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Long hair in Irish Setters is dominant
(L) to short hair (I). A male homozygous
for long hair is crosses with a female
heterozygous for long hair
1.What genotypes and in what proportion could this cross produce ?
2.what phenotypes and in what proportions could this cross produce
Answers
The possible genotypes of the offspring are: LL and Ll, in a 1:1 ratio.
The phenotype is determined by the genotype, so the possible phenotypes of the offspring are:
Long hair (LL and Ll genotypes) - 100% or 1:1 ratio
No short hair (II genotype) will be produced because the short hair allele is recessive and not present in either parent.
Related Questions
damage to cilia and irritation of the respiratory tract lining by components of smoke increase susceptibility to infectious diseases. group of answer choices true false
Answers
True. Damage to cilia and irritation of the respiratory tract lining by components of smoke can increase susceptibility to infectious diseases.
Cilia are small, hair-like structures that line the respiratory tract and help to remove particles and germs from the air. When these cilia are damaged, it can reduce their ability to filter out germs, leading to a greater risk of infection. Similarly, irritation of the respiratory tract lining caused by smoke can increase inflammation and reduce the ability of the lining to prevent the entry of germs.
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substage of interphase immediately after a cell divides called____
Answers
Answer:
Cytokinesis.
Explanation:
Substage of interphase immediately after a cell divides. Gap 1. Substage of interphase in which the cell copies its DNA in preparation for cell division. Synthesis.
a thick rigid barrier found outside of the cell membrane in plant cells
Answers
Cell-Wall is a thick rigid barrier found outside of the cell membrane in plant cells. A cell wall is a thick, stiff layer that surrounds the cell and is located outside the cell membrane.
In addition to cellulose and protein, the cell wall also contains additional polysaccharides. The cell wall offers structural defense and support. Certain cell types have a stiff, partially permeable protective coating called a cell wall. In the majority of plant cells, as well as those of fungi, bacteria, algae, and certain archaea, this outer layer is situated close to the cell membrane (plasma membrane).
Nevertheless, animal cells lack a cell wall. A plant cell's cell wall is its outermost layer. It protects the cell while stiffening it. Cell walls are absent from animal cells. Every cell has a membrane around it as a form of defense.
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Correct Question:
_____ is a thick rigid barrier found outside of the cell membrane in plant cells.
why has morphology or structural similarity been used the most in classification
Answers
Morphology or structural similarity has been used extensively in classification because it provides a straightforward and effective means of categorizing objects based on their physical characteristics.
Morphological features are easily observable and measurable, making them ideal for automated classification systems that rely on quantitative data. In addition, morphology is often closely related to an object's function or behavior, providing insight into its ecological niche, evolutionary history, or other important aspects of its biology.
This information can be particularly valuable in fields such as ecology, where identifying and categorizing species based on their morphology can help researchers understand patterns of biodiversity, habitat use, and ecosystem function.
Finally, morphology has been studied for centuries and has a well-established body of research and terminology, making it a convenient and standardized way to communicate information about the characteristics of organisms. For all these reasons, morphology continues to be a powerful tool in classification and taxonomy, even as other approaches such as molecular biology become more widely used.
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The disaccharide composed of glucose and galactose joined by a glycosidic bond is called
Answers
Lactose. A molecule of galactose is combined with a molecule of glucose to form lactose via a 1,4-glycosidic bond. Glucose and galactose combine to form the disaccharide known as lactose.
Two monosaccharide units are joined by glycosidic linkages in either the or orientation to form disaccharides. Lactose, maltose, and sucrose are the three most significant disaccharides. A molecule of glucose and a molecule of fructose are joined to form the compound known as sucrose. Galactose and glucose combine to produce a -14 glycosidic bond, which results in the disaccharide lactose. The formal name of the compound is -D-galactopyranosyl-(1-4)-D-glucose. D-galactose and D-glucose combine to generate 19 distinct disaccharides.
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Classify the items with the appropriate cell type. Squamous alveolar cells Engulf microorganisms Dust cells Septal cells Involved in the diffusion of gases Secrete surfactant Alveolar Type 1 Cells Alveolar Type Il Cells Alveolar Macrophages
Answers
Classification of the items with the appropriate cell type: Squamous alveolar cells: Squamous alveolar cells are thin, flat cells that line the alveoli of the lungs.
They enable gases, such as oxygen and carbon dioxide, to diffuse between the air in the alveoli and the blood in nearby capillaries. Engulf microorganisms: Alveolar macrophages engulf and destroy microorganisms and other foreign materials that are inhaled into the lungs.Dust cells: Dust cells are alveolar macrophages found in the lungs. They ingest and remove dust and debris from the respiratory tract. Sepal cells: Septal cells are the cells that form the septal wall of the alveolus, which is the thin wall between adjacent alveoli. They provide support for the alveoli and help maintain their shape. Involved in the diffusion of gases: Alveolar Type I cells are involved in the diffusion of gases. They are flat and thin-walled, allowing gases to diffuse rapidly between the air in the alveoli and the blood in nearby capillaries. Secret surfactant: Alveolar Type II cells secrete surfactant, a fluid that covers the surface of the alveoli and prevents them from collapsing. Alveolar Type I Cells: Alveolar Type I cells are flat and thin-walled, allowing gases to diffuse rapidly between the air in the alveoli and the blood in nearby capillaries. Alveolar Type Il Cells: Alveolar Type II cells secrete surfactant, a fluid that covers the surface of the alveoli and prevents them from collapsing. Alveolar Macrophages: Alveolar macrophages engulf and destroy microorganisms and other foreign materials that are inhaled into the lungs.
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what habitat do parrots live in
Answers
Answer:rainforests, grasslands, savannas, islands
Explanation:
2.1)The early 1900s was pivotal for the science of genetics because of which of the following events?
a)the rediscovery of Gregor Medel's scientific discoveries
b)Thomas Hunt Morgan's identification of the first fruit-fly mutant
c)Walter Sutton's proposal that chromosomes contain genes
d)All of the above
e)The early 1900s was pivotal for the science of genetics because of which of the following events?
2.2) Which of the following characteristics are shared by both bacterial and eukaryotic chromosomes?
a)Centromeres
b)Organized around histones
c)Origin of replication
d)Telomeres
e)all of the above
2.3)Which of the following is not part of the eukaryotic cell cycle?
a)G1
b)G2
c)S0
d)S
e)M
Answers
2.1) The early 1900s was pivotal for the science of genetics because of all of the above. Therefore, the correct option is d.
2.2) The characteristics that are shared by both bacterial and eukaryotic chromosomes are all of the above. Therefore, the correct option is e.
2.3) The part of the eukaryotic cell cycle which is not present is S0. Therefore, the correct option is c.
The early 1900s was a crucial period for genetics science due to the rediscovery of Gregor Medel's scientific discoveries, Thomas Hunt Morgan's identification of the first fruit-fly mutant, and Walter Sutton's proposal that chromosomes contain genes. Thus, the correct option is (d) All of the above.
2.2) The characteristics shared by bacterial and eukaryotic chromosomes are as follows: Centromeres, Organized around histones, Origin of replication, and Telomeres. Thus, the correct option is (e) all of the above.
2.3) The eukaryotic cell cycle is a cycle of growth and division that takes place in the eukaryotic cell. It involves four stages in the order of G1, S, G2, and M, where G stands for gap, S stands for synthesis, and M stands for mitosis. S0 is not a part of the eukaryotic cell cycle. Hence, the correct option is (c) S0.
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You are given a piece of paper how can you cause a chemical change
Answers
Answer:
There are a multitude of different ways a person can take a piece of paper and cause a chemical change. However, the best example I can give you is to burn the paper.
Which of the following series is organized according to the levels of organization used by ecologists? (In other words, which list is in the correct order, as one level progresses to the next?)a. population - community - ecosystemb. community - ecosystem - populationc. population - ecosystem - communityd. community - population - ecosystem
Answers
The correct order of levels of organization used by ecologists is: a. population - community - ecosystem. Population refers to a group of individuals of the same species living in the same area, community refers to a group of interacting populations of different species living in the same area, and an ecosystem is the combination of communities of different species, along with their physical environment.
The series organized according to the levels of organization used by ecologists is “population - community - ecosystem”. In the study of ecology, organization is a key concept. The ecosystems are hierarchically organized. The different levels of organization in ecology are organisms, population, community, ecosystem, biome, and biosphere. A population is a group of individuals of the same species that inhabit the same place and time. Communities include multiple populations of different species. An ecosystem is a community of living organisms and their physical environment. The biome includes similar ecosystems in terms of climate, vegetation, fauna, and soil type. The biosphere is the entire planet where all living organisms exist.The correct order of the series in terms of levels of organization used by ecologists is population, community, ecosystem. . Option B (community - ecosystem - population), option C (population - ecosystem - community), and option D (community - population - ecosystem) are all incorrect in terms of levels of organization used by ecologists, as their orders are incorrect. Therefore, the correct answer is option A.
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and during which stage of postmortem decomposition do body tissues break down and begin to liquefy?
Answers
The process of postmortem decomposition involves the breakdown of body tissues and their transformation into simpler compounds. This process can be divided into five stages. The stages of postmortem decomposition are:
Autolysis This stage begins immediately after death and lasts for about 1-2 days. It is characterized by the onset of autolysis, or self-digestion, as enzymes released from cells in the body begin to break down surrounding tissue. This process causes the release of gas, which leads to bloating and discolouration of the body.Putrefaction During this stage, which begins approximately 2-3 days after death and can last for up to a week, the body undergoes the process of putrefaction. This stage is characterized by the breakdown of tissues into simpler compounds, such as amino acids and fatty acids. The body also begins to produce a strong odor as bacteria and other microorganisms feed on the decomposing tissue.Black putrefaction This stage typically begins around a week after death and can last for up to three weeks. During this stage, the body turns black and has a strong odor due to the production of hydrogen sulfide gas.Butyric fermentation During this stage, which can begin around three weeks after death and last for several months, the body undergoes butyric fermentation. This process produces a sweet, rancid smell and is characterized by the breakdown of fats into fatty acids.Dry decay The final stage of postmortem decomposition is dry decay, which begins several months after death and can last for several years. During this stage, the body is largely reduced to dry, powdery remains as a result of mummification or natural desiccation.The stage of postmortem decomposition during which body tissues break down and begin to liquefy is known as putrefaction. During this stage, which typically begins 2-3 days after death and can last for up to a week, the body undergoes the process of putrefaction. This stage is characterized by the breakdown of tissues into simpler compounds, such as amino acids and fatty acids, and the production of a strong odor as bacteria and other microorganisms feed on the decomposing tissue.
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5. Which is a limitation of using models in
science? sc.7.N.3.2
A delaying the outcome of an experiment
B hindering experimenters from testing
their hypotheses
Obasing models on an incomplete or
inaccurate observation
45
Dinhibiting the ability of scientists to
communicate with one another
Answers
Out of the given four options, option C: basing models on an incomplete or inaccurate observation is a limitation of using models in science is the correct one.
Why is basing models on an incomplete or inaccurate observation a limitation?Scientific models are representations of complex systems or phenomena that allow scientists to make predictions and test hypotheses. However, models are based on observations and data, which may be incomplete or inaccurate. This can lead to inaccurate predictions and faulty conclusions, which can hinder scientific progress.
While delaying the outcome of an experiment or hindering experimenters from testing their hypotheses can be limitations of using models, they are not inherent limitations of using models. In fact, models can often speed up the process of scientific discovery by allowing scientists to make predictions without conducting time-consuming experiments. Similarly, models can facilitate communication among scientists by providing a common language and framework for discussing complex systems or phenomena.
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what is link between high intensity exercise and brain function?
Answers
The link between high-intensity exercise and brain function is that it can enhance cognitive function and protect the brain against aging and disease.
High-intensity exercise is a type of physical activity that requires maximal effort for a brief period. This type of exercise is characterized by short bursts of intense activity followed by periods of rest or lower intensity activity. It is commonly used in fitness programs such as HIIT (High-Intensity Interval Training).
Overall, high-intensity exercise is beneficial for brain function. It can enhance cognitive function, increase neuroplasticity, protect the brain against aging and disease, reduce the risk of depression, and improve sleep quality.
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the are the simplest and most primitive eumycota, or true fungi. the evolutionary record shows that the first recognizable appeared during the late pre-cambrian period, more than 500 million years ago. like all fungi, have chitin in their cell walls, but one group of has both cellulose and chitin in the cell wall. most are unicellular; a few form multicellular organisms and hyphae, which have no septa between cells (coenocytic). they produce gametes and diploid zoospores that swim with the help of a single flagellum.
Answers
The Chytridiomycetes are the simplest and most primitive Eumycota, or true fungi. The evolutionary record shows that the first, recognizable chytridiomycetes appeared during the late pre-Cambrian period, more than 500 million years ago. Like all fungi, chytridiomycetes have chitin in their cell walls, but one group of chytridiomycetes has both cellulose and chitin in the cell wall.
Fungi are a group of organisms that are neither plants nor animals. Most fungi are terrestrial, but they can also be aquatic. Fungi are eukaryotic, multicellular, or unicellular organisms. They are heterotrophs that feed on organic matter. Fungi play a crucial role in breaking down dead organic matter and making nutrients available to other organisms. They can also form mutualistic associations with other organisms, such as plants and algae.
Chytridiomycetes are a class of fungi that have chitin in their cell walls. Chytrids, as they are commonly known, are the simplest and most primitive fungi. They are mostly aquatic, but some are terrestrial. Chytrids are unique among fungi in that they have motile cells, called zoospores, that have a single flagellum. Most chytrids are unicellular, but some form multicellular structures, such as hyphae, which have no septa between cells. Chytrids reproduce both sexually and asexually.
Note: The question is incomplete. The complete question probably is: The _____ are the simplest and most primitive Eumycota, or true fungi. The evolutionary record shows that the first, recognizable _____ appeared during the late pre-Cambrian period, more than 500 million years ago. Like all fungi, _____ have chitin in their cell walls, but one group of ____ has both cellulose and chitin in the cell wall. Most are unicellular; a few form multicellular organisms and hyphae, which have no septa between cells (coenocytic). They reproduce both sexually and asexually; the asexual spores are called diploid zoospores. Their gametes are the only fungal cells known to have a flagellum.
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during bypass surgery that is used as a treatment for severe obesity, surgeons seal off or remove part of the stomach. the remaining stomach then produces:
Answers
During bypass surgery that is used as a treatment for severe obesity, surgeons seal off or remove part of the stomach. The remaining stomach then produces gastric juices and enzymes.
The remaining stomach produces gastric juices and enzymes after bypass surgery that is used as a treatment for severe obesity. When part of the stomach is sealed off or removed, the digestive system is altered, resulting in a reduced appetite and increased feelings of fullness. It aids in the reduction of food intake, which contributes to weight loss.
Obesity is a condition that affects millions of people worldwide. People who are obese are more likely to develop severe health issues such as cardiovascular disease, diabetes, and hypertension, among others. The risk of death from these health issues is much higher among people who are overweight or obese than among people who are of normal weight.
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DNA is a polymer of nucleotides, which is composed of a ribose, phosphate, and nucleic acid. Which of the following characteristics of the ribose is required for termination of a DNA strand in DNA sequencing?
Select one:
a. 2'-H
b. 3'-OH (hydroxyl)
c. 3'-H
d. 1'-Guanine
e. 5'-H
Answers
DNA is a polymer of nucleotides, which is composed of a ribose, phosphate, and nucleic acid. The 3'-OH (hydroxyl) characteristic of the ribose is required for termination of a DNA strand in DNA sequencing.
What is DNA? Deoxyribonucleic acid or DNA is a genetic material present in all living things. DNA contains the instructions that are required to develop and sustain life. DNA contains nucleotides, which are the building blocks of DNA. A nucleotide consists of a deoxyribose sugar molecule, a phosphate molecule, and a nucleic acid molecule. The nitrogenous bases are the nucleic acid molecules that differ between the nucleotides.
A nucleotide is a phosphate molecule that is linked to the 3′ hydroxyl (OH) group of the deoxyribose sugar of one nucleotide and the 5′ hydroxyl (OH) group of the deoxyribose sugar of the next nucleotide. Because DNA is constructed of nucleotides that are linked through their phosphate and hydroxyl groups, sequencing of DNA involves breaking the chain and identifying each of the components to determine the order of the nucleotides that make up the sequence of DNA. Sequencing of DNA is a vital tool for the study of genetics, including the determination of the DNA sequence of an entire genome of an organism. Therefore, the 3'-OH (hydroxyl) characteristic of the ribose is required for termination of a DNA strand in DNA sequencing.
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the structure of the dna determines which amino acids are put together to form a specific protein which is used to carry out out the essential functions of life.
Answers
The statement in question "the structure of the DNA determines which amino acids are put together to form a specific protein which is used to carry out the essential functions of life" is true. So the answer to that statement is true.
DNA (Deoxyribonucleic acid) is the biological molecule that carries genetic information. In living organisms, DNA is the genetic material that is passed down from one generation to the next. DNA has a unique structure that allows it to store and transmit genetic information in a specific order. DNA contains the genetic code that determines the sequence of amino acids in a protein. Each amino acid is coded for by a specific sequence of three nucleotides in DNA called a codon, the sequence of codons in DNA determines the sequence of amino acids in a protein.
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Write a scientific explanation that explains why factors that are harmful to other plant species are beneficial for the Venus flytrap
Answers
The Venus flytrap is an insectivorous plant native to the Southeastern United States. It is well-known for its carnivorous behavior, capturing and digesting insects to supplement its nutrient intake.
The Venus flytrap is adapted to grow in nutrient-poor environments and, as a result, has developed unique characteristics to survive. In this scientific explanation, we will explore how factors that are harmful to other plant species are beneficial for the Venus flytrap.
The Venus flytrap has evolved to thrive in environments that are low in nitrogen and other essential nutrients. As a result, the plant has developed unique mechanisms to obtain the nutrients it needs. One of the ways the Venus flytrap obtains nitrogen is by capturing and digesting insects. The plant uses specialized leaves that have evolved to form a trap. When an insect lands on the leaves, the plant detects movement and snaps the trap shut, trapping the insect inside. The plant then secretes digestive enzymes that break down the insect's tissues and release the nitrogen and other essential nutrients that the plant needs.
Factors that are harmful to other plant species, such as nitrogen-deficient soil, are actually beneficial for the Venus flytrap. This is because the plant has evolved to obtain nutrients in a unique way, using its carnivorous behavior to supplement its nutrient intake. In environments that are low in nitrogen, the Venus flytrap has a competitive advantage over other plant species because it has a unique way of obtaining the nutrients it needs. As a result, the Venus flytrap is able to survive and thrive in environments that would be inhospitable to other plant species.
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why does the number of mitochondria found in unicellular organisms capable of propelled will differ from the number of fluid in a non-moving unicellular organism?
Answers
Mitochondria are organelles found in eukaryotic cells that are responsible for producing energy in the form of ATP through a process called cellular respiration. The number of mitochondria found in a cell can vary depending on the energy demands of the cell and its activities.
In unicellular organisms that are capable of movement, such as protozoa, they require more energy for locomotion than non-moving unicellular organisms. Therefore, they are likely to have a higher number of mitochondria to meet their energy demands. The increased number of mitochondria allows for more ATP production, which can be used to power the cell's movement.
In contrast, non-moving unicellular organisms may require less energy, as they do not need to move around. Therefore, they may have a lower number of mitochondria compared to moving unicellular organisms. However, the number of mitochondria in non-moving unicellular organisms may still vary depending on their specific metabolic needs and the activities they perform.
Overall, the number of mitochondria found in a unicellular organism is likely to be influenced by the energy demands of the cell and its activities.
There are many different breeds of horses. Each breed was developed because of specific traits needed or desired by the breeder. One type of horse is a very large, heavy animal called a Clydesdale. What kind of work would such a large, heavy animal be expected to do? A. be easy for small children to ride B. pull or carry a very heavy load C. run a long distance without tiring D. run very fast in races
Answers
A Clydesdale is a draft horse breed that is known for its large size and strength. Due to their size and strength, Clydesdales are typically used for pulling or carrying heavy loads, such as plowing fields, hauling logs, or pulling carts or carriages. So, option B is correct.
A type of draught horse with Scottish roots is the Clydesdale. Large size, power, and unusual feathering on their lower legs are some of their most notable characteristics. Clydesdales have historically been employed for labor-intensive farm work, cargo transportation, and carriage work. Because of their stunning size and appearance, they are widely utilised in parades and exhibitions. For those who enjoy horseback riding or working with horses, Clydesdales are a popular breed since they are frequently kind and amiable creatures.
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Water is a polar molecule that exhibits the properties of adhesion and cohesion. Identify the examples as either cohesion, adhesion, or both. Cohesion Both cohesion and adhesion Adhesion Water forms drops of rain in the air as a result of surface tension. Blood flows up a narrow tube as a nurse Water sticks to the cell walls of plants. collects a blood sample. Water forms into a drop on a leaf and hangs down, but it does not drop.
Answers
Water is a polar molecule that exhibits the properties of adhesion and cohesion. Cohesion, Adhesion, and Both . Cohesion: Water forms into a drop on a leaf and hangs down, but it does not drop. Blood flows up a narrow tube as a nurse collects a blood sample.
Adhesion: Water sticks to the cell walls of plants.
Both cohesion and adhesion: Water forms drops of rain in the air as a result of surface tension .The cohesive forces cause the liquid to hold together and minimize its surface area, producing a spherical droplet shape. Cohesion is the attraction between two or more molecules of the same material.
Adhesion is the attraction between two different materials. Water molecules stick to a plant's cell walls because of the adhesion between them.
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in rabbits, black fur (B) is dominant over brown fur(b). Consider the punnett square.Both of the parents in the Punnett square are:blackbrownhomozygous dominanthomozygous recessive
Answers
In rabbits, black fur (B) is dominant over brown fur (b). The Punnett square is shown below, and both parents are b. homozygous dominant.
A Punnett square is a chart that scientists utilize to predict the likelihood of an offspring inheriting a particular trait. It is a visual representation of Mendelian genetics' fundamental principles. A Punnett square can be used to estimate the chances of an offspring inheriting particular characteristics by organizing the alleles from both parents.
An individual has two copies of the same allele in their DNA sequence, and the alleles are the same. Homozygous dominant alleles are a pair of genes that specify the same characteristics and that are both dominant alleles. As a result, the offspring will inherit black fur in a 100 percent likelihood. The alleles for black fur from both parents are present in the offspring's genome, so the black fur trait will be expressed as a result.
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Ancient Chinese doctors once used a combination of Cannabis and alcohol to anesthetize patients for surgery True False Question 2 (3 points) In the Chinese herbal manuals, it was recorded that people who used Cannabis in conjunction with Ginseng were able to obtain sight of the future. True False Question 3 (3 points) In modern Chinese medicine, Cannabis seeds have little medicinal value. True False Question 4 (3 points) Ancient Shaman practices belleved that the causes of disease were due to otherworldly influences and used mind altering substances in order to deal with these malevolent forces. True False
Answers
True, Ancient Chinese doctors once used a combination of Cannabis and alcohol to anesthetize patients for surgery.
it was also observed that during the second century A.D, the Chinese surgeon, Hua T'o, began to use cannabis as an anesthesia and to treat people.
True, it was true in chinese herbal manuals that ginseng and cannabis combination is known as a clairvoyant mixture.
it was also written by the Taoist priest wrote in the fifth century B.C. that Cannabis in the combination with Ginseng to people to set forward time and reveal future events.
in modern medicine, cannabis do have science values,cannabis has been used in China for fiber, seeds, as a traditional medicine and also used for medicine.
People in ancient times believed that treatments were directed toward eliminating evil spirits herbs and plants In 4000 BC.
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Match each of the following descriptions with the appropriate type of plant. These nonvascular plants can often survive on bare rock. _____
This vascular plant produces swimming sperm. _____
This vascular plant might rely on animals to disperse its seeds _____
This vascular plant produces seeds but lacks flowers and fruits. _____
- True fern - Eudicot - Conifer
Answers
Nonvascular plants can often survive on bare rock. The correct answer is mosses.
These nonvascular plants can often survive on the bare rock because they don't require a lot of water or nutrients from the soil to grow. This is because they don't have vascular tissues to transport water and nutrients from one part of the plant to another.
The vascular plant produces swimming sperm. The correct answer is true fern. True ferns are vascular plants that reproduce through spores. They produce swimming sperm which require water to reach and fertilize the egg.
The vascular plant might rely on animals to disperse its seeds. The correct answer is eudicot. Eudicots are flowering plants that rely on animals such as birds, bees, and butterflies to disperse their seeds.
The vascular plant produces seeds but lacks flowers and fruits. The correct answer is conifer. Conifers are a group of plants that produce seeds but lack flowers and fruits. They are often called gymnosperms because their seeds are not enclosed in a protective fruit like flowering plants.
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All of these are associated with Photosystem II exceptelectron transport chaina reaction centerATPNADPHwater
Answers
Water is associated with Photosystem II (PSII) and not with electron transport chain, a reaction center, ATP, or NADPH. PSII is a protein complex found in the thylakoid membrane of chloroplasts, which is responsible for the initial stages of photosynthesis.
During PSII, light energy is absorbed by pigments such as chlorophyll, which causes the oxidation of water molecules, releasing electrons and protons, and generating oxygen gas as a byproduct. These electrons then pass through a series of redox reactions in the electron transport chain, ultimately leading to the production of ATP and NADPH, which are energy-rich molecules used to power the Calvin cycle and synthesize organic compounds. The reaction center of PSII is responsible for the transfer of these electrons to the electron transport chain.
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after a major event at 120 generations, an allele was lost from the population. in terms of diversity, this left the population with:
Answers
After a major event at 120 generations, an allele was lost from the population. In terms of diversity, this left the population with less genetic diversity.
What is an allele?An allele is a variant form of a gene that appears as a result of mutation. An allele is one of the possible alternative forms of a gene that can be present at a given locus (position) on a chromosome. A gene locus refers to a specific location on a chromosome where a particular gene is found.
What is genetic diversity?Genetic diversity refers to the variety of genes and alleles that exist within a population. When a population has high genetic diversity, it implies that it has a wide range of genetic variability, making it easier for the population to adapt to environmental changes. It can also protect the population from disease or predation, increase its chances of survival and persistence, and give it greater resilience against genetic drift, inbreeding, and other factors that can reduce genetic diversity.
Therefore, losing an allele from a population results in a decrease in genetic diversity, which is a disadvantage for the population.
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2. Compare the environment in which physical weathering is dominant to the
environment in which chemical weathering is dominant.
Answers
Answer:
chemical weathering is more dominant in the regions where there is abundant limestone rock.
Explanation:
hope this helps
what the defintion of Homozygous?
Answers
Homozygous refers to a genetic condition in which an individual has two identical alleles (variants of a gene) at a specific locus (position) on a pair of homologous chromosomes.
In simpler terms, homozygosity refers to the inheritance of two identical copies of a particular gene, one from each parent. The term homozygous can be further divided into two categories, namely homozygous dominant and homozygous recessive.
Homozygous dominant individuals carry two copies of a dominant allele, which expresses its phenotype regardless of whether the second allele is dominant or recessive. Homozygous recessive individuals, on the other hand, carry two copies of a recessive allele, which expresses its phenotype only when both alleles are recessive.
Homozygosity is an important concept in genetics, as it can influence the expression of certain traits and the likelihood of developing genetic disorders. In general, homozygosity for a particular gene can increase the predictability of inherited traits and genetic diseases.
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In the context of conservation biology, what does genetic diversity mean? a. The total number of species in a given region. b. Number and relative frequency of alleles in a population, species, or lineage. c. A quantity summarzing the average genetic difference between two randomly chosen individuals in a population. d. The number and relative frequency of species in a given region.
Answers
In the context of conservation biology, genetic diversity refers to the number and relative frequency of alleles in a population, species, or lineage. So, option B is correct.
The variety in genetic material within and between populations of a species is reflected by genetic diversity, which is a crucial component of biodiversity. Populations with genetic diversity can adapt to shifting environmental conditions, fend off disease, and avoid the detrimental consequences of inbreeding, genetic drift, and other factors that can make populations less fit. For species and ecosystems to survive over the long term, genetic diversity must be preserved.
Option (b) correctly defines genetic diversity as the number and relative frequency of alleles in a population, species, or lineage, while the other options are incorrect.
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n guam, the brown tree snake . view available hint(s)for part a in guam, the brown tree snake . is an invasive species that has caused a dramatic decline in biodiversity is an invasive species that has gone unnoticed since its introduction in world war ii is used to control invasive species that could hurt agricultural crops is a natural predator that is a dominant species in the ecosystem
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In Guam, the brown tree snake is an invasive species that has caused a dramatic decline in biodiversity.
What is an invasive species?An invasive species is an animal or plant that is introduced to an ecosystem and causes damage to the natural environment. They could be brought to new areas as a result of human activities, such as the introduction of foreign species in shipping ballast or the use of non-native species in landscaping.
Brown tree snake in Guam: Brown tree snakes are a non-native species that were first introduced to Guam in the 1940s. It was unintentionally brought to the island as a stowaway on ships from Southeast Asia. Brown tree snakes have been thriving in the island because they do not have any natural predators in Guam, which has led to a decline in biodiversity as well as causing significant environmental and economic damages.
Invasive species like the brown tree snake are known for their destructive tendencies, and they have a significant impact on local ecosystems. They can damage habitats, reduce biodiversity, and cause economic losses.
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