Which term best describes the difference in colors of the birds below?
Natural selection. Reproduce maturity Genetic variation.
Genetic drift
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Ans.
The birds given below are showing a population with different color feathers. These variations are known as genetic variation that involves difference in DNA sequence or genotype between the organisms within a population. Difference in genotype leads to difference in their phenotypic characters (physical appearance).
Thus, the correct answer is option). 'genetic variation.'
Related Questions
One method of lessening the environmental impact of strip mining is to -
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Final answer:
To reduce the environmental impact of strip mining, land can be reclaimed for various uses, waste products utilized to create new materials, and bioremediation can neutralize contaminated water. In addition, promoting alternative practices such as minimal tillage can limit further damage.
Explanation:
One method of lessening the environmental impact of strip mining is to reclaim and repurpose the land after mining operations have ceased. Mining often leaves behind vast areas of disturbed land; however, such land can be rehabilitated and transformed into beneficial uses such as airports, landfills, and golf courses. Furthermore, the waste produced from mining operations, such as synthetic gypsum from scrubbers, can be utilized to make products like cement and wallboard, instead of being discarded as waste. This approach not only reduces the amount of waste sent to landfills but also conserves natural resources.
Beyond land reclamation, introducing bioremediation methods is also crucial. The use of bacteria to neutralize acidic water and detoxify chemical by-products from acid mining is an example of using natural processes to restore the habitat, making it suitable for animals and plants. Actions like these help to prevent pollution, save energy, and increase economic security by relying on domestic sources of reclaimed materials.
Lastly, policymakers and activists advocate for alternative mining practices, such as minimal tillage, which can reduce environmental damage while still fulfilling economic needs. Combination of such practices with reforestation and habitat restoration can further stabilize ecosystems and help in recovery of biodiversity.
Some plant roots grow with mycorrhizal fungi. the fungi absorb water and minerals and pass them on to the plant and receive carbohydrates from the plant. this is an example of -
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Plant roots that grow with mycorrhizal fungi create a mutualistic relationship called mycorrhiza, where the fungi aid in water and mineral absorption while receiving carbohydrates from the plant.
The symbiotic relationship described, where plant roots grow with mycorrhizal fungi, is an example of mutualism, specifically a fungal and plant partnership known as mycorrhiza. The fungi absorb water and minerals from the soil and pass them on to the plant, while in return, the plant provides carbohydrates, produced through photosynthesis, to the fungi. This relationship benefits both organisms as the fungi obtain a steady supply of glucose while the plant increases its nutrient uptake and improves water absorption, thanks to the large surface area of the fungal mycelia consisting of hyphae that effectively facilitate these processes. Phosphorus and nitrogen are two key minerals that are more efficiently absorbed by plants due to the association with mycorrhizae.
After tcs food has reached 165 degrees in a microwave oven the food should be
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Temperature Control for Safety (TCS food) is food that requires time and temperature control for safety. It has to be cooked to its minimum internal temperature, and hold that temperature for a specific amount of time to reduce pathogens to safe levels.
TCS foods—include milk and dairy products, eggs, meat (beef, pork, and lamb), poultry, fish, shellfish, cooked rice, beans, and vegetables.
After tcs food has reached 165 degrees in a microwave oven the food should be covered, and stirred during the cooking process. After cooking, allow two minutes stand time before serving.
After tcs food has reached 165 degrees in a microwave oven the food should be allowed two minutes stand time before serving.
Further explanationTime and Temperature Control (TCS) Foods is the foods that need time and temperature control for safety, to prevent the growth of microbes on them. The longer food is in the temperature danger zone, hence the more time pathogens have to grow. The Time and temperature control for safety foods cooked in a microwave must be cooked to 165 F.
After tcs food has reached 165 degrees in a microwave oven the food should be covered, and stirred during cooking process. After cooking, allow two minutes stand time before serving
Temperature danger zone for Time and Temperature Control (TCS) Foods is 41 to 140 F. We should reduce the amount of time TCS food spends in the temperature danger zone. If food is held in this range for four or more hours, you must throw it out. TCS food that stays in the Temperature Danger Zone doe 4 hours or longer must be thrown out because it could provide microorganisms to grow in the food.
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Answer detailsGrade: 9
Subject: biology
Chapter: tcs food
Keywords: tcs food
Which procedure is performed to affix sagging breasts in a more elevated position??
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Mastopexy is known as the plastic surgery mammoplasty procedure for raising sagging classification of breasts upon the chest of the female individual, through the use of changing and modifying the size, contour, and elevation of the female's breasts.
Final answer:
A breast lift, also known as mastopexy, is performed to affix sagging breasts in a more elevated position. It involves removing excess skin and reshaping the breast tissue to achieve a more youthful and uplifted appearance.
Explanation:
The procedure performed to affix sagging breasts in a more elevated position is called a breast lift, also known as mastopexy. This is a surgical procedure that involves removing excess skin and reshaping the breast tissue to achieve a more youthful and uplifted appearance.
During a breast lift, the surgeon will make incisions usually around the areola and may extend vertically and horizontally depending on the amount of sagging. The breast tissue is then lifted and reshaped, and any excess skin is removed. The nipples and areolas are repositioned to a higher position on the breast.
It's important to note that a breast lift does not significantly change the size of the breasts or provide a fuller appearance. If a patient desires both a lift and an increase in breast size, a breast augmentation with implants may be recommended.
There can be advantages to using fossil fuels. What is one advantage?
A)Fossil fuels are a nonrenewable source of energy, because they are primarily made from the remains of ancient plant and life matter.
B)Fossil fuels are inexpensive and readily available with existing equipment. C)The burning of fossil fuels releases carbon dioxide in the environment, contributing to climate change.
D)The burning of fossil fuels releases harmful chemicals into the environment.
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Answer: B)Fossil fuels are inexpensive and readily available with existing equipment.
Explanation:
The fossil fuels are the fuels that are produced inside the heap of the earth crust. These are produced as a result of the geological and biological processes occurring under the surface of earth. These includes the hydrocarbons such as coal, crude oil, natural gas which are formed from the dead remains of the plants and animals.
These fuels are the non-renewable source of energy and these produce large amount of carbon dioxide on burning, this can lead to global warming.
The main advantage associated with these fuels is that they are inexpensive because of the appreciable volume of availability in some regions of the world.
In most cases, cardiopulmonary arrest in infants and children is caused by: select one:
a. a drug overdose.
b. a cardiac dysrhythmia.
c. severe chest trauma.
d. respiratory arrest.
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In several neurological diseases, axons lose their insulating myelin sheath. what is the consequence of this loss
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Hemoglobin is the iron-containing compound that carries oxygen in the bloodstream?
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________________
True. Hemoglobin is the iron-containing compound that carries oxygen in the bloodstream.
What is Hemoglobin?Hemoglobin is an iron-containing protein found in red blood cells that plays a crucial role in transporting oxygen from the lungs to the various tissues and organs of the body.
It binds to oxygen in the lungs, where oxygen concentration is high, and releases it in tissues with lower oxygen levels.
This process is essential for the delivery of oxygen to cells and the removal of carbon dioxide, a waste product of cellular respiration, from the tissues.
Hemoglobin's ability to bind and release oxygen is facilitated by its iron component, which can reversibly bind to oxygen molecules.
Thus, Hemoglobin is the iron-containing compound that carries oxygen in the bloodstream.
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When one competitor species eliminates another competitor from the habitat, it is called ___________?
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There is a principle called the competitive exclusion principle or Gause's law referring to the relationship between two species competing for the same limiting resource which cannot coexist. The minimal advantage of one species will dominate and lead either to the extinction of the weaker competitor or to an evolutionary shift toward a different ecological niche.
why is stop and start codon signals necessary for protein synthesis ?
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The stop codons and the start codon are fundamental because these codons SPECIFY the length of the resulting PROTEIN SEQUENCE during protein synthesis (translation).
A codon is a triplet of nucleotides in the messenger RNA (mRNA) that determines a specific amino acid, which will be added to the nascent polypeptide chain (i.e., the protein) during translation.
There are 64 codons, 61 of which encode 20 different amino acids, whereas 3 codons specify stop signals that end the process of translation (UAG, UAA, and UGA).
The codon AUG is the first codon in the transcribed mRNA sequence, which encodes the methionine amino acid.
Both start codons and stop codons are fundamental because they indicate where to start and where to finish the process of protein synthesis, respectively.
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Smoke form forest fires is most likely to affect air quality over larger areas for many days when ...
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Smoke from forest fires is most likely to affect air quality over larger areas for many days when "a persistent atmospheric inversion exists in the region."
I hope my answer helped you. Have a nice day!
Forest fire smoke affects large area air quality over many days when favorable wind conditions are present, there are larger fires, and the burning is persistent.
Explanation:Smoke from forest fires is most likely to affect air quality over larger areas for many days when there are favorable wind conditions, larger fires, and persistent burning. Favorable wind conditions help to disperse the smoke satisfactorily over a vast area, maintaining its presence in the atmosphere for a longer duration. The larger the fire, the more smoke is produced, leading to a more significant impact on air quality over an extensive area. Lastly, persistent burning causes continued production of smoke, hence more extended periods of polluted air.
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Plants inherit genes that enable them to produce chlorophyll, but this pigment is not produced unless the plants are exposed to light. this is an example of how the environment can
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Light has an important role in gene expression in plants by producing a number of light-induced changes. One of the examples of the light effects is that chlorophyll and the proteins required for assembling the photosynthetic apparatus are synthesized together with the enzymes needed for carbon fixation. Gene expression influenced by light includes the regulation at the level of transcription or, alternatively regulation of translation.
The correct answer is option 2. The scenario described, where plants have the genetic capability to produce chlorophyll but only do so when exposed to light, is an example of how the environment can influence the expression of a genetic trait.
Environmental factors, such as light exposure, can regulate the expression of genes responsible for producing chlorophyll, demonstrating that the environment plays a crucial role in the manifestation of genetic traits.
Why other options are not correct:
Option 1 is incorrect because mutations are changes in the DNA sequence. The scenario describes the activation of an existing gene by an environmental factor (light), not a change in the DNA sequence itself.
Option 3 is incorrect because the production of chlorophyll in response to light exposure does not lead to the formation of a new species. Speciation is a much more complex process involving genetic divergence and reproductive isolation over many generations.
Option 4 is incorrect because the scenario given does not compare different plant species or their reactions to light. It simply explains how light exposure affects the production of chlorophyll in plants in general.
The complete question is:
Plants inherit genes that enable them to produce chlorophyll, but this pigment is not produced unless the plants are exposed to light. This is an example of how the environment can
(1) cause mutations to occur.
(2) influence the expression of a genetic trait.
(3) result in the appearance of a new species.
(4) affect one plant species, but not another.
A woman frequently has a dinner meal of grilled steak, baked potato with margarine, green peas, and a white dinner roll. which food should be eaten less often to reduce her risk of breast cancer?
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Grilled steak should be eaten less often to reduce her risk of breast cancer. When meats are cooked at high temperatures such as grilling or pan frying, there is production of polycyclic aromatic hydrocarbons and heterocyclic amines which are chemicals that can trigger changes to the DNA and this can increase breast cancer risk.
The grilled steak should be consumed less frequently to reduce her risk of breast cancer due to a correlation between high intake of red meat and increased breast cancer risk. A diet rich in fruits, vegetables, lean proteins, and whole grains is recommended.
Explanation:To reduce her risk of breast cancer, the woman should consider eating the grilled steak less often. Although, it's important to note that a balanced diet and regular exercise contribute significantly to overall health. Epidemiological studies indicate a positive correlation between high intake of red meat such as steak and an increased risk of breast cancer. Instead, a diet rich in fruits, vegetables, lean proteins, and whole grains is recommended. Regular physical activity is also as important as a nutritious diet.
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Which of these species is most closely related to Felis rufus?
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The cougar is most closely related to Felis rufus, or the red fox.
Explanation:According to the phylogenetic tree, the cougar is most closely related to Felis rufus, or the red fox.
How do animals in the desert defend themselves from predators?
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Some emit a slime when scared that will make the predator ill like toads.
Some use camouflage.
Some have thorns on them Like the porcupines.
Answer:
anything with there claws
Explanation:
As you reach for a rose, you unexpectedly feel the painful poke of a thorn. you quickly withdraw your hand. which part of this process is accomplished mainly by the central nervous system?
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"The stimuli input"
it is the stimuli that are perceived by our senses like smell, sight, touch, taste, and hearing.
"Integration" and "motor output"
which is the function of three inputs – sensory, cognitive, and intrinsic.
Sperm whales, a(n) species, maintain their populations close to carrying capacity.
r-selected
k-selected
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K selected species are those species, whose population fluctuate at or near the carrying capacity. The carrying capacity of a specie refers to the maximum population size of a specie, which the environment can sustain indefinitely. K selected species have stable population and they usually reproduce low number of offspring.
A species found only within a certain region is said to be _________ to that region.
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endemic species to that region. Endemic species are organisms that exist only in one geographic region. Some of the species are endemic to a particular continent or part of it others to a single island, but usually, that region is isolated in some way, so that species have difficulty spreading to other areas. It is also possible that the habitat of endemic species has unusual environmental characteristics to which endemic species are specifically adapted.
After filtering by the nephron, where does the cleaned blood go
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Answer: renal vein
Urine passes thru large channels called (ducts) which drain into the renal pelvis or (inner part of the kidney). Next, the urine passes thru a ureter then afterward goes from each kidney to the bladder. Urine is then stored in the bladder while the “cleaned' (filtered) blood” from each kidney go into a large blood vessel called the renal vein. This vein gets the blood back to the heart.
Answer:
renal vein
Explanation:
apex
A unique trait that is used to construct a cladogram showing relationships between organisms is called a
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Wetlands ________.
a. are important in improving water quality
b. are bodies of swiftly flowing water
c. are found in the intertidal zone
d. include rivers, streams, po
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I hope this helps!
The wetland ecosystem is different from the ecosystems of other water bodies like the ponds, streams and lakes. Wetlands are inundated by water permanently or seasonally. These lands have unique vegetation of aquatic plants that are adapted to hydric soil.
A rich and healthy wetland ecosystem has a wide diversity of plants and animals that act as filtering systems in removing sediments and impurities from water making it cleaner.
Hence the right option for this question is a
In sea urchins, the process of fertilization produces a(n) _____. in sea urchins, the process of fertilization produces a(n) _____. archenteron morula gastrula gamete zygote
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Zygote
Zygote is known to be eukaryotic cell that formed from the fertilization of two gamates. Thus, it is when fertilized egg cell result from the union of a male gamete (sperm) with a female gametes (Ovum).
What are some common signs and symptoms of mental health disorders?
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Describe why the lymphatic system is often compared to the cardiovascular system. discuss differences and simialatities.
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Hyenas and lions have fierce battles over food. Which type of relationship does this describe?
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Competition is the type of relationship that describes the condition between Hyenas and lions.
What do you mean by Species interaction?Species interaction may be defined as the population of one species that may interact with the population of other species that live in the same locality.
When the members of two different species are fighting for the same resource. The relationship between them is competition.
Therefore, competition is the type of relationship that describes the condition between Hyenas and lions.
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false or deliberately inaccurate information
(2 words, 8 letters)
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The riskiest sexual activity in terms of contracting hiv is
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What kind of sensory adaptation would you hypothesize the cave fish has to allow it to navigate in a cave, including catching and eating food.
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The kind of sensory adaptation that the cave fish would have is :
Presence of sense organs on the surface of the cave fishSense organs
The presence of sense organs on the surface of the cave fish will allow the fish detect the presence of prey in the water and also the presence of different chemicals in the water as well.
Navigating through the cave is aided by the pair of eyes also present on the surface of the fish head.
Hence we can conclude that the e kind of sensory adaptation that the cave fish would have is : Presence of sense organs on the surface of the cave fish
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What happens to rna polymerase ii after it has completed transcription of a gene?
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After completing transcription, RNA polymerase II is released from the DNA template, and the pre-mRNA undergoes processing to become a mature mRNA molecule.
Explanation:After RNA polymerase II has completed transcription of a gene, it is released from the DNA template. At this point, the newly synthesized RNA molecule, known as the primary transcript or pre-mRNA, undergoes several processing steps.
The primary transcript is modified by the addition of a cap and a poly-A tail, and introns (non-coding regions) are spliced out to form the mature mRNA. Once these modifications are complete, the mature mRNA molecule can exit the nucleus and undergo translation to synthesize a specific protein.
In summary, RNA polymerase II dissociates from the DNA template after transcription, while the pre-mRNA undergoes processing to become a mature mRNA molecule.
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_____may have evolved from aerobic bacteria and ____ may have evolved from photosynthetic cyanobacteria engulfed by a predatory cell.
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Mitochondria; chloroplasts