The American chestnut tree is susceptible to the chestnut blight fungus while the Asian chestnut tree is not. Scientists are using backcross breeding to restore the American chestnut population by integrating the disease-resistant trait from the Asian trees. Fungus also cause serious infections in other species causing significant decline or extinction.
Explanation:The American chestnut tree is susceptible to a fungus called Cryphonectria parasitica, which causes chestnut blight. This disease is virtually absent in Asian chestnut trees, which have co-evolved with the fungus and developed a level of resistance. This resistance likely involves chemical defenses that are present in Asian species but lacking in the American species.
Scientists are leveraging this fact to help them restore the American chestnut population by using a process called backcross breeding. This involves crossing the resistant Asian chestnut with the susceptible American chestnut, and then continually crossing the offspring with American chestnuts to maintain the American chestnut characteristics while integrating the disease resistance trait from the Asian tree.
Fungi often interacts with other organisms, bearing mutualistic associations or causing serious infections. For example, fungal infections have caused significant decline in world's frog population and have killed millions of bats in the United States.
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Scientists are leveraging the natural resistance of Asian chestnut species to Cryphonectria parasitica to develop blight-resistant American chestnut trees. This involves traditional breeding methods, genetic engineering, and restoration efforts to restore the once-dominant American chestnut tree in its native ecosystems.
The American chestnut (Castanea dentata) is susceptible to a fungal pathogen called Cryphonectria parasitica, which causes chestnut blight. This fungus entered North America in the early 20th century and devastated the American chestnut population. The Asian chestnut species, such as the Chinese chestnut (Castanea mollissima), have co-evolved with Cryphonectria parasitica and developed resistance mechanisms against it. Here’s how scientists are using this knowledge to address the problem:
1. Understanding Resistance Mechanisms: By studying the genetic and biochemical mechanisms that confer resistance in Asian chestnut species, scientists can identify genes and traits that make these species tolerant or resistant to chestnut blight.
2. Breeding Programs: Scientists are using traditional breeding techniques to cross American chestnut trees with resistant Asian chestnut species. The goal is to transfer genes for blight resistance from Asian chestnuts into American chestnuts while retaining the desirable traits of the American chestnut, such as its size and timber quality.
3. Genetic Engineering: Advances in biotechnology allow scientists to directly insert genes responsible for blight resistance into American chestnut trees. This approach, known as genetic engineering or genetic modification, can potentially expedite the development of blight-resistant varieties.
4. Citizen Science and Restoration Efforts: Collaborative efforts involving citizen scientists, conservation organizations, and academic institutions aim to reintroduce blight-resistant American chestnut trees into their native habitats. These efforts also involve monitoring and evaluating the ecological impact of reintroducing genetically engineered or hybrid American chestnuts.
During the Calvin cycle of photosynthesis, a plant cell uses carbon dioxide to synthesize large carbohydrates.
Which statement about this reaction is true?
A. energy is consumed.
B. It is a catabolic pathway of metabolism.
C. ATP is produced.
D. It is an exergonic reaction.
The true statement is that A. energy is consumed.
Where is the energy consumed?People use a whole lot of electricity in homes, in organizations, and in enterprises, and to travel and deliver goods. There are four end-use sectors that purchase or produce power for their own consumption and now not for resale: The residential zone consists of houses and apartments.
General energy intake is made of production plus imports, minus exports, minus global marine bunkers plus/minus stock modifications. It's also known as general primary energy delivery or Gross inland energy intake and represents the quantity of all strength necessary to satisfy inland intake.
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will give brainliest
can choose more than one
Which of the following statements about genes and traits is true?
A single gene can control a single trait.
A single gene can influence multiple traits.
A single trait can be controlled by multiple genes.
A single trait can alter multiple genes.
Answer: A single gene can influence multiple traits
Explanation: One Gene Can Affect Multiple Traits. How can a mutation in one single gene cause a disease with a wide range of symptoms? This situation is referred to as pleiotropy, and it has been identified in a wide range of species, even humans. ... A pleiotropic gene is a single gene that controls more than one trait.
Name three ecosystem services provided by
biodiversity.
Answer:
Ecosystem services, such as Protection of water resources Soils formation and protection Nutrient storage and recycling Pollution breakdown and absorption Contribution to climate stability Maintenance of ecosystems Recovery from unpredictable events Biological resources, such as Food Medicinal resources and pharmaceutical drugs Wood products Ornamental plants Breeding stocks, population reservoirs Future resources Diversity in genes, species and ecosystems Social benefits, such as Research, education and monitoring Recreation and tourism Cultural values
Explanation:
food
medicine
wood products
ornamental plants
breeding stocks
future resources
genetic diversity
Answer:
food
medicine
wood products
ornamental plants
future resources
genetic diversity
Explanation:
any of these answers are ecosystem services provided by biodiversity.
correct on edg
What is the term for the ordering of organisms into categories, such as orders or families?
Answer:
Explanation:
Classification: In biology, classification is the ordering of organisms into categories, such as orders, families, and genera, to show evolutionary relationships.
Homologous Traits: Structures that are shared by species on the basis of descent from a common ancestor.
Taxonomy is the process of ordering organisms into categories such as orders or families, based on shared characteristics. It forms a hierarchy starting from Domain and going down to Species.
Explanation:The process of ordering organisms into categories such as orders or families is referred to as Taxonomy. This system was developed by the Swedish botanist Carl Linnaeus in the 18th century. In this process, organisms are classified based on shared characteristics into a hierarchy of categories. These categories from broad to specific are: Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species - often remembered by the mnemonic 'Did King Philip Come Over For Good Soup?'. Each subsequent category is a subdivision of the one before. For example, within the 'Order' of Carnivora, we have 'Families' like Felidae (cats) and Canidae (dogs).
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What point is Huxley making about human nature and the nature of human communities?
The point that makes is that these are problems which can not be solved.
Explanation:
The point that Huxley makes about the nature of human and the nature of the communities of the human is that these are certain problems and such problems are not solvable.
Social engineers like Mustapha Mond ends up asking the questions like what is that thing which prevents the people from being happy in their lives. And after knowing that thing, there should be efforts made to remove the source of unhappiness of the people.
In wich structure is all genetic information of an organisism found
Answer:
The nucleus / DNA
Explanation:
The DNA is where all genetic information is and it is stored in the nucleus of each cell.
are there insect parts in everything we eat
Insects or insect parts can end up in some food products due to various factors like agricultural practices, food processing, and packaging.
The presence of insect parts in food is often regulated and kept to a minimum by food safety standards, but it is nearly impossible to completely eliminate them.
For example, in products like peanut butter, chocolate, canned fruits and vegetables, and even wheat flour, there may be trace amounts of insect parts due to natural contaminants or processing methods. However, stringent quality control measures are in place to ensure that these levels remain within acceptable limits for human consumption.
Students were asked to create a model of stem cell differentiation. The diagram shown is the model that they created and used to help them explain cell differentiation. Based on the model, what process is referred to as self-renewal?
A. Mitosis
B. Differentiation
C. Meiosis
D. Specialization
Answer:
D. Specialization
Explanation:
The cell is changing its form to fill out a certain task.
Scientists have developed a variety of genetically modified (GM) crop plants. They may develop many new varieties in the future. Evidence
MOST STRONGLY supports which of these predictions about genetic technology and the world's food supply?
A
Genetic technology will have no measurable effect on the food supply
B. Genetic technology will increase the cost of many foods and harm their quality
C. Genetic technology will improve the quality of many foods, but also increase their cost.
D. Genetic technology has the potential to reduce the cost of many foods and improve their quality
Answer:
DExplanation:
1. A genetically modified (GM) or transgenic crop is a plant that has a combination of genetic material of two or more than two organisms, and it is obtained by the use of modern biotechnology.
2. Example: a genetically modified crop can contain a gene or genes of other organisms that has been artificially inserted instead of the plant acquiring it through pollination.
3. Genetic technology has the potential to reduce the cost of many foods and it can improve their quality as well as quantity.
Answer:
d
Explanation:
just hd it
Male-pattern baldness is a X-linked recessive trait, labelled X^{\text{b}}
b
start superscript, start text, b, end text, end superscript, with the dominant normal hair gene being X^{\text{B}}
B
start superscript, start text, B, end text, end superscript.
A father with the genotype X^{\text{B}}
B
start superscript, start text, B, end text, end superscriptY and a mother with the genotype X^{\text{b}}
b
start superscript, start text, b, end text, end superscriptX^{\text{b}}
b
start superscript, start text, b, end text, end superscript have a son.
What is the percent chance that the son will inherit male-pattern baldness?
Answer:
100%
Explanation:
Pattern baldness if X linked and recessive.
A father with [tex]X^BY[/tex] and a mother with [tex]X^bX^b[/tex] have a son.
First, let us look at the result of the cross between the two:
[tex]X^BY[/tex] x [tex]X^bX^b[/tex]
male progeny: [tex]X^bY, X^bY[/tex]
female progeny: [tex]X^BX^b, X^BX^b[/tex]
The two sons resulting from the cross inherited male pattern baldness. Hence, the percentage chance that the son will inherit male pattern baldness is 100.
what describes the similar functions of capsids and nuclear membranes
Answer:
Both protect genetic information for the structures.
Explanation:
The capsid is defined as the polyhedral structure which is made up of a different protein shell which is known as capsomers, and that helps to surround the viral genome (DNA or RNA). The important function of the capsid is, it protects the nucleic acid by the digestion of enzymes.
Every nucleus is surrounded by a nuclear membrane. The nuclear membrane also protects the genetic material (DNA) from the substances which are present in the cytoplasm of the cell and keeps DNA inside the nucleus.
Answer: C both protect genetic information for the structures.
Explanation:
Explain why the populations of a predator and its prey often follow regular cycles.
Answer:
Explain why the populations of a predator and its prey often follow regular cycles. If predators kill many prey organisms, the size of the prey population decreases. ... As the number of predators decreases, the number of prey increases, and the cycle repeats.
Explanation:
If predators kill many prey organisms, the size of the prey population decreases. As the number of predators decreases, the number of prey increases, and the cycle repeats.
Viruses are sometimes triggered into an active state by overexposure to sun, sickness or stress
Answer:
True
Explanation:
True because bacteria multiplies in the heat more rapidly
Final answer:
Viruses can remain dormant or become activated by stress, leading to a range of diseases, including cancer. They are treated with antiviral drugs and vaccines but can sometimes resist treatment by mutating or evading the immune system.
Explanation:
Viruses are known to cause a wide range of effects in host organisms, and certain environmental factors like overexposure to sun, sickness, or stress can trigger them into an active state. This active state can lead to abnormal growth of the cell or cell death, and sometimes, viruses lay dormant for extended periods without causing noticeable symptoms. When activated, some viruses are associated with serious diseases, ranging from the common cold to more serious ailments like meningitis and cancer. In the latter, viruses such as oncoviruses contribute to cancer by inactivating tumor suppressor proteins, leading to uncontrollable cell growth. Treatment for viral diseases includes antiviral drugs and vaccines, although some viruses can evade immune responses or develop drug resistance.
Which chemical can be toxic to the cells if it is not removed?
O oxygen
O glucose
O water
O carbon dioxide
Answer:
Carbon Dioxide
Explanation:
Your body's organs, such as your heart and brain, need oxygen-rich blood to work well. Respiratory failure also can occur if your lungs can't properly remove carbon dioxide from your blood. Too much carbon dioxide in your blood can harm your body's organs.
What is a nucleotide?
Answer:
A nucleotide is a compound consisting of a nucleoside linked to a phosphate group. Nucleotides form the basic structural unit of nucleic acids such as DNA.
Explanation:
Answer:
Definition of nucleotide. : any of several compounds that consist of a ribose or deoxyribose sugar joined to a purine or pyrimidine base and to a phosphate group and that are the basic structural units of nucleic acids (such as RNA and DNA) — compare nucleoside.
Explanation:
What ultimately causes organ failure?
a.Immunity Compromise
b.Coronavirus
Which of the following would cause only a chemical change with a sugar cube
Answer:
Which would cause only a chemical change in a sugar cube is heating the sugar cube with acid.
Explanation:
The complete question is:
Jolene wants to experiment with sugar cubes. Which of the following would cause only a chemical change with a sugar cube
Burning the sugar cube with a matchstick .Crushing the sugar cube and dissolving it in water .Heating the sugar cube with acid.The addition of acid to sugar (sucrose) is a known reaction that produces the chemical change of this carbohydrate into carbon, by a process of dehydration.
In the reaction of dehydration of sucrose with sulphuric acid - which is exothermic - the acid extracts water from the sugar molecule, producing gases, such as CO₂ and SO₂, which consumes the acid and converts the sucrose into carbon. The chemical reaction is:
C₁₂H₂₂O₁₁ + H₂SO₄ + 1/2 O₂ ----------→ 11C + CO₂ + 12H₂O + SO₂
Sucrose + Sulfuric Ac. + Oxygen → Carbon + Carbon dioxide + water + sulfur dioxide.
This reaction involves only a chemical change of the sucrose, when converted into carbon.
All of the following are examples of biofuels EXCEPT
Biodiesel
Propane
Ethanol
Methanol
Answer:
propane
it's propane because biodiesel is a form of diesel fuel, ethanol is a chemical compound and methanol is the simplest alcohol.
Answer:
Propane
Explanation:
If the Earth didn't rotate, winds would travel in a straight line. But since the Earth does rotate, the
deflects these winds to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
A.law of gravity
B.Coriolis effect
C.ionosphere
D.polor air masses
[ C. Coriolis Effect ]
If the Earth didn't rotate, winds would travel north or south because of the differences in pressure and temperature. The Earth does rotate, so, the Coriolis Effect diverts the wind to the left of the Southern Hemisphere and right of the Northern Hemisphere. The Coriolis Effect is very important because it creates cyclonic weather system.s
Best of Luck!
Answer:
Coriolis effect
Explanation:
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Please help!
Use the drop-down menus to select the correct reactant or product.
__________ enters the stomata.
__________ exits the stomata.
___________ is absorbed by the roots.
Answer:
1 Carbon dioxide (CO2) enters
2 Oxygen exits
3 water H2O is absorbed
Answer:
1. carbon dioxide
2. oxygen
3. water
How are similarities and differences in characteristics of organisms important in the application of taxonomy
Explanation:
Taxonomy is a field of plant systematics which is associated with the identification, arrangement and classification of the organism.
The classification of the organism is based on the morphological characteristics of the organism. These morphological characteristics of the organism are compared with the characteristics of the other organisms. The organism is classified based on similarities and differences.
Thus, the similarities and differences play an important role in the taxonomy.
Similarities and differences in characteristics of organisms are important in the application of taxonomy - as it helps in classifying and recognizing differences in organisms based on their taxonomic ranks.
Taxonomymoving further down the list, organisms become more closely related and similarThe order of taxonomy is (from most to least broad): Kingdom, Phylum, Class, Order, Family, Genus, Species.Many organisms can be classified under Kingdom, but only a few organisms remain as you file into a Species. this is due to becoming more inclusive and similar moving kingdom to speciesit helps in identifying and recognizing similarities and differences.Learn more:
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The diagram represents part of Mendel's pea plant experiment. He crossed white-flowered pea plants with purple-flowered pea plants. Flower color has the same type of heredity as pea color.
What was most likely the result of the experiment?
one plant with white flowers and three with purple flowers
one plant with purple flowers and three with white flowers
four plants with white flowers
four plants with purple flowers
Answer:d
Explanation:
So how do we get chickens with white and black spots? Shouldn’t they be only white or black?
Answer:
Codominance
Explanation:
This is an example of codominance.
Basically with this type of genetics, both alleles for that trait, in this case feather color, are dominant. This means that both will appear in the phenotype, instead of a dominant phenotype overshadowing a recessive phenotype.
Here, the two dominant alleles are the one that governs white pigment and the one that governs black pigment. Since codominance is occurring, we see a speckled chicken instead of just an entirely white one or an entirely black one.
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The illustration above depicts different embryological stages of 4 different vertebrates. Choose all the true statements concerning embryological development of these four species.
The embryos look similar, regardless of the organism
All vertebrates evolved from the tortoise
The similarity in the embryos suggest that they share a common ancestor
Of the four organisms, the calf and the human are most closely related
Of the four organisms, the tortoise and the human are most closely related
Answer:
The correct answers are-
1. The embryos look similar, regardless of the organism
2.The similarity in the embryos suggest that they share a common ancestor
3.Of the four organisms, the calf and the human are most closely related
Explanation:
The other ones can not be correct because not all vertebrates have evolved from tortoises, there are many vertebrates that have evolved from different species or organisms. And the tortoise and human are not the most closely related because they have completely different features from each other.
The illustration above depicts different embryological stages of 4 different vertebrates all the true statements concerning embryological development of these four species are :
A) The embryos look similar, regardless of the organism
C) The similarity in the embryos suggest that they share a common ancestor
D) Of the four organisms, the calf and the human are most closely related
The illustration above depicts different embryological stages of 4 different vertebrates all the true statements concerning embryological development of these four species are the embryos look similar, regardless of the organism, the similarity in the embryos suggest that they share a common ancestor and of the four organisms, the calf and the human are most closely related.The different ones can't be accurate due to the fact now no longer all vertebrates have advanced from tortoises, there are numerous vertebrates which have advanced from extraordinary species or organisms.Thus, the correct answer is A,C and D.
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How could you investigate the idea that DNA is found only in living or once-living things?
Answer:
Yes, DNA is present in all living and once living cells. Scientists can use DNA from mummies or seeds that are thousands of years old and identify the genetics of those plants and animals using their DNA.
Explanation: I don't think this is right but I have to believe in myself so this is right I know that it is right
Which of the structures shown below is NOT homologous with the others?
Answer:
i think is c
Explanation:
it has less bones then the others
Cardiac muscle causes movement in the
A) bone
B) tendon
C) ligament
D) organ
Answer: d organ
Explanation: for shoure [not a good spell'er]
(1) During the Spanish-American War, U.S. soldiers were supplied with tin cans containing decayed meat. (2) Due to a lack of food safety standards, vendors in the 1800s often sold food that would not today be considered fit for people to eat. (3) Store-bought butter was often stale and mixed with gelatin, fat, and even mashed potatoes. (4) To improve the color of milk from diseased cattle, dairymen sometimes added molasses, chalk, or plaster of Paris. Which sentence is the point of the argument?
Answer:
It will be 2.
Explanation:
It is the start and introduction to the Arguement.
The point of the argument is the lack of food safety standards in the past, as highlighted by sentence (2) which directly mentions the sale of unfit food. It underscores issues from the Spanish-American War to the broader historical context of food processing.
The point of the argument in the given sentences is that food safety standards in the past were inadequate, leading to the consumption of contaminated and adulterated foods. Sentence (2) articulates this point directly by stating that vendors sold food not considered fit to eat by today's standards. Historical context shows that during times of war and industrialization, there was often a compromise on the quality of food, which was processed in unsanitary conditions or adulterated to make it seem more appealing. Troops during the Spanish-American War faced similar issues with contaminated supplies, which sometimes had dire health consequences. At the same time, the mass production of food using industrial methods and the necessities of war sometimes led to improved access to various foodstuffs, even if the quality was compromised.
Hence, the correct answer is (2) Due to a lack of food safety standards, vendors in the 1800s often sold food that would not today be considered fit for people to eat.
Please answer both questions
Which substance is comprised of more than one element?
aluminum
helium
silver
steel
Answer:
steel
Explanation:
use a periodic table
Steel. It's a metal made of mainly iron and carbon, as well as other metalloid elements.