Less than 25% of the energy at one trophic level goes to the next trophic level due to energy loss during absorption and production. This assertion is true.
The following organism that eats the creature from the previous trophic level does not receive any energy from the food it consumes. The remainder of the food's energy is lost through the heat in addition to being used for a variety of biochemical processes including digestion, absorption, and synthesis.
Some of the input energy is wasted during the process of converting energy from one form to another and moving it from one area to another. The input energy is lost during the production of electricity as well as other processes, such as when gasoline is used in cars.
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which of the following is true about the acheulian complex? group of answer choices it emerged around 2.5 mya. it is used to describe simple pebble tools. it emerged around 1.7 mya. it is characteristic of homo habilis.
Acheulean handaxes were multi-purpose implements used for a variety of tasks.
Surface-wear studies reveal that the handaxe's uses included slaughtering and cleaning game, digging in dirt, and chopping wood or other plant materials.
Stone instrument making described by specific oval and pear-shaped "hand-tomahawks" associated with Homo erectus.
Acheulean advancements are thought to have originated around 1.76 million years ago, from the more primitive Oldowan innovation associated with Homo habilis.
Not only are Acheulean devices found all over the world, but it is also the longest-running industry, dating back over 1,000,000 years.
The earliest known Acheulean artifacts from Africa date back 1.6 million years. The most experienced Acheulean localities in India are just somewhat older than those in Africa.
Acheulean handaxes were multi-purpose tools used in a variety of tasks. Surface-wear studies reveal that the handaxe's uses included slaughtering and cleaning game, digging in dirt, and chopping wood or other plant materials.
Hand axes, for example, were more elegant and complex than Oldowan tools.
As a result, the other possibilities are meaningless.
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Full Question :
Which Of The Following Is True Regarding The Acheulean Complex? Group Of Answer Choices The Tools, Such As Hand Axes, Were More
Which of the following is true regarding the Acheulean Complex?
Group of answer choices
The tools, such as hand axes, were more refined and sophisticated than the Oldowan tools.
Later Homo habilis began to produce them.
The tools decreased in diversity, as hominins became focused on a few tool types.
The tools could be made from bone and wood in addition to stone.
A mutation that occurs in a somatic cell in an organism will most likely be transferred to?
When an organism reproduces sexually, changes to the genetic material can occur in the reproductive cells (sperm or eggs) and be inherited by the next generation. Mutations that occur in non-reproductive cells, however, are not passed on, as they are only transmitted to daughter cells via mitosis, not to the progeny.
The mutation is defined as any alteration in the DNA sequence, Biologists often use the term single nucleotide polymorphism (SNP) to refer to a single base pair alteration that is common in the population. This is distinct from a mutation, which is any alteration in the DNA sequence, and may be larger than a single base pair change. SNPs are characterized by at least two different sequences in a particular genetic location, with each sequence present in at least 1% of the population.
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Which of these avian male animal
reproductive parts is located inside the
cloaca and deposits the sperm inside the
hen's reproductive tract for
insemination?
A. Cowper's Gland
B. Papilla
C. Seminal Vesicle
D. Male private part
Answer:
The correct answer is B. Papilla.
Explanation:
In birds, the reproductive organs are located inside the cloaca, which is a common chamber for the digestive, urinary, and reproductive tracts. The papilla is a small, nipple-like organ located inside the cloaca that is used by male birds to deposit sperm inside the female's reproductive tract for insemination. Cowper's gland, seminal vesicle, and the male private part are not associated with bird reproduction.
what would happen if complexes i-iv of the mitochondrial electron transport chain pumped protons in the opposite direction?
If complexes i-iv of the mitochondrial ETC pumped electrons in the opposite direction there will be no formation of electrochemical gradient and hence no synthesis of ATP.
ETC is a series of electron carriers that transport electrons in a sequence along with the pumping of protons to generate an electrochemical gradient across the membrane. This gradient when passes through the ATP synthase generates ATP. The process occurs in the inner mitochondrial membrane.
ATP stands for Adenosine Triphosphate. It is the major source of energy for the body because the breakdown of ATP releases energy through which all the body processes are carried out.
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explain three specific ways that the carbon cycle naturally (without human activities) contributes to the greenhouse effect
The three specific ways that the carbon cycle naturally (without human activities) contributes to the greenhouse effect include the following below:
WeatheringDecompositionForest fires caused by lightning.What is Carbon cycle?This is referred to as the series of processes by which carbon compounds are interconverted in the environment.
The ways in which this happens without human activities are by the weathering of carbonated rocks which involves the disintegration of rocks into tiny particles which are easily absorbed into the atmosphere and the decomposition of organisms which arises from their death thereby making the answers given above as the correct choices.
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When Gregor Mendel crossed a homozygous tall plant with a homozygous short plant the F1 plants inherited?
When a homozygous tall plant and a heterozygous short plant were crossed by Gregor Mendel, the F1 plants acquired the trait, and all of the progeny were tall.
In a 3:1 ratio, short and tall plants are produced in the following generation if the progeny self-fertilizes.
All of the flowers in the F1 generation, which was produced by the cross-pollination of two parent plants, were purple. The consciousness of F1 plants produced the F2 generation, which had 75% purple and 25% white flowers. An experiment of this kind is referred to as a dominant phenotype.
The second filial generation, also known as the F2 generation, is made up of the children of the F1 generation.
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when reproduction is achieved through meiosis and subsequent fertilization, it is called____reproduction.
When reproduction is achieved through meiosis and subsequent fertilization, it is called as sexual reproduction.
The end result of fertilization is a cell (zygote) able to present process mobileular department to shape a brand new individual. The fusion of gametes initiates numerous reactions withinside the egg. One of those reasons a alternate withinside the egg membrane(s), in order that the attachment of and penetration via way of means of a couple of spermatozoon can't occur.
Meiosis is vital for sexual replica to occur, because it consequences withinside the formation of gametes (sperm and eggs). However, sexual replica consists of fertilization (the fusion among gametes), which isn't a part of the meiotic technique. This technique is needed to provide egg and sperm cells for sexual replica.
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Which cells will most likely display mutations that could potentially result in cancer?
Oncogenes are altered genes that induce uncontrolled cell growth and can result in cancer.
Which mutation type is most likely to cause cancer?P53, also known as TP53, is the gene that is most often altered in cancer patients. A damaged or absent p53 gene is present in more than 50% of malignancies. Most p53 gene mutations occur after birth. Despite the rarity of germline p53 mutations, those who have them have an increased chance of acquiring a wide range of cancers.
What leads to the mutating of cells into cancer?Nearly two thirds of the mutations in tumors are caused by random, unexpected DNA "mistakes." These mutations come from mistakes in the DNA copying process that happen when healthy cells divide.
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use the terms a) chemoautotrophs, b) chemoheterotrophs, c) photoautotrophs, and d) photoheterotrophs and identify the answer that correctly finishes the statement: plants are and herbivores are .
Photoautotrophs and chemoautotrophs that correctly finishes the statement: plants are and herbivores are respectivily.
Phototrophs are creatures that use photon capture to create complex organic compounds (like carbohydrates) and obtain energy. The word phototroph is derived from the Ancient Greek words phôs, phtós, which means "light" and "nutrition." They carry out many cellular metabolic processes using the energy from light. The idea that phototrophs must be photosynthetic is a widespread one. Many phototrophs, but not all, frequently photosynthesize, anabolically converting carbon dioxide into organic material that can be used for structural purposes, functional purposes, or as a source for subsequent catabolic processes (e.g. in the form of starches, sugars and fats). All phototrophs create an electrochemical gradient that is used by ATP synthase to produce the molecular energy currency for the cell, either through the utilization of electron transport chains or direct proton pumping. Autotrophic or heterotrophic phototrophs are both possible. If their electron and hydrogen donors are inorganic compounds (e.g. Na 2S 2O 3, as in some purple sulfur bacteria, or H 2S, as in some green sulfur bacteria) they can be also called lithotrophs, and so, some photoautotrophs are also called photolithoautotrophs. Examples of phototroph organisms are Rhodobacter capsulatus, Chromatium, and Chlorobium.
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glycolysis, which provides energy by breaking down carbohydrates like glucose, relates to activities lasting __________.
Generally less than 3 minutes is the lasting time for glycolysis, which provides energy by breaking down carbohydrates like glucose.
What is glycolysis?
Through a sequence of processes known as glycolysis, glucose is divided into two pyruvate molecules, each of which has three carbons. Since the majority of species alive today still use glycolysis, it is an old metabolic route that developed long ago.2,3
Superscript begins at 2,3, ends at 3, separated by a comma.
Glycolysis is the initial step in the process of cellular respiration in organisms. However, many anaerobic organisms—organisms that do not use oxygen—also contain this route since glycolysis does not require oxygen.
In glycolysis, sugar molecules are disassembled to produce the energy needed for cellular metabolism. It takes place in the cell's cytoplasm. Thousands of ATP molecules are produced during glycolysis and are utilised for several types of cellular metabolism.
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Which characteristic of bacteria makes them efficient transgenic organisms to produce insulin or other medicines?
They reproduce extremely quickly - characteristic of bacteria makes them efficient transgenic organisms to produce insulin or other medicines.
What is transgenic organisms?Transgenic organisms or cells have had their genomes transformed by the intentional insertion of one or more foreign DNA sequences from another species. For scientific objectives, transgenic organisms are created in laboratories.
Additionally, transgenic organisms have been created for commercial use. The most well-known examples are probably food crops like soy and corn that have been genetically altered to withstand pesticides and herbicides. These crops are commonly referred to as "GMOs" (genetically modified organisms).
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The blind spot in vertebrate eyes is a region of the retina that contains no photoreceptors.
a) true
b) false
True, the "blind spot" in vertebrate eyes is a region of the retina that contains no photoreceptors.
Blind spot: a narrow area of each eye's visual field where the optic disc is located within the retina. The optic disc lacks photoreceptors, hence there are no image detection mechanisms present here. The blind spot of the right eye is situated to the right of the visual center, whereas the blind spot of the left eye is situated to the left of the visual center. If one keeps both of their eyes open, they won't be able to notice their blind spots because the visual fields of their two eyes will overlap. Since the brain has the ability to "fill in" or disregard the missing area of the image, the blind spot can be challenging to subjectively identify even with one eye closed.
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Place the following structures in the order that an electrical impulse would travel beginning with the post-synaptic membrane.1. Dendrites2. Soma3. Axon hillock4. Internode5. Node of Ranvier6. Terminal arborization7. Synaptic knobs
The following structures in the order that an electrical impulse would travel beginning with the post-synaptic membrane include the following parts below:
1. Dendrites
2. Soma
3. Axon hillock
4. Internode
5. Node of Ranvier
6. Terminal arborization
7. Synaptic knobs.
What is a Neuron?This is referred to as the structural and fundamental unit of the nervous system and are involves in the transmission of impulses in different parts of the body.
The impulse is carried by the dendrites before it moves to the soma which is the body of the neuron and finally getting to the synaptic knobs.
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Entropy never decreases in a spontaneous process. Give an example to support this statement. n/a Now choose from one of the following options Why? a) The transfer of energy by heat from colder bodies to hotter bodies is a spontaneous process in which the entropy of the system of bodies increases. b The melting of an ice cube placed in a room causes an increase in the entropy of the room. c The dissolution of salt in water is a spontaneous process in which the entropy of the system increases. d) A plant uses energy from the Sun and converts it into sugar molecules by the process of photosynthesis.
C. The dissolution of salt in water is a spontaneous process in which the entropy of the system increases.
The entropy of a system is a measure of its disorder. In a spontaneous process, the entropy of a system increases. This is because in a spontaneous process, energy is exchanged between the system and its environment and the entropy of the environment always increases. An example of this is the dissolution of salt in water. Salt is composed of ions, which are charged particles. When salt is placed in water, the ions are attracted to the polar molecules of the water and the salt dissolves. This process is spontaneous because the entropy of the system increases. The entropy increases because the ions become more evenly distributed in the water, creating a higher degree of disorder. The energy released in this process is the result of the attraction between the ions and the water molecules, which lowers the overall energy of the system. This energy is then released as heat, further increasing the entropy of the environment. Thus, the entropy of the system increases due to the spontaneous process of salt dissolving in water.
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Which of these animal taxa has the highest population of species threatened with extinction? a) Birds b) Mammals c) Amphibians.
The animal taxon that has the largest population of species threatened with extinction is amphibians. Correct answer: letter C.
This is because they are especially vulnerable to environmental changes.
What changes are amphibians vulnerable to?They are sensitive to changes in temperature, humidity and other environmental factors, and especially susceptible to the effects of climate change, pollution and habitat destruction.
Destruction of wetlands and other natural habitats, as well as the introduction of invasive species, can also have a devastating effect on amphibian populations. As a result, amphibians are one of the most endangered animal taxa, with nearly one-third of their species threatened with extinction.
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Xylem helps plants deliver water and nutrients to the entire plant. What human body system is this like?.
Answer:
The Circulatory system
Explanation:
Like the Xylem help plants deliver water and nutrients throughout the body, the Circulatory system helps the human body transport water and nutrients throughout it (blood being pumped through blood vessels)
True or false? The "blind spot" in vertebrate eyes is a region of the retina that contains no photoreceptors.- True- False
The "blind spot" in vertebrate eyes is a region of the retina that contains no photoreceptors-True
What is the blind spot in eye?The retina is located in the back of your eye. Light-sensitive cells that make up your retina communicate what you see to your brain. Everybody's retina contains a location where the optic nerve attaches. Since there are no light-sensitive cells in this region, your retina cannot see in this area. This is the blind spot.
The blind spot is present in all vertebrates. Due to the nerve fibres not disrupting the retina and passing from behind the retina, octopuses and other cephalopods lack a blind spot.
Why is it crucial to understand the blind spot?The optic nerve and blood vessels exit the eyeball at the blind spot. The brain and optic nerve are interconnected. It delivers pictures to the brain, which processes them. This is how we can be certain of what we observe.
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What is the relationship between DNA sequence and amino acid sequence and protein structure?
DNA sequence, amino acid sequence, and protein structure are interrelated.
DNA sequence is a code containing amino acid sequence. The amino acid sequence determines the structure of the protein, which in turn affects the function of the protein. DNA sequencing is the process of determining the nucleic acid sequence in DNA.
Amino acid sequence mentions the arrangement of amino acids in the protein. It is normally written as a three-letter or one-letter code and helps in determining the shape of the protein. Protein structure is the arrangement of atoms in amino-acid molecules.
A change in DNA sequence gradually causes a change in the amino acid sequence, and this change eventually causes a change in the protein structure.
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If a student wanted to view the histology of nephron loops within renal pyramids, where in the kidney should they look?
Multiple Choice
Renal pelvis
Renal sinus
Renal papilla
Renal cortex
If a student wanted to view the histology of nephron loops within renal pyramids, then he/she should look in the renal medulla.
What is the renal medulla?The renal medulla is a structural inner part of the kidney in which we can observe nephron loops located in a region known as renal pyramids, which are very small arrangements formed by strings of nephrons and also tubules.
Therefore, with this data, we can see that the renal medulla is the region where we can find the renal pyramids and this region contains the nephron loops.
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Guys help me what are the two earth systems involved
in the interaction of caribou and ice?
Cyrosphere and biosphere are the two earth systems involved in the interaction of caribou and ice.
What is the result of interaction of caribou and ice?Caribou are a part of the biosphere, a word that refers to all living things on the planet.
Any region of Earth with frozen water is referred to as the cyrosphere. As a result, the interplay of these two systems may be seen in the way that caribou interact with thick frozen ice, which is a component of the cyrosphere. Caribou require this ice to walk on.
The rock cycle, the food chain, the carbon cycle, the nitrogen cycle, the water cycle, and the energy cycle are a few examples found in the Earth system.
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Why is it important to monitor environmental parameters when making policy decisions?
The primary goal of environmental monitoring is to manage and minimize the environmental impact of an organization's activities, either to ensure compliance with laws and regulations or to mitigate risks of harmful effects on the natural environment and protect human health.
The environment is influenced by human activity. in the world, in the world of the world. It is also critical to understand how various human activities affect those environmental factors. Monitoring specific environmental parameters can provide this information. It is critical to monitor environmental changes in order to determine the level and frequency of resource use in specific areas.
Environmental parameters provide information about the internal state and surroundings of the system. The transmission rate, SNR, and BER are examples of internal state information. The channel occupation and channel response are examples of information on the system's surroundings.
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when mendel crossed true-breeding yellow-seeded and true-breeding green-seeded pea plants, all offspring were yellow-seeded. when he took these f1 yellow-seeded plants and crossed them to green-seeded plants, what genotypic ratio is expected for seed color?
When mendel crossed true-breeding yellow-seeded and true-breeding green-seeded pea plants, all offspring were yellow-seeded. when he took these f1 yellow-seeded plants and crossed them to green-seeded plants, the genotypic ratio comes out to be 1:1.
The pattern of gene distribution in a genetic cross's offspring expressed as a ratio is called the genotypic ratio. Consequently, phenotypic ratio. The phenotypic ratio refers to the pattern of physical trait distribution (expressed as a ratio) in a genetic cross's progeny. The genotypic ratio and phenotypic ratio are the two types of genetic ratios used to express the genotype and phenotype of offspring from a genetic cross. The genotypic to phenotypic ratio cannot be predicted with certainty. Additionally, the genotypic ratio cannot be predicted or distinguished based merely on the phenotypic ratio. However, a genotypic ratio can show a phenotypic ratio. The genotypic ratio is a result of Mendel's law of segregation. Mendel's law of segregation states that two alleles segregate in the progeny, with one allele being acquired by half of the progeny and the other half inheriting the second allele. The reason why the kids are not an exact clone of their parents is explained by this law. The genotypic ratio is the proportion that reflects the different genotypes of a test cross' progeny.
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Which of the following would be the most likely result if humans lacked sinuses?
The skull would be heavier than it is now.
Humans would not experience infections.
Humans would lose their ability to smell.
The bone marrow would produce blood cells less efficiently.
Which is not a reactant of photosynthesis?
As a waste product, oxygen is emitted throughout the process. In light of this, oxygen is not required for the process of photosynthesis. Here option A is the correct answer.
As oxygen is released when plants employ their raw materials, such as carbon dioxide and water, to generate sugars, oxygen is not required for the photosynthetic process. Therefore, carrying out the process of photosynthesis is not necessary.
Food is created by plants through the process of photosynthesis, which involves carbon dioxide and water in the presence of sunshine and chlorophyll. As a waste product, oxygen is emitted throughout the process. As a result, oxygen is not required for photosynthesis to occur.
Activate photosynthesizers include plants. They absorb carbon dioxide from the atmosphere and transform it into glucose molecules using the energy from sunshine and water.
Complete question:
Which is not a reactant of photosynthesis?
A - oxygen
B - carbon dioxide
C - water
D - all of these
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Which of these describes the similar functions of capsids and nuclear membranes?
To provide protection describes the similar functions of capsids and nuclear membranes.
The nuclear envelope, conjointly called the nuclear membrane, is formed from 2 supermolecule bilayer membranes that in eukaryotic cells surround the nucleus, that encloses the genetic material. The nuclear envelope consists of 2 supermolecule bilayer membranes: an inner nuclear membrane and an outer nuclear membrane.
The nucleus is ellipsoid of revolution} in shape and separated from the living substance by a membrane known as the nuclear envelope. The nuclear envelope isolates and provides protection to a cell's DNA from numerous molecules that would accidentally harm its structure or interfere with its process.
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The growth hormone axis contains at least one example of a negative feedback loop.a. Trueb. False
A. True. There is a negative feedback loop on growth hormone secretion.
Negative feedback is responsible for saving changes by activating the opposite response. This mechanism occurs in order to stabilize conditions so that homeostasis.some examples of negative feedback loops are regulation of body temperature, blood pressure, Growth hormone secretion, and fluid content.
Growth hormone secretion is controlled by a negative feedback loop mediated by GH releasing hormone. Hormone secretion stimulates the uptake of somatostatin from the hypothalamus. Somatostatin is a GH blocking inhibitor that responds to high concentrations of GH and mediates negative feedback by blocking GHRH stimulation. Somatostatin reduces the rate at which somatotrophs respond to GHRH pulsatility and can reduce the frequency of these GHs.
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true or false? the blind spot in vertebrate eyes is a region of the retina that contains no photoreceptors.
Yes, it is True. the blind spot in vertebrate eyes is a region of the retina that contains no photoreceptors.
The retina is the light-touchy layer of tissue at the back of the eyeball. Pics that come via the attention's lens are focused on the retina. The retina then converts these photos to electric-powered signals and sends them along the optic nerve to the mind.
The retina is a layer of photoreceptors cells and glial cells inside the attention that captures incoming photons and transmits them along neuronal pathways as each electric and chemical indicator for the brain to perceive a visual photo.
The retina includes thousands and thousands of cells packed together in a tightly knit community that unfolds over the surface of the lower back of the attention.
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look at these data showing the species found in four study sites (ss1, ss2, ss3, and ss4) during a research project. which study site has the highest species evenness?
When every species in a sample is present, species evenness is greatest. As relative abundances fluctuate, evenness approaches zero. Indexes like the J' of Pileous can also be used to describe the evenness of species (1975).
The slope of the line reflects species evenness. Low species evenness is shown by a steep gradient, and higher species evenness is indicated by a shallow gradient. A widely used piece of software to create rank abundance plots is the biodiversity R package. A measure of the relative abundances of species within a community is called species evenness. Species richness and species evenness are combined to provide a value that describes a community in quantitative metrics of species diversity like the Shannon Index or Simpson Index. For example, consider a community of three species.
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6. A naturalist is studying changes in the size of populations of marmots. Marmots are large rodents with thick coats that live in cold mountainous climates. The naturalist wants to test the hypothesis that marmots are moving farther north (to higher latitudes) because of global warming. She measured populations of marmots to compare to data collected 50 years ago.
The revised version hypothesis should be:
c. If global temperatures are rising and marmots have a better chance of surviving in colder climates, then there will be more marmots in higher altitudes where the temperature is cooler.
Naturalists' major responsibilities are to inform the public about environmental issues and to preserve the wilderness areas' natural settings. Preserving, regenerating, upholding, and safeguarding a natural habitat are their main duties. Teaching, giving speeches in front of an audience, writing, doing scientific and ecological demonstrations, and managing public relations and administrative duties are some of the duties associated with these positions. Naturalists may work in a range of settings, including independent nonprofit conservation and restoration associations, private nature centers, regional, state, and federal parks and forests, wildlife museums, and private outdoor spaces.
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What is crossing over and why is it important in bringing about variation?
To boost genetic variety, a process called crossing over takes place between homologous chromosomes. Without genetic variation, a species would go extinct. Genetic variation is the root of evolution.
It helps a species survive, it lets us identify individuals, it helps creatures adapt to their environments and to environmental changes, but it also helps a species emerge strong if it is favored by natural selection. If there is less genetic diversity, there won't be as much variety in the qualities, and the species would struggle to adapt to the changes and eventually become extinct. Therefore, a species' genetic diversity is crucial.
A piece of one chromosome is swapped for another during crossing over. A hybrid chromosome with a distinctive genetic material pattern is the end outcome. Each gamete has a unique DNA set because of recombination and independent assortment during meiosis. The resultant zygote has a special set of genes as a result. Prophase is when recombination or crossing across happens.
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