
The researchers in the 1930s discovered that when a certain region of a monkey's brain was destroyed, the animal lost its fearfulness. They approached snakes, starting playing with their hissing tongues and swinging them around like sticks. The amygdala is typically believed to be the central component of a brain system for processing scary and the frightful stimuli.
Including threat recognition and activation of appropriate fear-related responses in response to dangerous or threatening stimuli . Alternately from the irritative lesions of temporal lobe epilepsy, destructive lesions such amygdala ablation have an impact. The amygdala damage results in tameness in animals.
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Which of the following statements about environmental changes is true?
OPTIONS
Environmental changes always happen very quickly.
Environmental changes cause instant changes in different species.
Environmental changes cause genetic mutations.
Environmental changes can make a genetic mutation more desirable.
The statement indicating that 'environmental changes may likely cause different genetic mutations' is likely true about environmental changes (Option 3 is correct).
What is the relationship between environmental changes and mutations?The association between environmental changes and genetic mutations is due that environmental factors such as excessive temperature or light conditions, for example, may cause stress on the organism, and therefore they are triggers of genetic mutations.
Mutations are the consequence of the alteration in the genetic material that forms the genome of the cells (either gametic germinal cells or somatic cells) of an organism and these changes depend on the homeostatic control (state of internal equilibrium) in which the organism lives.
In conclusion, the statement indicating that 'environmental changes may likely cause different genetic mutations' is likely true about environmental changes (Option 3 is correct).
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dolphins have a diploid number of 44 chromosomes. how many different ways can their chromosome pairs line up at meiosis i?
Each pair of homologous chromosomes can align in two ways. The number of ways in which the 22 chromosome pairs line up is = 2ⁿ = 2²² = 4,194,304 ways.
What is the random alignment of homologous chromosomes?The random lining of homologous chromosomes (metaphase 1) is one of the three mechanisms involved in genetic variation, together with Crossing-over and random fertilization.
Gamete formation involves the random and independent segregation of the alleles.
The random arrangement of tetrads in the equatorial plane is different in every cell going through the meiosis process. There is no equal alinement between two cells.
Each homologous chromosome can orientate in two different ways, facing one of the poles to which it will migrate, or the other (independent separation of homologous chromosomes). This random arrangement in the equatorial plane introduces variation into the gametes.
This separation generates different chromosomal combinations in the daughter cells. There are two alternatives per homologous pair.
The number of different random alignments of the homologous chromosomes equals the number of gametes with different combinations, which is 2ⁿ, where n = number of homologous pairs.
In the exposed example
2n = 44n = 22Each pair of homologous chromosomes can align in two ways.
The number of ways in which the 22 chromosome pairs line up is = 2ⁿ = 2²² = 4,194,304 ways.
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