The model of succession that best explains the problem at hand Is the Tolerance model of succession.
In the problem, we have been told that the plant kind of inhibits the freshly attained site and then flourishes which makes it seem like the facilitation model. But we have also been told that the plant is soon replaced by other plants that are most suitable to live on that site.
The tolerance model is the proper explanation for this as it states that all species are capable of establishing themselves but only the ones that have a bigger population become dominant. This proves that the example in question is an example of the Tolerance model.
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post-translational control refers to:
The regulation of gene expression after transcription is referred to as post-translational control.
The control of gene expression at the RNA level is known as post-transcriptional regulation. It happens after the RNA polymerase has attached to the promoter of the gene and is synthesizing the nucleotide sequence. The control of active protein levels is referred to as post-translational regulation. There are various types. It is accomplished through either reversible events (posttranslational modifications such as phosphorylation or sequestration) or irreversible events.
Furthermore, the human proteome is dynamic, changing in response to a variety of stimuli, and post-translational modifications are frequently used to regulate cellular activity. PTMs are most commonly mediated by enzymatic activity and occur at distinct amino acid side chains or peptide linkages.
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Fossils present in ______ layers of rock are older, according to the principle of superposition.
According to the superposition, principle fossils are present in sedimentary layers which are deposited sequentially.
What is the principle of superposition?According to the concept of superposition, sedimentary layers are deposited sequentially, and the layers at the bottom are older than the layers at the top unless the entire sequence has been flipped over by tectonic processes.
Geologists may connect rock layers from throughout the world by using the Law of Superposition, which stipulates that given an undisturbed horizontal succession of rocks,
Therefore the oldest rock layers will be on the bottom and increasingly younger rocks will be on top of them.
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what happens when a number of organisms in an environment is higher than the carrying capacity
When the number of organisms in an environment is higher than the carrying capacity, the population most probably will decrease.
What is the carrying capacity?
The carrying capacity of an ecosystem is described as the maximum number of individuals that can be supported by a habitat. Every ecosystem has a fixed carrying capacity. The carrying capacity of any habitat primarily depends on two factors which is highlighted below:
The Food to eat.The space to live.If the number of organisms in an environment is higher than the carrying capacity, they feel the scarcity or limitation of food to eat and space to live, this creates more competition between the members of the same or different species which may lead to fighting for survival and death of the weaker organism.
We can conclude that any organism that has favorable variations of relative fitness will survive, and the rest will be eliminated by a habitat.
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Priya, an 8-year old, is experiencing a major growth spurt. This past year, she has grown 3 inches in height. Which phase of puberty is priya most likely experiencing?.
Priya is in adrenarche phase of puberty.
Adrenarche is a normal physiological increase in androgen production in the adrenal glands that causes pubic and armpit hair growth, increased oiliness of the skin and hair, adult body odor, and mild acne.
Adrenarche is another developmental stage that usually occurs at least two years before puberty.
Puberty is the process of physical changes in which a child's body matures into that of an adult capable of sexual reproduction. It is caused by hormonal signals from the brain to the gonads and testicles in boys and in ovaries in girls.
You can start from 9 years old. Puberty is a process that takes several years. Most girls hit puberty by the time she's 14. Most boys finish puberty by the age of 15 or he is 16.
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Explain how plants respond to a light source, usually the Sun. What is occurring inside the plant, and what hormone is involved?
Answer:
Plants also exhibit phototropism, or growing toward a light source. This response is controlled by a plant growth hormone called auxin. As shown in Figure below, auxin stimulate s cell s on the dark side of a plant to grow longer. This causes the plant to bend toward the light.
Explanation:
phospholipids containing 2 hydrophobic tails spontaneously aggregate to form micelle when suspended in aqueous solution. question 3 options: true false
The given statement is incorrect. A phospholipid molecule's three-carbon glycerol backbone has two fatty acid molecules attached to carbons 1 and 2, and the third carbon has a phosphate-containing group.
What is phospholipid molecule?Phospholipids, which are amphiphilic compounds, contain both hydrophobic fatty acid chains and hydrophilic moieties. They are the primary components of cell membranes and are found in all living things. There are several phospholipid classes in nature, each with a different polar moiety. Their assembly is driven by the hydrophobic effect, which causes the lipids to naturally organize themselves in a way that reduces the hydrophobic surface area exposed to water.Because phospholipids' fatty acid tails are poorly soluble in water, they naturally form bilayers in aqueous solutions. The hydrophobic tails are buried inside the membrane, while the polar head groups are exposed and in contact with water on both sides.To learn more about phospholipid molecule, refer to:
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What process produces most of the nadh that contributes to atp synthesis in the cell?.
Glucose enters the cell during the glycolysis process. Two pyruvate, which are required for the following step, are produced by the cell after it passes it via a series of chemical processes. Furthermore, it produces two ATP and two NADH, which are then transported to the mitochondria.
What activity causes the majority of the cell's ATP production?About thirty-two ATP molecules are produced for every oxidised glucose molecule during cellular respiration, which takes place mostly in the mitochondrial matrix.
The citric acid cycle, the second stage of aerobic cellular respiration, is the mechanism responsible for the production of both NADH and FADH2. Glycolysis, the citric acid cycle, and the electron transport chain are the three basic processes that make up aerobic cellular respiration.
ATP is generated during the glycolysis phase.
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difference between aerobic and anaerobic respiration
Aerobic respiration is when sugars are converted to ATP when oxygen is present, and aerobic respiration is performed in the cytoplasm and mitochondria.
Anaerobic respiration is when sugars are converted to ATP when no oxygen is present, and anaerobic respiration is only performed in the cytoplasm.
How do we obtain energy from plants?
To obtain energy from plants, we must intake the plant items and the sugars of the plants are broken down into further smaller components inside the human body by the process of respiration to gain energy.
Energy is the amongst the most essential requirement of the living body to carry out the various processes of life. Energy may have different chemical form in different organisms but the most prevalent form of energy used is ATP.
Respiration in humans is the process of breaking down the food taken in into smaller parts that can be absorbed by cells in order to create energy. The energy is synthesized by the cell organelle called mitochondria.
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A population of beavers has 135 individuals that are homozygous for one allele, 230 that are heterozygous, and 135 that are homozygous for the other allele. Compared with hardy–weinberg expectations, this population has _______ heterozygotes.
There are 20 fewer people in this population than predicted by Hardy-Weinberg. If 20 more heterozygotes were present
What is a heterozygote, for instance?You have a genetic trait for that gene if the two versions differ from one another. For instance, having one gene for red hair or one allele for brown hair could indicate that you are heterozygous for hair color. Which qualities are expressed depends on how the two alleles are related.
Who among the following is heterozygous?A individual who possesses two distinct alleles for each gene is said to be a heterozygote. Genetic disease can affect heterozygotes, however it depends here on illness. A heterozygous person is almost guaranteed to get some forms of hereditary illnesses.
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Bell-shaped distributions produced by plotting results of f2 and f3 crosses are typical of which type of inheritance?.
Plotting the results of f2 and f3 crossings resulted in Bell-shaped distributions, which represent multiple-factor inheritance.
What transpires when an inheritance ends?Lauren responds by fighting back, and as they struggle, Carson makes the claim that he is Lauren's biological father. However, Catherine seizes his gun and shoots Carson to death. All traces of Carson's captivity are eliminated when Lauren and Catherine work together to ignite the bunker by dousing it in gasoline and setting it on fire.
What is a bequest and why is it significant?Evolutionary change requires the inheritance of genetic material. It explains the genetic transmission process from one generation to the next. The fact that genetic inheritance is rarely taken into account in life history research may therefore at first seem surprising.
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how does the diaphragm help the alveoli do their job during respiration
Answer:
The diaphragm works together with the intercostal muscles of the ribs to help the alveoli by expanding the chest cavity, thus increasing the volume. As the volume of the chest cavity increases the pressure inside it drops, allowing air from outside the body to be pulled in and fill the lungs/alveoli.
The diaphragm helps the alveoli during respiration by creating changes in air pressure that facilitate the movement of air in and out of the lungs.
The diaphragm is a dome-shaped muscle located at the base of the chest cavity, separating the thoracic (chest) cavity from the abdominal cavity. During respiration, the diaphragm plays a crucial role in facilitating the movement of air in and out of the lungs.
When the diaphragm contracts, it flattens and moves downward, increasing the volume of the thoracic cavity. This expansion of the thoracic cavity lowers the air pressure within the lungs, creating a partial vacuum. As a result, air from the external environment, which has a higher pressure, rushes into the lungs through the airways and eventually reaches the alveoli.
Alveoli are small, thin-walled sacs located at the ends of the bronchioles in the lungs. They are the primary sites of gas exchange, where oxygen from the inhaled air diffuses into the bloodstream and carbon dioxide, a waste product, diffuses out of the bloodstream into the alveoli to be exhaled.
The movement of the diaphragm creates changes in pressure within the thoracic cavity, causing air to move into the lungs and reach the alveoli. As the diaphragm relaxes and moves upward, the volume of the thoracic cavity decreases, increasing the air pressure within the lungs. This higher pressure forces air out of the lungs and out through the airways during exhalation.
In summary, the diaphragm's contraction and relaxation create changes in air pressure that enable air to be drawn into the alveoli during inhalation and expelled from the alveoli during exhalation. This process facilitates efficient gas exchange between the alveoli and the bloodstream, allowing oxygen to be taken in and carbon dioxide to be eliminated from the body.
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where is the arista found on calliphoridae? group of answer choices on the lateral turgum of the prothorax under the halteres on the antennae (it's part of the antennae) near the base of the wing on the lateral portion of the mesothorax
The arista is found on Calliphoridae : on the antennae. The Calliphoridae are a family of insects in the order Diptera, with 1,900 known species
What is Calliphoridae?Calliphoridae are also called as blowfly. 'Blow' refers to the tendency of this insect group to lay their eggs on the human food, dead animals or animal waste. They arrive quickly after an animal dies especially if breeding occurs.
Common habitats of blow flies include temperate to tropical areas with accessible layers of loose, damp soil and other decaying material where larvae can develop and find nourishment.
Blowflies (Calliphoridae) are characterized by the ability of the larvae to develop in animal flesh.
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We can learn about the climate of different periods throughout history by studying what aspect of the bubbles trapped in ice core samples?.
The earliest evidence that the concentration of carbon dioxide and the global temperature have been correlated for at least the last million years of Earth's history came from scientists' examination of the gases trapped in ice cores.
Ice cores can provide us with information about historical climate shifts?Ice cores provide direct data on past changes in greenhouse gas concentrations as well as direct evidence of the potential for sudden climate change in certain situations.
How do ice cores help us understand past climates?They gather ice cores in numerous locations all over the planet to research regional climate variability and to compare and distinguish it from global climate signals. They gather samples from the ice, known as ice cores, which contain a record of how our planet appeared hundreds of thousands of years ago.
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Give two examples of abiotic factors that can affect population size.
Answer:
disease, food supply, and increased predation.
How can using a dam as a source of freshwater also harm agricultural
resources?
O A. Dams can help control floodwaters.
B. Dams can displace organisms.
C. Dams can collect topsoil during floods.
D. Dams can damage existing habitats.
Using dams as freshwater sources can damage existing habitats.
What is the Environmental Impact of dams?
Freshwater habitats are severely harmed by dams, which has an impact on both humans and the environment. Dams, canals, and diversions already stop the flow of 60% of the world's major rivers. Dams and the infrastructure they are associated with, including irrigation systems, are a major cause of the disappearance of numerous freshwater habitats and species.
Dams cut off rivers from their marshes and floodplains. Freshwater ecosystems may suffer catastrophic harm. They affect fish migration patterns and inundate riparian habitats such as waterfalls, rapids, riverbanks, and wetlands. Dams alter the diversity and productivity of species by impeding the natural flow of sediment to deltas, estuaries, flooded forests, wetlands, and inland seas. Water quality is impacted by dam activities as well. Retention of water and sediment has an impact on the capability of rivers to handle waste and the quality of the water (the ability to break down organic pollutants). This might result in the creation of harmful hydrogen sulfide gas, further lowering the quality of the water.
Hence, the answer is, D. Dams can damage existing habitats.
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Which of the following are reasons that garden peas ended up being a good organism for genetic experiments?-Had many varieties with easily identifiable differences.
-True-breeding lines could be established.
-Could be manually cross-pollinated.
-Easy to cultivate.
-Phenotypic traits were simple and distinct.
Garden peas made an useful organism for genetic research for the following reasons. had a wide variety with distinguishable characteristics. There may be established true-breeding lines. conceivably cross-pollinated by hand. simple to cultivate Simple and unique phenotypic features were present.
Which of the following best describes why garden peas made a suitable subject for genetic research?Garden peas are an excellent genetics study subject for the following reasons, which is why Gregor Mendel opted to utilize pea plants in his experiments:
existence of discernible features in many forms.
yields several offspring from a single cross.
a brief life cycle.
pollination may be controlled easily (cross-pollination).
Because it has opposing features, typically self-pollinates, and develops quickly, the garden pea plant makes an ideal subject for researching heredity.
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Under the right temperature and ph, phospholipids may have formed from precursors and assembled into.
Under the right temperature and pH, phospholipids may have formed from precursors and assembled into membrane like structures.
Phospholipids are lipid compounds made up of phosphoric acids, nitrogen bases, alcohol, and fatty acids. These compound lipids are important components of the cell membrane and give it a fluid appearance. This fundamental cellular structure serves as a barrier to protect the cell from various environmental insults while also allowing multiple cellular processes to occur in subcellular compartments.
Phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol, and phosphatidylserine are the most common phospholipids. Phospholipids are extremely important because they surround and protect internal cell components. They provide a structurally sound membrane that contributes to both the shape and functionality of cells because they do not mix with water.
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a response that is uniquely directed against pathogenic bordetella pertussis would involve what component? a response that is uniquely directed against pathogenic bordetella pertussis would involve what component? inflammation the complement system antibodies skin barrier
The response that is uniquely directed against pathogenic bordetella pertussis involves antibodies.
The bacterium known as Bordetella pertussis, when inhaled when an infected person coughs or sneezes, releases toxins that attach to the tiny hair-like structures (cilia) that line the upper airways and damage them. . This causes the airways to swell and make breathing difficult.
Antibodies are proteins produced by the immune system in response to infection in the body. They are an important part of the body's defense system because they work to destroy disease-causing organisms (such as viruses and bacteria) and prevent them from infecting human cells.
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1. A mineral sample is found to have a density of
3.0 grams per cubic centimeter. It is then broken
into two pieces, with one piece twice as large as
the other. The smaller of the two pieces will
have a density of
(1) 1.0 g/cm³
(2) 1.5 g/cm³
(3) 3.0 g/cm³
(4) 6.0 g/cm³
A mineral sample is found to have a density of 3.0 grams per cubic centimeter. It is then broken into two pieces, with one piece twice as large as the other. The smaller of the two pieces will have a density of 3.0 g/cm³.
A mineral is defined as "an inorganic element or compound that occurs naturally and has an ordered internal structure, a distinctive chemical composition, a crystallographic form, and physical qualities." Rocks, which are naturally occurring solids made up of one or more minerals, are different from minerals.
Quartz, feldspar, mica, amphibole, olivine, and calcite are examples of common minerals.
a naturally occurring, uniformly crystalline, inorganic solid with a distinct chemical composition, crystalline structure, color, and hardness. Azurite, aragonite, biotite, calcite, garnet, gold, and pyrite are examples of different types of minerals.
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What is the process in which an mrna molecule is used to synthesize a specific polypeptide on a ribosome?.
the process by which an mRNA molecule is used to synthesize a specific polypeptide on the ribosome is called translation.
The translation is the process by which the nucleotide sequence in the mRNA is translated into the amino acid sequence of the polypeptide chain. During this process, selects 'read' information about messenger RNA (mRNA) and its function to make a protein.
The translation process itself is divided into 3 stages:
Initiation stage: In this stage, the ribosome assembles around the mRNA to be read and the first tRNA carries the amino acid methionine (which matches the start codon, AUG). This part is necessary for the translation stage to begin.Elongation: the stage where the amino acid chain is extended.Termination: the polypeptide chain is released.Learn more about translation mRNA here https://brainly.com/question/510682
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Photoreceptors are distributed over the entire neural retina, except where the optic nerve leaves the eyeball. This site is called the __________.
The blind spot is the region where the optic nerve leaves the eyeball and the photoreceptor cells(light-sensitive cells) are absent.
What is a blind spot?
It is a small portion of the visual field of each eye that corresponds to the position of the optic disc within the retina located to the right of the center of vision of the right eye and vice versa in the left eye. There are no photoreceptors (rods and cones) in the optic disc and hence there is no image detection in this area.
The nerve fibers route before the retina, blocking some light and creating a blind spot where the fibers pass through the retina and out of the eye.
Rod and cone photoreceptors are specialized neurons that function in the initial step of vision. Photoreceptor cells lie at the back of the retina adjacent to the retinal pigment epithelium (RPE), a cell layer that is vital for the survival of photoreceptors.
Because of the absence of photoreceptor cells, objects are obscured entirely by the blind spot and unseen in monocular vision.
Hence blind spot is the region of the optic nerve where photoreceptor cells are absent and there is no vision.
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What is coral bleaching and what causes coral bleaching?
Corals will eject the algae (zooxanthellae) dwelling in their tissues if the water is too warm, which will turn the coral entirely white. The term for this is coral bleaching.
What is coral bleaching?
Corals release the microscopic algae that reside in their tissues when they are under stress. Coral tissues become transparent in the absence of these algae, revealing their white skeleton. The term for this is coral bleaching. While bleached corals are not actually dead, they are more vulnerable to famine and illness.Why do coral reefs bleach?
When corals are under stress, bleaching happens. Summer heat stress brought on by hotter water and more UV rays is a major factor in coral bleaching on the Great Barrier Reef. Bleaching can be caused by a temperature increase of merely one degree Celsius for four weeks.Corals start to hunger when their food source—the zooxanthellae—is taken away. Corals start to perish if elevated water temperatures remain for a long time (eight weeks or more).Hence, UV radiations are the major cause for coral bleaching.
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what causes the different seasons on earth
Answer:
Earth Tilted Axis
Explanation:
Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere.
:)
Answer:
The movement of the earth.
Explanation:
"The earth's spin axis is tilted. This is what causes the seasons. When the earth's axis points towards the sun, it is summer for that hemisphere. When the earth's axis points away, winter can be expected."
Because the earth is constantly moving/spinning *although slowly*. Depending on where the earth is tilted or what side the sun is pointing to will decided the seasons; as mentioned if the earth's axis is pointed away winter can be expected in the said hemisphere.
although Hemshpheres are a whole other deal that shouldn't be needed for this question.
4. Some people with spinal cord injuries do not sweat below the area of injury. Without the ability to sweat, the human body temperature begins to rise. Which statement would best describe this situation?
A) Feedback mechanisms regulate blood sugar levels.
B) Genetic mutations increase.
C) ATP energy is not available.
D) The dynamic equilibrium is broken.
Some people with spinal cord injuries do not sweat below the area of injury. Without the ability to sweat, the human body temperature begins to rise. The statement that describes this situation is: (D) The dynamic equilibrium is broken.
Spinal cord can also be called the backbone of the humans. It is a long bone that extends from below the brain to the hip region. There are 5 types of bones in the spinal cord that are present in varying number that make up a total of 33 bones.
Dynamic equilibrium state of the body is also called the condition of homeostasis. In this condition, the rate of loss is equal to the rate of gain. Any disruption from this state can cause severe consequences to the body.
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which blood gas report most likely reflects the acid-base balance of an infant with severe dehydration?
The blood gas report that most likely reflects the acid-base balance of an infant with severe dehydration is pH of 7.20 and [tex]HCO_{3}[/tex] of 20 mEq/L (20 mmol/L). This levels indicates metabolic acidosis. So the correct option is C.
What is metabolic acidosis?It is a disorder of acid-base balance in which there are many acidic components in the blood plasma. It can be caused by some increase in proton generation, because the kidneys are unable to excrete hydrogen, or by loss of bicarbonate from the kidney or intestinal tract.
In the case of the infant, the blood gas report may be due to chronic diarrhea since he is also dehydrated.
Therefore, we can confirm that the blood gas report that most likely reflects the acid-base balance of an infant with severe dehydration is pH of 7.20 and [tex]HCO_{3}[/tex] of 20 mEq/L (20 mmol/L). This levels indicates metabolic acidosis. So the correct option is C.
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Which blood gas report most likely reflects the acid-base balance of an infant with severe dehydration?
a) pH of 7.50 and [tex]PCO_{2}[/tex] of 34 mm Hg
b) pH of 7.23 and [tex]PCO_{2}[/tex] of 70 mm Hg
c) pH of 7.20 and [tex]HCO_{3}[/tex] of 20 mEq/L (20 mmol/L)
d) pH of 7.56 and [tex]HCO_{3}[/tex] of 30 mEq/L (30 mmol/L)
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What is meiosis step by step?
Explanation:
interphase ll, DNA not replicated.
chromosome remain visible.
prophase ll, chromosome move towards the poles.
chromosome thickens.
metaphase ll, chromosome lines up in the middle.
anaphase ll, chromotids move apart.
telophase, nuclear appears .
spindle fibres dissapears.
formation of 4 daughter cells.
According to cell biology, the division of duplicated chromosomes into two new nuclei occurs during the mitotic phase of the cell cycle.
What are the stages of Mitosis?Meiosis is the type of cell division that results in four daughter cells, each with half the number of chromosomes of the parent cell.
Mitosis, the process of cell division, creates genetically identical cells with a constant number of chromosomes. Thus, equational division is another name for mitosis.
Meiosis is broken down into two stages. Several phases are split into each step.
Menopause I:
First phase
I. Metaphase
I. Anaphase
I. Telophase
I. Cytokinesis
2. Meiosis
Telophase II, Prophase II, Metaphase II, Anaphase II, and Cytokinesis II.
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Some researchers suggest that ______ molecules were the first information molecules formed on early earth.
Some researchers recommend that RNA molecules had been the first statistics molecules fashioned on early earth.
Most scientists think that RNA got here first because RNA can do jobs save information and perform diverse features that keep cells alive. This idea, that RNA got here first, is known as the RNA world hypothesis.
The RNA world is a hypothetical stage in the evolutionary history of lifestyles on the earth, in which self-replicating RNA molecules proliferated earlier than the evolution of DNA and proteins. The term additionally refers to the speculation that posits the existence of this degree.
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If an organism has a diploid number of 6 chromosomes, how many different combinations of maternal and paternal chromosomes are possible in its gametes?.
The different number of maternal and paternal chromosomes possible will be 8. that is option A is correct.
Chromosomes are defined as the genetic material within the body. They are thread like structures within the DNA and are made of proteins. In general human body has 23 pairs of chromosomes out of which 22 are numbered while 1 is the sex chromosome. Gametes are genetic material that are generally haploid in nature and they carry only one chromosome along with them. According to the question, there are 6 diploid chromosomes present which means there are 3 pairs of chromosomes. So each gametes will have a total number of 3 chromosomal pairs irrespective of their type that is maternal or paternal. Therefore combination of maternal and paternal chromosomes are given by
Combination = 2ⁿ where n is pair of chromosomes and here n = 3
Combination = 2³ = 8
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Complete Question :
If an organism has a diploid number of 6 chromosomes, how many different combinations of maternal and paternal chromosomes are possible in its gametes?
A. 8
B. 12
C. 3
D. 16
E. 6
what did researchers learn about gene therapy of rpe65 mutation in briard dogs that was important for treatment of humans with lca2?
Comparable to humans, the Briard shepherd can get Leber amaurosis due to mutations in the RPE65 gene.
Explain about the Leber amaurosis?Since dogs and humans both have visual senses, determining if they can see involves little more than observing how they behave. Numerous anatomical characteristics of dog eyes and human eyes are similar.
Causes. At least 20 genes, all of which are required for retinal function and adequate vision, can experience variations (also known as mutations), which can lead to Leber congenital amaurosis. Numerous functions of these genes are involved in the formation and operation of the retina.
A series of congenital retinal dystrophies called Leber congenital amaurosis (LCA) causes severe visual loss at a young age. Nystagmus, sluggish or nearly nonexistent pupillary responses, significantly reduced visual acuity, photophobia, and excessive hyperopia are common symptoms in patients.
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