Hypothesis: The use of chemical-based fertilizer on the farm uphill from Joe's house is causing a decrease in the number of frogs in his pond.
What are the steps to test this hypothesis?Dependent Variable: The number of frogs in the pond in the spring time.
Independent Variable: The use of chemical-based fertilizer on the farm uphill from Joe's house.
Procedure:
Establish a control group by counting the number of frogs in the pond before the farm starts using chemical-based fertilizer.Monitor the number of frogs in the pond for one year while the farm uses chemical-based fertilizer.Compare the number of frogs in the pond before and after the use of chemical-based fertilizer.Repeat the experiment by using an alternative fertilizer or no fertilizer and observe the frog population in the pond.Anticipated Results: The number of frogs in the pond will be lower after the farm begins using chemical-based fertilizer compared to before and compared to the control group (no fertilizer or alternative fertilizer).
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what type of bond holds together the complementary nucleotides?
Hydrogen bonds are the type of bond holds together the complementary nucleotides.
The G-C and A-T base pairs form hydrogen bonds that hold the two complementary nucleotide strands of each DNA molecule's double helix together. The genetic data contained in an organism's DNA serves as a repository for all of the protein synthesis instructions that will ever be needed. The two strands are joined together by potent hydrogen bonds. Due to their anti-parallel orientation, the two strands are precisely aligned.
When nucleotides are incorporated into DNA, a covalent binding between the 5′ phosphate group of one nucleotide and the 3′-OH group of another nucleotide is formed. This covalent interaction is known as a phosphodiester bond. In this way, phosphate-sugar-phosphate-sugar-phosphate forms the "backbone" of each DNA strand.
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Some students were building a model of a
digestive system. Which choice best
describes a process they should show with
their model?
F Tissues digest food for the organ
system to absorb.
GCells digest food, which is then
absorbed by organs.
Organs digest food by working
together as a system.
(H)
The organ system uses specialized
cells to digest food.
The digestive process is divided into four steps: ingestion, chemical and mechanical food breakdown, nutrient absorption, and expulsion of indigestible food.
What does the digestive process entail?
The digestive process starts as soon as something is chewed. In order for food to pass more easily through your esophagus and into your stomach, saliva, a digestive juice produced by your salivary glands, moistens the food. The carbs in food also begin to be broken down by an enzyme found in saliva.
Motility, digestion, absorption, and secretion are the four fundamental functions of the digestive system. Our digestive system transforms our food into energy that we can use.
The digestive system's initial function is to take in food through the mouth. The "ingesting" procedure must take place before anything else can happen.
The complete question is:
Some students were building a model of a digestive system. Which choice best describes a process they should show with their model?
a) F Tissues digest food for the organ system to absorb.
b) G Cells digest food, which is then absorbed by organs.
c) Organs digest food by working together as a system.
d) The organ system uses specialized cells to digest food.
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the muscles involved in the breathing process are in a relaxed state _____________ .
The muscles involved in the breathing process are in a relaxed state inspiratory rib cage muscles.
What is breathing process?
We can breathe thanks to our respiratory system and lungs. They expel carbon dioxide and inspire oxygen into our bodies, a process known as inspiration or inhalation (called expiration, or exhalation). The process of breathing involves the exchange of oxygen and carbon dioxide.
The simple movements of inhaling and exhaling are only a small portion of the intricate process of respiration, which consists of the following four steps:
Ventilation.
gas exchange in the lungs.
transport of gas.
outside gas exchange.
Air enters your lungs when you inhale (breathe), and the oxygen in that air travels to your blood. A waste gas called carbon dioxide travels from your blood to your lungs at the same time and is exhaled (breathed out). Gas exchange is a procedure that is vital to life.
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What are the 4 concepts of evolution?.
Variation, inheritance, selection, and time are the four concepts that regulate evolution. These are viewed as components of the evolutionary process driven by natural selection. The hypothesis of evolution through natural selection uses these ideas as a conceptual baseline.
Individuals in every species have different genetic make-ups, which result in numerous differences in their physical appearance. Similar to this, individuals pass on a portion of their genetic material to the upcoming generation through inheritance. Some of these hereditary traits help the progeny perform better in challenging circumstances. Later, they produce more children of their own with a more developed set of traits. This process of selection causes changes in the species throughout time. The accumulation of these changes in a species, however, may take days, months, decades, or even millions of years.
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how to activate the immune system to produce specific antibodies produced by the b lymphocytes ?
Antigens that bind to the clonally produced B cell receptors (BCRs) start the process of B lymphocyte activation by starting signalling cascades that cause the transcription of a number of genes related to B cell activation.
When a B-receptor cell's identifies and attaches to an antigen, the B-cell is activated. However, the second element indicated above—stimulation by an active helper T cell—is often required for B-cell activation.
The immune system's B lymphocytes are created from stem cells in the bone marrow. also known as a B cell. Enlarge. blood cell formation. To develop into a red blood cell, platelet, or white blood cell, a blood stem cell must go through a number of stages.
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What is the product of the Calvin cycle that leaves and can then form sugars *?.
The Calvin cycle uses the ATP and NADPH produced in the light reactions to produce sugar.
The Calvin cycle reactions add carbon (from atmospheric CO2) to RuBP, a simple five-carbon molecule. These reactions make use of the chemical energy generated by the light reactions, NADPH and ATP.
Two glyceraldehyde-3-phosphate (G3P) molecules, three ADP molecules, and two NADP+ molecules are the immediate products of one turn of the Calvin cycle. (ADP and NADP+ are not technically "products. They are regenerated and then reused in light-dependent reactions). Each G3P molecule has three carbons.
The Calvin cycle produces glyceraldehyde 3-phosphate (G3P). It is a three-carbon sugar that serves as the foundation for the synthesis of other carbohydrates. While some of this G3P is available for molecular synthesis and is utilized to create fructose diphosphate, some is used to regenerate the RuBP, allowing the cycle to continue.
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Which heart chambers and valves are labelled 1 and 2?
1 Left ventricle and left AV valve, 2 Right ventricle and right AV valve
1 Right ventricle and pulmonary valve, 2 Left ventricle and aortic valve
1 Left ventricle and aortic valve, 2 Right ventricle and pulmonary valve
1 Right ventricle and right AV valve, 2 Left ventricle and left AV valve
1 Right ventricle and aortic valve, 2 Left ventricle and pulmonary valve
The heart chambers and valves which are labelled 1 and 2 include the following below which is denoted as option B.
1. Right ventricle and pulmonary valve
2. Left ventricle and aortic valve.
What is the Heart?This is referred to as the central organ of the circulatory system and it is involved in pumping of blood around the body for adequate distribution of substances such as oxygen, nutrients etc.
The left ventricle is denoted as 2 and it has the aortic valve present in the region while the right ventricle is denoted as 1 and it contains pulmonary valve which have the various functions they perform.
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Why is Sickle Cell Anemia a good example of how evolutionary thinking can help us better understand human diseases?
a.) The fact that the sickle cell allele has increased in humans over time shows that evolution does not always make the population stronger.
b.) Sickle Cell Anemia is harmful, therefore the allele is dying out over time.
c.) Sickle Cell Anemia shows how a mutation that is beneficial in one environment can be harmful in another.
d.) The high prevalence of the sickle cell allele in people of African descent caused scientists to investigate whether there were any beneficial effects of the mutation
Sickle Cell Anemia is a good example of how evolutionary thinking can help us better understand human diseases because the high prevalence of the sickle cell allele in people of African descent caused scientists to investigate whether there were any beneficial effects of the mutation.
What do you mean sickle cell anemia?A series of blood abnormalities known as sickle cell disease (SCD) are commonly hereditary. The most typical variety is referred to as sickle cell anemia. The oxygen-carrying protein hemoglobin in red blood cells becomes dysfunctional as a result. In certain cases, this results in a hard, sickle-like form. Sickle cell disease problems often start at the age of 5 to 6 months. Anemia, swelling in the hands and feet, bacterial infections, stroke, and pain episodes (also known as sickle cell crises) are just a few of the health issues that could arise. As people age, they may experience chronic pain. In the developed world, people typically live between 40 and 60 years.
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how do muscles behave when theyre not working?
When your muscles don't function or move normally, muscular function loss happens. Being unable to contract your muscles regularly is known as complete muscular loss, or paralysis. You won't be able to control the damaged body parts correctly if your muscles stop working. This symptom is frequently an indication of a severe health issue, such as a major injury, a drug overdose, or a coma.
what are muscles ?Muscles are soft tissues. Many stretchy fibers make up your muscles. You have more than 600 muscles in your body. Muscles of the skeletal, smooth, and cardiac types make up the muscular system, an organ system. The blood is circulated throughout the body, allowing for mobility and maintaining posture. However, some muscles can function entirely independently. Vertebrate muscular systems are controlled by the neurological system.
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Is RNA testing genetic testing?.
RNA analysis, which is an output of gene expression, and biochemical analysis, which measures a specific protein output, are two examples of ways that genetic testing can quantify the effects of genetic changes.
While RNA and DNA both contain bases that contain nitrogen and are connected by sugar-phosphate backbones, RNA and DNA differ from each other physically and functionally. DNA is double-stranded, whereas RNA is single-stranded structurally. Thymine, also known as 5-methyl uracil, is a pyrimidine nucleobase found in DNA, whereas uracil is a distinct pyrimidine nucleobase found in RNA. However, studies have demonstrated that further RNA testing aids in overcoming DNA testing's limitations. Combining DNA and RNA tests can produce answers that are much more accurate and nuanced, especially when it comes to testing results that are currently unclear.
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which type of pathogen lives inside and depends entirely on the resources and energy of other cells for reproduction and growth?
Viruses are minute biological agents that enter the bodies of living hosts and multiply within their cellular organelles. The ability to proliferate requires living cells, making viruses microscopic infectious agents. To survive and multiply, they can rely on a bacterial, plant, or animal host.
Describe cellular pathogens.A disease causing agent known as a pathogen interferes with an infected organism's ability to function normally. Viruses and prions are examples of non-cellular pathogens, while parasites, protozoa, and bacteria are examples of cellular pathogens.
What are pathogens that are obligatory and facultative?Obligate parasite is a term used to describe an organism that cannot complete its life span without such host. They require hosts to survive. An organism known as a facultative parasites is one that may engage in parasitic for the duration of its life span on any host.
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The synthesis of complex molecules _______ energy, whereas their degradation _______ energy. The synthesis of complex molecules occurs with _______ in entropy.
The synthesis of complex molecules endergonic energy, whereas their degradation exergonic energy. The synthesis of complex molecules occurs with decreased in entropy.
Does energy need to be expended during the production of complex molecules?Keep in mind that energy is released when complex molecules are broken down by catabolic cellular pathways as opposed to when anabolic cellular pathways create complex molecules from simpler ones. It is implied that certain chemical bonds have potential energy since energy can be released when such bonds break.
What does "complex molecule synthesis" entail?Bonds that already exist are typically broken and new ones created during a chemical synthesis. In order to create a complex molecule, a large number of discrete reactions may be required, each leading in turn to the final result that is sought.
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the muscles involved in the breathing process are in a relaxed state _____________ .
The muscles involved in the breathing process are in a relaxed state during exhalation. During normal, quiet breathing, the diaphragm and intercostal muscles contract during inhalation and relax during exhalation.
As the breathing diaphragm and intercostal muscles contract, they increase the volume of the thoracic cavity, which decreases the pressure inside the lungs, and air flows into the lungs to equalize the pressure. As breathing the diaphragm and intercostal muscles relax during exhalation, the volume of the thoracic cavity decreases, increasing the pressure inside the lungs, and air flows out of the lungs. During exhalation, the muscles are in a relaxed state and the lungs release the air that was taken in during inhalation. breathing process is called passive exhalation, as the muscles are not actively contracting to push the air out of the lungs, but instead the air flows out due to the elastic recoil of the lungs and the natural tendency for gases to move from areas of higher pressure to lower pressure.
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Do clams have 100 eyes?.
The exposed mantle of giant clams (Tridacna spp.) has a large number of tiny pinhole-like eyes.
Several hundred tiny pinhole eyes, commonly known as hyaline organs, on the exposed mantle have been observed in giant clams. Clam eyes can detect changes in light levels because they are light-sensitive.
They retract their siphon and mantle and partially seal their shells in response to abrupt light dimming, object movement, and sudden strong light. This could happen in a natural setting when predators like as fish and birds in the big sea pass over the clam, changing the light levels or inducing a "shadow response."
The mollusks known as bivalves are enclosed in two identical cupped shells that are connected by a and have experienced several evolutions. Mollusks have a variety of distinct eye shapes. Some clams have compound eyes with many nits , which set them apart from the compound eyes of insects.
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in energy efficiency calculations where is most of the energy lost
A: to the environment, as heat
B: to the environment, as stored energy
C: to the environment, as water vapor
A: to the environment, as heat. In energy efficiency calculations, the concept of "wasted energy" refers to energy that is not effectively used for its intended purpose and is instead released into the environment as heat.
What is Energy?
Energy is a property of matter and radiation that can be transferred or converted into different forms. It is the ability of a system to do work or cause change, and is often measured in units such as joules or calories.
There are many different forms of energy, including thermal energy (heat), kinetic energy (motion), potential energy (stored energy), electrical energy, chemical energy, and nuclear energy.
This is often the result of the conversion of one form of energy to another, such as the transformation of electrical energy to thermal energy in a light bulb.
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explain the significance of detritivores (decomposers) in a food chain/web.
Detritivores, also known as decomposers, play a crucial role in the food chain/web by breaking down dead plant and animal organisms material and recycling nutrients back into the ecosystem.
They consume dead organisms and their waste products, breaking them down into simpler compounds that can be reutilized by other detritivores organisms. Without detritivores, dead plant and animal material would accumulate and eventually deplete the available nutrient pool in the ecosystem Detritivores include organisms such as bacteria, fungi, and some insects, worms, and snails. These food chain are the vital link between the living and non-living components of an ecosystem, they recycle nutrients and make them available to other organisms, including plants and animals that form the base of the food chain. They also play an important role in maintaining the balance of an ecosystem.
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What do we call the physical expression of a genetic trait
Answer:Phenotype refers to an individual's observable traits, such as height, eye color and blood type. A person's phenotype is determined by both their genomic makeup (genotype) and environmental factors.
at the peripheral end of a sensory neuron, detects sensations and triggers impulses.
At the peripheral end of sensory neurons, Receptors are present and they will receive the stimulus.
Receptors are present at the end of the sensory neuron and have various types based on its stimuli. Receptors are present which detect light, sound, touch, pain etc…
The receptors of Light are called Photoreceptors, The receptors of sound Auditory Receptors,Smell are Olfactory receptors,Touch are Tactile Receptors and receptors are also associated with pain, pressure, hot, cold etc...Sensory Neurons are associated with sense organs and they carry the impulses to Brain.Sensory pathways consist of the chain of neurons, from receptor organ to cerebral cortex of brain and they are mainly responsible for senses like Sight, Hearing, Smell, taste and touch.
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How has the study of mitosis affected scientists knowledge of cancer it led to a study?.
The study of mitosis has affected scientists’ knowledge of cancer. It led to a study of how to induce cancer cells to divide more rapidly.
This knowledge can be used to better comprehend centrosomes, the human cell's SPB homologue. The majority of cancer types have aberrant centrosome size or shape in cancer cells.
Since the regular "checkpoints" that control mitosis are disregarded or overturned by the cancer cell, cancer is fundamentally a mitotic illness. Cancer development starts with the conversion of a single healthy cell into a cancer cell.
During the mitotic stage of cell division, these proteins are expressed more. Thus, blocking the cell cycle during the mitotic phase may lead to an increase in immune resistance, which can aid cancer cells in fending off immunological attack.
Complete question:
How has the study of mitosis affected scientists’ knowledge of cancer?
It led to a study of how to induce cancer cells to divide more rapidly.
It led to an understanding of how cancer cells divide so rapidly.
It led to the development of contact-inhibition regulators.
It led to the discovery of how to prevent cancer cells from dividing.
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What is the role of osmosis in the dialysis process?
Osmosis moves excess fluids from blood to the dialysate for removal.
-Osmosis moves excess fluids from dialysate to the blood to replenish the patient.
-Osmosis moves small waste molecules from blood to the dialysate for removal.
-Osmosis moves large components like blood cells and proteins to dialysate for removal.
what is osmosis?
osmosis is movement of water molecules from a solution with a high concentration of water molecules to solution with lower concentration of water molecules, through cell's partially permeable membrane
Any harmful substances will then diffuse into dialysis fluid from blood vessels in peritoneum. Because dialysis fluid contains sugar or substances similar to sugar, excess water is also removed from blood by osmosis.
The spontaneous passage or diffusion of water or other solvents through semipermeable membrane (one that blocks passage of dissolved substances
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What were the important steps in Mendel's first experiments?.
There were three important steps in Mendel's first experiment: selection of true breeding varieties, hybridization, and self-pollination of these varieties.
Mendel experimented with garden pea hybridization. He investigated how seven various morphological features, such as seed colour, plant height, seed shape, etc., are passed down across generations in pea plants. Mendel chose the true-breeding variety for his parental generation tests (P generation). The kinds that produce the same feature throughout a number of subsequent generations are considered true breeding varieties. Mendel created hybrid plants by breeding many genuine breeding species.
Hybridization occurs when two people with divergent personalities are crossed. These hybrids are also known as F1 plants or F1 (first filial) generation hybrids. Mendel discovered that just one of the phenotypes present in the parental generation was expressed in the F1 plants when he examined them. Selfing or self-pollination occurs when two individuals with the same genotype cross, or reproduce, naturally. Mendel produced F2 plants in a 3:1 ratio of parental triats by growing plants from F1 seeds, cultivating them, and allowing them to self-pollinate.
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how many layers of phospholipids make up a typical cell membrane?
A typical cell membrane is composed of two layers of phospholipids.
What is cell membrane?Cell membrane, also known as the plasma membrane, is a thin, flexible, semipermeable barrier that surrounds the outside of a cell. It helps to regulate what substances enter or leave a cell, as well as providing structure and support to the cell. The cell membrane also contains proteins that facilitate cellular communication, help transport molecules into and out of the cell, and serve as recognition sites for other cells.
Each layer consists of a phospholipid bilayer, which is made up of two layers of phospholipids that have hydrophilic (water-attracting) heads and hydrophobic (water-repelling) tails. The hydrophilic heads are arranged on the outside of the membrane, forming the outer surface of the bilayer. The hydrophobic tails are arranged in the middle of the bilayer, forming the inner surface of the membrane. This arrangement of phospholipids creates a barrier between the inside and outside of the cell, and it is this barrier that helps to regulate the movement of substances in and out of the cell.
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How does science work to solve environmental problems? explain the steps in the scientific process as it relates to an environmental problem and describe one potential challenge to solving that problem.
There is no doubt that advances in science and technology can help in the search for solutions to the issues facing the environment today.
-In order to implement the issues, it is necessary to consider the ecological, social, and cultural policies of the environment as well as its economic viability. Creating a sustainable culture, avoiding resource extraction that harms the environment, and coming up with solutions that do not rely on the environment are some of the biggest challenges the world is currently facing.In order to address these environmental concerns, properly formulated plans must be in place to potentially produce a solution. Environmental problems require scientific reasoning and logical analysis.It is necessary to plan for the before-and after-effects on the environment, and whether the planning.To know more about environment visit:-
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What determines the function of a specialized cell?
A The type of RNA in the cell
B the number of ribosomes in the cell
C the number of chromosomes in the cell
D the active genes in the cell
Option D the active genes in the cell determines the function of a specialized cell.
What is the relationship between cell specialization and gene expression?The relationship between cell specialization and gene expression is that the expression of specific genes is what enables a cell to become specialized. Cell specialization is the result of the expression of certain genes that control the development, function, and maintenance of the cell's specialized characteristics.
Therefore, with this data, we can see that gene expression in a cell will determine its specialization such as for example, a muscle cell will have a different gene expression profile than a skin cell.
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What happens if there is no chlorophyll in the leaves?.
A lack of chlorophyll, the natural pigment that gives green plants their colour, results in chlorosis, a yellowing of the leaf tissue.
Chlorosis may be brought on by issues with drainage, damaged roots, compacted roots, high alkalinity, and nutrient deficiencies in the plant.
If a plant doesn't produce enough chlorophyll, which it does naturally, it will die and lose its green hue, turning brownish-yellow.
However, there is a small distinction between how plants with green leaves absorb solar energy and how plants without green leaves carry out photosynthesis without chlorophyll. The entire visible light spectrum is absorbed by green leaves. These light waves are reddish-orange and violet-blue.
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which of these statements about enzyme inhibitors is true?
The action of inhibitors may be both either reversible or irreversible is trues about enzyme inhibitors.
What is enzyme inhibitors?
A chemical that binds to an enzyme and inhibits its activity is termed as an enzyme inhibitor. Proteins are referred as enzymes speed up the chemical processes that turn substrate molecules into products and are essential for life. An enzyme inhibitor is what? Inhibitors of enzyme activity are chemicals that bind to the enzyme without altering the protein structure of the enzyme.
Enzyme inhibition reactions come in three different varieties.
The inhibition of competition.Inhibitive non-competition.Inhibitive Non-Competition.To know more about enzyme inhibitors visit
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what is another plant adaptation that helps a plant reproduce?
The another plant adaptation that helps a plant reproduce is vegetative propagation.
This is a process by which a factory can produce new shops from corridor of its living structure, similar as stems, roots, and leaves. This is an as-exual reproduction system and doesn't bear pollination or the product of seeds. Through vegetative propagation, a factory can make duplicates of itself, producing exact clones of the original factory.
This helps the species to spread to new areas and reproduce in large figures. This type of reduplication is especially useful in species that have difficulty producing feasible seeds or need to establish a large presence snappily. exemplifications of shops that use vegetative propagation include strawberries, mint, and asparagus.
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What is Darwin's theory of natural selection and give examples?.
Natural selection is the theory behind evolution put forth by Charles Darwin. Given the scarcity of resources in nature, animals with heritable features that promote survival and reproduction will typically produce more offspring than their contemporaries, leading to an increase in the frequency of such traits across successive generations.
According to Darwin's theory of natural selection in evolution, only the strongest organisms may survive and procreate in the world. The organism with advantageous features will therefore endure. In any population, a natural overabundance of children causes a perpetual struggle for survival. People who possess variants that aid in their ability to survive and reproduce tend to live longer and have more children than those who lack such variations. The advantageous variations are passed down to the offspring of survivors, and this process repeats again with each subsequent generation until the variation becomes a recognizable trait. The organisms within the environment alter and adapt to the new living circumstances as the environment changesLearn more about natural selection
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You see a new island forming the middle of the ocean from a volcano. You think it probably formed because...
a. It is located at a plate boundary and there is subducting plates allowing magma to come to the surface
b. It is located on a hotspot - a weak place on earth where magma comes to the surface
c. There is way too much pollution in the ocean d. Ocean currents caused this to form
it is located at a plate boundary and there is subducting plates allowing magma to come to the surface
What are the two laws that Mendel developed how are they met in meiosis?.
Gregor Mendel proposed the law of inheritance after seven years of research on pea plants. The laws of dominance, segregation, and independent assortment are among Mendel's laws of inheritance.
According to the law of segregation, each person has two alleles, but only one of them is passed on to the next generation. Mendel also tested green against yellow peas, round versus wrinkled, and other features that contrasted. He discovered that the outcomes were consistent across the board. He created the laws of Segregation and Dominance based on this. Mendel tested two qualities, each with two alleles, in a dihybrid cross.
Gametocytes (sperm and eggs) are produced during the meiotic process, which results in their having half (haploid) of each parent's DNA. According to Mendel's law of segregation, haploid gametes must partition the genes of the parents equally in order for their offspring to have an equal chance of acquiring either one or the other.
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