Answers
Organisms are able to interact with each other in a way that keeps the ecosystem going.
What are ecological interactions among organisms?Ecological interactions among organisms refer to the ways in which different species in an ecosystem interact with each other and with their physical environment. These interactions can be grouped into several categories, including:
Predation: One organism (the predator) kills and eats another organism (the prey).
Herbivory: An organism (the herbivore) feeds on plants.
Competition: Two or more organisms compete for the same limited resources such as food, water, or mates.
Mutualism: A relationship in which both species benefit from their interaction with each other.
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Related Questions
1. The chemical in tobacco smoke caused the disease called A. Coronary heart disease B. chronic pulmonary disease C. lung disease D. all 2. Which of the following is correct about short sight? A. Caused by short eye ball C. can be corrected by concave lens B. It is weak lens D light is focused behind the retina 3. The fluid that filled the champers of the eye in front of the lens known as? A. Vitreous humor B. tear C. aqueous humor D. sclera the chemicals in the tobacco smoke affect the wall of your arteries. A. Stroke B. coronary heart disease C. lung disease D. cancer is the part of the retina where the cone cells are too concentrated. A. Blind spot B. fovea C. rods D. cones 6. It is the colored part of the eye that controls the amount of light entering the eye. A. Iris B. pupil C. Choroid D. lens 8. Which one of the following is not the part of human eye? A. Lens B. pupil C. pinna D. cornea 9. Which of the following is correct about short sight? A. It is caused by long eye ball B. to use convex lens C. It is weak lens 10. To carry a nerve impulse from the sensory cells of the retia to the brain? A. Auditory nerve B. optic nerve C. suspensory ligament D. ciliary muscle D. to see clearly distance object
Answers
Answer:
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Explanation:
Answer:1:D 2:c 3:a 4:B (Heart Disease) 5:B (Fovea) 6:A7:There was no 7 8:C 9:a 10:B
Explanation:
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except for the two embryonic leaves, plant leaves develop from the
Answers
Plant leaves, with the exception of the two embryonic leaves, develop from the shoot apical meristem.
The shoot apical meristem (SAM) is a group of proliferating embryonic cells that gives rise to the above-ground part of the plant. They are very organized and stable structures that are able to function for years or even centuries. Apical meristems are present at the growing tips of stems and roots. The main function of the apical meristem is to initiate the growth of new cells in young seedlings at the tips of roots and shoots to form shoots.
The apical shoot meristem of angiosperms produces leaf, stem, and flower structures throughout the life of the plant. To do this, the plant must maintain a population of stem cells in the meristematic tissue while carefully controlling placement and establishment of new leaf bases.
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how does meiosis lead to increased genetic variation?
Answers
Meiosis specifically produces novel genetic material combinations in each of the four daughter cells. These novel pairings are the consequence of DNA switching between linked chromosomes.
There are various ways to identify genetic variation. Observations of phenotypic variation in either quantitative (traits that vary continuously and are coded for by many genes, such as leg length in dogs) or discrete (traits that fall into discrete categories and are coded for by one or a few genes, such as white, pink, or red petal colour in particular flowers) traits can be used to determine genetic variation. [Reference required]
The procedure of protein electrophoresis can be used to examine variation at the level of enzymes in order to detect genetic variation.
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Select the true statement about human population growth.
O Global population has been relatively high throughout history.
Plague and famine caused a decrease in population between 1 AD and
1350.
O In 2012, there were 7.5 billion people on Earth.
The world population doubled in the 40 years between 1959 and 1999.
Answers
Answer:
(C) - In 2012, there were 7.5 billion people on Earth.
The world population doubled in the 40 years between 1959 and 1999.
Explanation:
The rise in population can be attributed to a decrease in death rates and an increase in life expectancy. The world's population saw its quickest increase in growth between 1959 and 1999.
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what term applies to the point at which the membrane returns to resting potential after having been depolarized?
Answers
The term that applies to the point at which the membrane returns to resting potential after having been depolarized is called "repolarization".
To understand this process, it is first important to know what is meant by membrane potential. Membrane potential is the difference in electric charge between the inside and outside of a cell. In neurons, for example, the resting membrane potential is around -70 millivolts (mV), meaning that the inside of the cell is negatively charged compared to the outside. This resting potential is maintained by the action of ion channels that selectively allow certain ions to pass through the cell membrane, creating an electrical gradient.
When a neuron receives a stimulus, it can become depolarized, meaning that the membrane potential becomes less negative or even positive. This happens when positively charged ions, such as sodium (Na+) and calcium (Ca2+), enter the cell. This depolarization can trigger an action potential, which is an all-or-nothing response that allows the neuron to transmit information to other neurons or cells.
However, the depolarization must be followed by a process called repolarization in order for the neuron to be able to fire again. During repolarization, the ion channels allow potassium (K+) ions to leave the cell and restore the negative resting potential. This is a crucial step in neural communication, as it allows the neuron to reset and prepare for the next stimulus.
In summary, repolarization is the process by which the membrane potential of a cell returns to its resting state after having been depolarized. This process involves the movement of potassium ions out of the cell, restoring the negative resting potential and allowing the neuron to fire again.
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6. what does it mean that dna strands are antiparallel and complementary? draw a strand of dna with 6 nucleotides to support your answer.
Answers
DNA strands are antiparallel and complementary means that they are running in the opposite direction but parallel to one another.
Antiparallel is a term used in biochemistry to describe the relationship between two biopolymers that are parallel to one another but run in opposing directions (alignments). One illustration of this concept is provided by the fact that the two strands of a DNA double helix run in the opposite direction beside each other.
Two individual strands of DNA, both of which are single strands, whose nucleotide sequences are designed in such a way that they will pair with each other and bind together at any point along their lengths is called complementary strands.
The structure is attached
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Describe the events of each stage of mitosis. Describe and ILLUSTRATE
Answers
The four stages of mitosis are prophase, metaphase, anaphase, and telophase.
What is mitosis?Mitosis is the process by which a cell divides its nucleus into two genetically identical daughter nuclei. There are four stages of mitosis: prophase, metaphase, anaphase, and telophase.
Prophase:
During prophase, the chromatin condenses into discrete chromosomes, and the nuclear envelope breaks down. The chromosomes become visible under a microscope and consist of two identical sister chromatids, held together at a region called the centromere. The spindle fibers, composed of microtubules, begin to form at opposite poles of the cell and attach to the centromeres of the chromosomes. The spindle fibers will be responsible for pulling the sister chromatids apart during later stages of mitosis.
Metaphase:
During metaphase, the chromosomes line up along the equator of the cell, called the metaphase plate. The spindle fibers attach to the kinetochores, which are protein structures located at the centromeres of the chromosomes. The spindle fibers exert tension on the chromosomes, pulling them toward the center of the cell until they are aligned at the metaphase plate.
Anaphase:
During anaphase, the spindle fibers shorten, causing the sister chromatids to separate at the centromere and move toward opposite poles of the cell. The spindle fibers not attached to chromosomes elongate, pushing the poles of the cell apart and further separating the chromatids. By the end of anaphase, each pole of the cell has a complete set of chromosomes.
Telophase:
During telophase, the nuclear envelope reforms around each set of chromosomes, creating two nuclei. The chromosomes begin to unwind back into chromatin, and the spindle fibers disassemble. The cell undergoes cytokinesis, the process of physically dividing the cytoplasm into two daughter cells. In animal cells, a contractile ring made of actin filaments forms around the cell, pinching it in two. In plant cells, a new cell wall forms between the two daughter cells.
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types of genetic variation that frequently occurs between individuals of the same species include: (select all that apply for credit)
Answers
Types of genetic variation that frequently occurs between individuals of the same species include length of a)chromosmes, e)different alleles, f)CNVs, g)SNPs.So,correct options are a,e,f,g.
Genetic variation is the distinction in DNA among individuals[1] or the distinctions between populations.[2] The numerous wellsprings of hereditary variety incorporate change and hereditary recombination. Transformations are a definitive wellsprings of hereditary variety, however different systems, like hereditary float, add to it, too.
Genetic variation can be distinguished at many levels. Distinguishing hereditary variety is conceivable from perceptions of phenotypic variety in either quantitative characteristics (qualities that fluctuate consistently and are coded for by numerous qualities (e.g., leg length in canines)) or discrete attributes (qualities that fall into discrete classes and are coded for by one or a couple of qualities (e.g., white, pink, or red petal variety in specific flowers)).[citation needed]
Genetic variation can likewise be distinguished by looking at variety at the degree of compounds utilizing the course of protein electrophoresis. Polymorphic qualities have more than one allele at every locus. A big part of the qualities that code for proteins in bugs and plants might be polymorphic, though polymorphisms are more uncommon among vertebrates.
Hence,correct options are a,e,f,g.
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(Complete question) is:
Types of genetic variation that frequently occurs between individuals of the same species include: (select all that apply for credit)
a) lengths of chromosomes
b)numbers of chromosomes
c)different genes
d)different banding patterns on Geimsa stained karyotypes
e)different alleles
f)CNVs
g)SNPs
give a scientific reason for the following (in) the presence of a large central vacuole in a plant cell
Answers
Answer: To store food and water: They are equipped with a large vacuole in comparison to animal cells since the plants are immobile to gin nutrition from surrounding and they need to store as much food they can(an evolutionary feature to support survival).
Explanation:
Neurons communicate by releasing chemicals called _________ into a synapse.
Answers
Neurotransmitters
A neurotransmitter is a molecule or chemical messenger in the body that transmits signals or messages between neurons from a nerve cell to a target cell.
These target cells can be located in muscles, glands, and other nerves. The nervous system that delivers signals works to control organs, psychological functions, and physical functions.
The neurotransmitter is located in a part of the neuron called the axon terminal. They are stored in a thin sac called synaptic vesicles. Each vesicle can contain the mind of a neurotransmitter molecule.
Once the neurotransmitter gets the message, that molecule must be cleared of the new synaptic (the space between the nerve cell and the next target cell).
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Neurons communicate by releasing chemicals called neurotransmitters into a synapse.
Neurotransmitters are chemical messengers that transmit a signal from a neuron across the synapse to a target cell, which can be another neuron, muscle cell, or gland cell. They are like chemical words that function to send 'messages' from one neuron to another.
They play a vital role in communication between the brain and the rest of the body, and are involved in functions such as learning, memory, mood, and sleep.
There are several types of neurotransmitters, such as acetylcholine, dopamine, serotonin, and glutamate. Each of them has its own specific functions and effects on the body.
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what test should be used to specifically identify the strain of bacteria or pathogen affecting the animal?
Answers
To properly identify the bacterial or viral infection infecting the animal, a culture test should be used.
Describe the culture test.Finding germs that can cause an infection, such as bacteria or fungi, requires a test called a culture. A sensitivity test determines the type of medication, such as an antibiotic, that will work the best to treat the illness or infection. An element that encourages the growth of germs is added to a sample of bodily fluid or tissue for culture.
The culture is unfavorable if no bacteria develop. The culture is positive if pathogenic microbes develop. A microscope or chemical tests can be used to determine the type of germ. Other sorts of organisms, including fungi, can take longer to develop in culture than bacteria, which typically do it in two days.
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In this part of the activity, we look at an individual with physical damage to an area
of the brain. Using the material in the textbook and in the Supplementary Material,
determine what specific area of the brain is probably responsible for the deficit
described below.
Terry's speech is slow and labored. He makes errors in the pronunciation of words.
He tries to correct the errors and often gets frustrated as he attempts to speak. He
knows what he is trying to say. He has little inflection (tonal variation) in his speech.
His comprehension is normal except for some grammatically complex material.
A.Broca's area
B.Wernicke's area
C.primary somatosensory area
D.primary visual area
E.primary motor area
Answers
The specific area of the brain that is probably responsible for the deficit is Broca's area. The correct option is A.
What is Broca's area?In order to create a strategy for speaking and transmit that plan to the motor cortex, which manages the movements of the lips, Broca's region interacts with the flow of sensory information from the temporal cortex.
The motor speech area is another name for Broca's area. It is situated in the inferior frontal gyrus, close to the motor cortex, and is used to produce speech.
This region controls the vocalisations necessary for typical speech as well as the breathing patterns used while speaking.
Thus, the correct option is A.
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the enzyme that converts a double-stranded dna region into two single strands by breaking the hydrogen bonds between the strands is called dna
Answers
The enzyme that converts a double-stranded DNA region into two single strands by breaking the hydrogen bonds between the strands is called DNA helicase.
DNA helicases are enzymes that unwind double-stranded DNA into two single strands. This process is an important step in many cellular processes, including DNA
ReplicationTranscription Recombination.DNA helicases are part of a larger family of enzymes called helicases, which play a role in a variety of cellular processes involving the unwinding of nucleic acids. DNA helicases work by breaking the hydrogen bonds between the base pairs in the DNA double helix, allowing the two strands to separate. The separation of the two strands creates a replication fork, which is necessary for the replication of DNA.
Additionally, DNA helicases play a role in DNA repair and in the regulation of gene expression by allowing RNA polymerases to access the DNA template. DNA helicases are important targets for the development of drugs for the treatment of genetic disorders and certain types of cancer.
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Do hiberations and camouflage
have low or high precipitation
Answers
When hibernating, an animal's metabolism slows significantly: its heartbeat slows, it breathes more slowly (some animals even stop breathing for periods of over an hour) and its body temperature drops—in some extreme cases to below freezing point of water (zero degrees Celsius)
Behavioral adaptation: something an animal does usually in response to some type of the external stimulus in order to survive. Hibernating during winter is an example of behavioral adaptation
Camouflage in animals can be reckoned as structural adaptation as it allows it some changes in its external body to survive better in environment around them. It helps them not to get detected by their predators and also as an aid in their hunting for prey.
Hibernation is response to the cold weather and reduced food availability. Most animals that hibernate are quite small and, as weather gets colder, they reach the point where they simply can't eat enough food to sustain their body temperature.
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The carbon cycle is used to explain how (1 point)
O carbon only moves between non-living ecosystems.
O carbon only moves between living ecosystems.
O carbon only moves between the atmosphere and the hydrosphere.
O carbon only moves between living and non-living ecosystems.
Answers
which area of the body has the greatest amount of representation in the human primary somatosensory cortex?
Answers
The human primary somatosensory cortex is responsible for processing information from the sense of touch.
In this area, different regions of the body are represented in a highly organized manner, known as a sensory homunculus. The area of the body with the greatest amount of representation in the primary somatosensory cortex is the fingertips. This is because the fingertips are capable of detecting subtle differences in texture, pressure, and temperature and are therefore very sensitive to touch. As a result, they require a larger area of the cortex to process this information. Other regions of the body with a high level of representation in the primary somatosensory cortex include the lips, tongue, and face, which are also highly sensitive to touch. In contrast, areas of the body with less sensitivity to touch, such as the torso, are represented in a smaller area of the cortex.To know more about cortex visit:
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How does this compare to the two cells at the end of telophase I and cytokinesis I in male cells?
Answers
Unlike the female cells, which did not divide equally, the male cells did. Each cell will contain half of the parent cell's chromosomes when it divides at the conclusion of telophase I and the cytokinesis process.
The cell enters meiosis II and the genetic material is not duplicated once more. The chromosomes complete their journey to their opposing ends during telophase, and the nucleus develops around them. The cytoplasm divides during cytokinesis alongside the organelles. After cytokinesis, two new daughter cells are produced. Telophase and cytokinesis vary primarily in that telophase is the last stage of karyokinesis, which results in the formation of two daughter nuclei. The final stage of cell division, known as cytokinesis, distributes cytoplasm equally across the two daughter nuclei.
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A plant with variegated (two-colored) leaves was left in sunlight for several hours. Pieces of one of its leaves were then detached (removed) and tested for starch. The diagram below shows the results. Explain, as fully as you can, why the yellow region of the leaf had not produced starch.
Answers
The yellow region of the leaf as shown in the diagram had not produced starch because it does not contain chlorophyll pigment which is responsible for photosynthesis.
What is Photosynthesis?Photosynthesis is a process which is used by plants and other living organisms to convert light energy or sunlight into chemical energy in the form of chemical bonds present in carbohydrates (glucose) produced through it, through the process of cellular respiration, these carbohydrates can later be released to fuel the organism's activities with ATP (energy).
The variegated or the yellow part of the leaf of the plant as shown in the diagram does not contain chlorophyll pigment which is used to perform the process of photosynthesis in plants. Absence of chlorophyll pigment and photosynthesis in that region of the plant prevents the formation of starch in the yellow region of the plant.
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What could happen to the human population if Earth’s resources were completely used up?
Answers
Answer:
If Earth's resources were completely used up, the human population could face serious consequences, including food and water shortages, energy crises, and economic instability. In the long term, it could lead to a decline in human numbers and potentially even extinction. Therefore, it is important to manage Earth's resources sustainably, to ensure their availability for future generations.
Answer:
If Earth's resources were completely used up, the consequences for the human population would be severe.
Firstly, the availability of basic necessities such as food, water, and energy would become scarce, leading to widespread famine, thirst, and lack of power. The depletion of resources such as oil, natural gas, and coal would cause the collapse of modern transportation, industry, and communication systems, leading to widespread poverty and social upheaval.
Moreover, without natural resources such as forests, minerals, and fertile soil, the human population would face environmental degradation and loss of habitat. This would lead to a decline in biodiversity and a reduction in the availability of essential ecosystem services, such as pollination and pest control.
In addition, the depletion of resources could lead to conflicts over the remaining resources, with countries, communities, and even individuals vying for control of the dwindling supplies. This could result in war, violence, and mass migration, leading to further instability and suffering for the human population.
In conclusion, if Earth's resources were completely used up, the consequences for the human population would be far-reaching and devastating, with severe impacts on health, security, and well-being.
what would have been the expected results in the experiment if the plasma membrane had been freely permeable to the salt as well as to the water
Answers
The works urged that salt pressure is more clear than osmotic pressure in disturbing the membrane penetrability and calcium particles can forestall the grown porousness got about by osmotic or ionic pressure.
On the off chance that the cell layer became penetrable to most substances, the cell wouldn't be at homeostasis and it would kick the bucket. The cell layer makes a steady, interior climate inside the cell.
A crack or separation of the plasma layer would bring about the openness of the cell parts to the outside climate and would eventually bring about cell passing.
At the end of the day, plasma layers are specifically penetrable — they permit a few substances through but not others (Figure 1). On the off chance that the layer was to lose this selectivity, the cell would as of now not have the option to keep up with homeostasis or to support itself, and it would be obliterated.
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starch, cellulose, glycogen, and polypeptides are all made from chains of many subunits, or building blocks. what is the name given to a chain composed of many subunits?
Answers
Starch, cellulose, glycogen, and polypeptides are all made from chains of many subunits, Polymer is the name given to a chain with multiple subunits.
Any group of natural or synthetic substances known as polymers is made up of very large molecules called macromolecules, which are multiples of monomers, which are simpler chemical units. Numerous minerals and man-made materials are based on polymers, which are the basis of many living materials.
Polyester, Teflon, epoxy, nylon, and polyethylene are all examples of synthetic polymers. Natural polymers can be extracted from nature. They frequently contain water. Silk, wool, DNA, cellulose, and proteins are a few examples of naturally occurring polymers.
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some viruses are associated with cancer. there are a variety of ways in which viruses may affect a cell in a way that may lead to the formation of a tumor. based on your knowledge of the life cycles of viruses and of molecular genetics, what is one way that this might happen?
Answers
A large portion of the cancer research community is unaware of the significant burden that viral infections have on cancer patients.
According to the International Agency for Research on Cancer, viruses are the primary cause of one in five cancer cases worldwide1,2. These malignancies pose unique public health issues for underprivileged and immunosuppressed populations in rich nations as well as the developing globe. Most significantly, there are clear objectives for diagnosis, prevention, and treatment of these malignancies.
On a global level, vaccination campaigns against the hepatitis B virus (HBV) and the human papillomavirus (HPV), two human tumour viruses, have already started to change long-standing cancer patterns. This Timeline article examines how modern technology can be used to identify infectious and describes common characteristics of human cancer viruses.
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What are 5 basic differences between prokaryotic and eukaryotic gene structure?
Answers
Answer:
The structure and chemical composition of the DNA in both the eukaryotic and prokaryotic cells are different. The prokaryotic cells have no nucleus, no organelles and a very small amount of DNA. On the other hand, the eukaryotic cells have nuclei and cell organelles, and the amount of DNA present is large.
Explanation:
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what is it called when two viruses of the same type infect an individual at the same time and swap genes?
Answers
Viral reassortment occurs when two viruses of the same type infect a person simultaneously and swap genes.
Describe reassortment.Reassortment is the blending of a species' genetic components into novel combinations in various people. Chromosome crossover and reassortment are two of the many processes that contribute to this process. It is especially useful when two viruses that are infecting the same cell and are identical to one another exchange genetic material.
Reassortment is especially common in influenza viruses, which have genomes made up of eight different RNA segments. Every time a flu virus is put together, one copy of each of these segments is needed since they function like mini-chromosomes.
It is feasible that freshly assembled viral particles will be formed from segments whose origin is mixed, coming from one strain and another, if a single host is infected by two separate strains of the influenza virus.
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how are nutrition and genetics linked? multiple select question. genes determine nutrient requirements. genes influence development of some nutritional diseases. nutrients affect gene expression. nutrition really doesn't have an effect on gene expression.
Answers
The nutrition and genetics are linked as: (1) genes determine nutrient requirements; (2) genes influence development of some nutritional diseases; and (3) nutrients affect gene expression.
Nutrition refers to the phenomenon of intake of nutrients through the food. A food product is said to be nutritious if it consists of some beneficial nutrient like vitamins, good fat, right amount of carbohydrates, etc. Nutrients are essential for the body to healthy and active.
Gene expression refers to the process which transforms the information encoded in the DNA into its functional form, i.e., proteins. The gene expression is comprised of three processes: replication, transcription and translation.
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what is the main cause of cancer? question 7 options: a) exposure to carcinogens in the environment b) old age, during which the cells of the body no longer work properly c) dna replication no longer working properly d) we do not currently know the main cause of cancer.
Answers
We do not know what the primary cause of cancer is at this time. Here option D is the correct answer.
Cancer is a complex disease that can result from a combination of genetic and environmental factors. While exposure to carcinogens in the environment and the aging process can contribute to the development of cancer, it is not accurate to say that these factors are the main cause of cancer.
DNA replication is a crucial process that occurs in all cells, and when it no longer works properly, it can lead to the development of cancer. However, it is also not accurate to say that DNA replication no longer working properly is the main cause of cancer.
There is still much that is not understood about the causes of cancer, and scientists and medical researchers are actively working to uncover the underlying mechanisms that lead to this disease. While there are known risk factors, such as exposure to carcinogens and aging, it is not possible to identify a single main cause of cancer.
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which of the following plant hormones is associated with the closure of stomata in a plant under water stress? question 3 options: abscisic acid auxin cytokinin ethylene
Answers
Abscisic acid (ABA) is the plant hormone linked to a plant's stomata closing when it experiences water stress.
A number of plant responses to environmental stress, such as drought stress, require abscisic acid. By blocking the stomata, which are tiny pores on the surface of leaves that allow for gas exchange between the plant and the atmosphere, ABA is produced during times of water stress and works to prevent water loss. The plant is able to preserve water and stop excessive transpiration, or water loss through the stomata, by closing the stomata. Auxin, on the other hand, plays a role in the growth and development of plants, including the lengthening of stems and the start of roots. Cell division is aided by cytokinin, which also aids in controlling growth and development. A hormone called ethylene regulates a number of plant activities, including fruit ripening and the plant's reaction to stress and injury. Under drought conditions, the concentration of ABA in leaves multiplies many times. Its buildup in plants encourages stomata closure and stops water loss through transpiration. By promoting stomatal closure, ABA is needed in drought-like circumstances to restore the turgor pressure.
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g as a result of a mutation that disrupts the nuclear localization signal of a protein, the protein will now ... a: be translocated into the er b: be ubiquitinated and degraded c: be remained in the cytoplasm d: be exported into extracellular matrix (ecm) e: be stuck in the nuclear pore
Answers
The correct answer is Option C: be remained in the cytoplasm. If a mutation disrupts the nuclear localization signal of a protein, the protein will not be able to enter the nucleus, so it will remain in the cytoplasm.
When a mutation disrupts the nuclear localization signal of a protein, the protein will not be able to enter the nucleus, so it will remain in the cytoplasm. This is because nuclear localization signals are responsible for directing proteins to the nucleus, and without them, the proteins will be unable to enter the nucleus. By remaining in the cytoplasm, these proteins may be able to interact with other proteins or molecules and perform their normal functions.
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Which of the following is not a source of genetic variation?
A. Cross over of homologous Chromosomes.
B. Random fertilization of eggs by sperm.
C. Mitosis of fertilized eggs.
D. Independent assortment of chromosomes.
Answers
Mitosis of fertilized eggs is not a source of genetic variation.
Which of the following is not a source of genetic variation?Genetic variation consequences in different forms, or alleles of genes. For example, if we look at eye color, people with blue eyes have one allele of the gene for eye color, whereas people with brown eyes will have a dissimilar allele of the gene. examples of genetic variation include eye color, blood type, camouflage in animals, and leaf moderation in plants.
The most usual form of genetic variants among individuals is the smallest, known as single nucleotide polymorphisms (SNPs) Mutations are the original source of genetic variation that happens when there is an error during DNA replication that is not corrected by DNA mend enzymes.
So we can conclude that Genetic variation is a term used to explain the variation in the DNA sequence in each of our genome
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Water pollution review …
1. When neighborhood resident noticed a large number of dead fish in a local creek they traced the problem to a nearby gas station. It turned out that a gasoline tank has developed a leak this is an example of
A. Point-source, B. nonpoint -source pollution, C. thermal pollution, D. groundwater pollution.
2. Which of the following is a point-source? A. An abandoned mine, B. Runoff city streets, C. Precipitation containing air pollution, D. Runoff from farms.
3. What would the drawbacks be to a wastewater plant connected to a water treatments facility?
A. Increased energy usage, B. Decks matter in the water, C. There are no real drawbacks, D. An overabundance of wastewater would get pumped directly into our water resources .
Answers
2. D) Runoff from farms
3. D) Abundance of wastewater ..