a true-breeding, purple-flowered pea plant is repeatedly mated with a true-breeding, white-flowered pea plant. all of their offspring are purple-flowered. if two of these purple-flowered offspring are mated, what percentage of their offspring will be white-flowered?
25%.
When self-crossed, the offspring would be PP, Pp, Pp, and pp. As all of the purple offspring are heterozygous Pp for the trait and are thus all purple, pp genotype out of these would be white as it is homozygous recessive, hence 1/4 are white or 25%.
Feel free to leave a comment below if you have any further questions. I'd appreciate a nice review if you found my response useful. I'm grateful.
What is heterozygous?
Heterozygous is a term used to describe the genotype, or set of alleles, that an organism possesses. The phenotype develops as a result of the genotype. A heterozygous person has distinct phenotypes depending on the varying connections between alleles. The heterozygous phenotype will be identical to the dominant phenotype in alleles that exhibit total dominance.
In contrast, incomplete dominance results in a heterozygous phenotype that falls in the middle of the dominant and recessive phenotypes. When the various alleles express themselves separately in various bodily regions, the third sort of association called codominance occurs. When a characteristic is codominant, heterozygous people will exhibit the phenotype of one allele in some areas of their bodies and the phenotypic of the other allele in other areas.
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Questions on The excretory system
The function of skin is in perspiration, liver for deamination, kidney for ultrafiltration and Lungs for expiration.
What is excretion and how does it keep the body balanced?Excretion is the process in which all the waste substance either in the form of liquid or solid gets off our body .Skin is an excretory organ which excretes out sweat which is produces as a result of excessive work .Liver , the largest organ of our body is an excretory organ which helps in deamination a process of converting ammonia in toxic form to detoxic form .Kidney the bean shaped organ of our excretory system helps in urine production , selective reabsorption , ultrafiltration etc.Lungs the two pumping organs of our body , when we breathe in air get filled in lungs and we expire the air gets expired out of lungs.To know more about excretory system visit:
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local innate immune responses attempt to control a parasite in the early stages of infection. what happens if these local immune responses fail to control the parasite?
When local immune responses fail to control a parasite in the early stages of infection, antigen and antigen-loaded dendritic cells move to the lymphatics and then to local lymph nodes.
What are parasites?
A parasite is any organism that lives on or in a host organism and gets its food from or at the expense of its host. A parasite cannot live, grow, and multiply without a host, For this reason, a parasite rarely kills its host, but it can spread diseases, some of which may be fatal.
There are three main classes of parasites that can cause disease in humans namely: protozoa, helminths, and ectoparasites.
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Examining 9-10, explain where the cropland produced goes:
The cropland produced comprises it's 10% to permanent crops like cocoa. Another 21% is owed to preparation of irrigation.
Areas used for the cultivation of harvestable crops are referred to as cropland. Cropland is divided into two subcategories: cultivated and non-cultivated. About 10% of cropland is dedicated to permanent crops like cocoa plantations, oil palm plantations, and fruit tree orchards. A further 21% of land is prepared for irrigation, a crucial agricultural land management technique.
Approximately five billion hectares, or 38% of the world's land surface, is used for agriculture. About one-third of this is utilized for farming, and the remaining two-thirds are pastures and meadows for grazing animals.
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What is an age structure?
An age structure is represented by an age pyramid. The three major groups are pre-reproductive, reproductive, and post-reproductive. A triangular-shaped pyramid represents a stable population. A bell-shaped polygon is characterized by equal numbers of young and middle-aged organisms. An urn-shaped age structure indicates a declining population. This structure is characterized by a high percentage of young organisms.
The correct among these are A bell-shaped polygon is characterized by equal numbers of young and middle-aged organisms. An urn-shaped age structure indicates a declining population.
A population pyramid, sometimes referred to as an age structure diagram or an age-sex pyramid, is a visual representation of the distribution of various age groups for each gender in a given geographic area. The pyramid often has a pyramidal shape. Pre-reproductive, reproductive, and post-reproductive are the three main pyramidal categories.
A pyramid with three triangles stands in for a populace that is expanding.An equal number of young and middle-aged organisms make up a bell-shaped polygon.A diminishing population is indicated by an age structure shaped like an urn.To learn more about age structure visit the link:
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Answer: its both "A bell-shaped polygon is characterized by equal numbers of young and middle-aged organisms." and "An urn-shaped age structure indicates a declining population."
Explanation:
Q5.
Figure 1 shows guard cells around open stomata magnified 800 times.
(b) The image size of one of the guard cells is 26 millimetres long.
Calculate the real length of the guard cell in micrometres.
Include the equation you are using to calculate your answer.
The real length of the guard cell in micrometers would be 32.5 micrometers.
1 millimeter = 1000 micrometer.
Magnification problemThe guard cell has been magnified 800 times.
Assuming the real size of the guard cell is x:
800x = 26 millimeter.
Solve for x:
x = 26/800
= 0.0325 millimeter.
Meaning that the real length of the guard cell is 0.0325 millimeters.
Now, let's convert this size to micrometers.
1 millimeter = 1000 micrometer
Thus,
0.0325 millimeter = 1000 x 0.0325
= 32.5 micrometers.
The real length of the guard cell in micrometers is 32.5 micrometers.
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the z-line is: group of answer choices a protein disk that bisects and anchors the i-band. the area between filaments. a bundle of myofilaments. extensions of the sarcolemma.
Z line also called Z disc. It is a dense protein material that divides one sarcomere from another. It passes through the center of I band and bisect the I band A protein disk that bisects and anchor the I band.
A muscle sarcomere's limits are indicated by the Z disc (or Z line). A single sarcomere is delineated by two nearby Z discs along the myofibril. The attachment points for the thin filaments are the Z discs. Thus, two nearby sarcomeres are reached by thin filaments that stretch from each Z disc. The Z discs of a sarcomere close together when a muscle fibre contracts. One considers mature Z-discs to be one of the most complex macromolecular structures in biology since they are likely made up of hundreds of distinct proteins. Z-discs, which are challenging to see in standard light microscopy, show up as electron dense bands in the longitudinal view of electron microscopy that range in size from 30 to 50 nm in rapid muscle to between 100 and 200 nm in slow muscle.
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Orchids are flowering plants that grow on other plants,
including trees. However, orchids do not harm the trees. By
growing on them, orchids can reach more sunlight.
What kind of relationship do orchids and trees have?
A. Competition
B. Parasitism
C. Commensalism
D. Mutualism
Answer:
Commensalism
Explanation:
hope this will be helpful
How does the concentration of acid rain affect the growth of radish seeds (the length of the radicle in centimetres)?
Acid rain and a lower pH can typically alter a radish's germination and growth.
High pH negatively affected the germination rate of seeds from most species, but had no effect on the per cent germination of any of the species. In an experiment when radish is grown at 7 pH grew thick and sturdy. studies shows that radishes watered with a low pH level do not grow to be tall and radishes watered with an exact acid level to neutral grow to be tall.
increased acidic level (pH 2.0) of the rain water affects the seed germination by the rate of 40% as compared to that of lower level of acidity.
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which statement about agroecosystems is true? agroecosystems have low species and habitat diversity. agriculture does not change the natural environment. agroecosystems are similar to natural ecosystems. monoculture decreases the use of chemicals.
The correct answer is option A .
The artificial ecosystem known as an agroecosystem is made up of agricultural land. It is different from natural ecosystem because agroecosystem could not sustain freely.
What is agroecosystem ?The ecosystems that support our farms' and gardens' food production systems are known as agroecosystems. The human activity of agriculture, as the name suggests, forms the basis of an agroecosystem.
Why we should build agroecosystem ?In the face of climate shocks and stressors, agroecology aids in the preservation, improvement, and protection of agriculture and food systems. Diverse, cohesive agroecological systems can boost carbon sequestration, improve livelihood resilience, and offer solutions for climate change adaptation and mitigation.
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The majority of dissolved tons in seawater is , roughly a 0.5M NaCl concentrationThe lonization constant of is 2.0. Calculate the solute potential for seawater if you know that the water is 2C
The solute potential for seawater is -2.6 kPa.
What does solute potential mean?When a solute is dissolved in water, it is less likely to osmotically diffuse away than when it is not. A solution's water potential will be lower and more negative than that of pure water.
Additionally, as there are more solute molecules present, the solute potential becomes more negative. Many different living species are significantly impacted by osmotic potential. If a live cell is surrounded by a more concentrated solution, it will likely lose water as a result of the environment's higher water potential. Both marine creatures that live in sea water and halophytic plants that grow in salty conditions can demonstrate this.
The solute potential for seawater is -2.96 kPa.
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the rate of synthesis for a particular protein increases. what is the most likely cellular manifestation? please choose the correct answer from the following choices, and then select the submit answer button. answer choices an increase in the fidelity function more polysomes fewer polysomes more free ribosomes decreased ribozyme activity
The rate of synthesis for a particular protein increases therefore the most likely cellular manifestation is more polysomes and is therefore denoted as option B.
What is a Polysome?This is also known as a polyribosome and it consists of a group of ribosomes which are bound to an mRNA molecule in the form of beads in a cell.
We are aware that ribosome is the organelle which is responsible form protein synthesis in cells of living organisms due to its important functions such as growth etc.
This therefore means that an increase in the rate of a particular protein means that there are more ribosomes in the form of polysomes which is therefore the reason why option B was chosen as the most appropriate choice.
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The options are:
None of the above.More polysomesAn increase in the fidelity function.Decreased ribozyme activity.More free ribosomes.What is the main source of energy for living things
The main source of energy for living things is The Sun.
The sun is the primary source of energy for organisms and the ecosystems to which they belong. Producers such as plants algae, and cyanobacteria use the energy of sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through nearly all food webs.
One of the most important energy sources is the sun. The sun's energy is the original source of most of the energy found on Earth. We collect solar thermal energy from the sun. Sunlight can also be used to generate electricity from solar cells' photovoltaics. His three main energy categories for power generation are fossil fuels coal natural gas oil nuclear energy, and renewable energy sources.
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Which three statements about dialysis are true
please add options little bro
Answer:
It’s a time-consuming procedure.
It uses a machine to purify blood.
It’s a temporary remedy for renal failure.
Explanation:
If you are sick from a bacterial infection what do you use to treat that infection ?
Answer:
Antibiotics usually cure bacterial infections. They sometimes go away on their own or can be treated without antibiotics, but it's always best to check with a healthcare provider for the best way to treat them.
Explanation:
If these examples are density independent or dependent limiting factor
In ecology, density is a measure that refers to how many individuals a population has in a specific habitat.
Considering this, we can say that water is a density-dependent limiting factor, since this is a limited resource that can vary its availability annually, but also is a species have too many individuals, all of them will not have the same capacity to reach this resource, especially when we talk about large animals or plants.
Diseases caused by bacteria would be also a density-dependent limiting factor, since only when too many microorganisms of a pathogenic species replicate in our bodies, do we begin to feel the symptoms of that illness.
Predators are also a density-dependent limiting factor since the species which they feed on can be overhunted by them, being reduced in number of individuals, or being not too much hunted and increase their individuals.
Earthquakes are a density-independent limiting factor, since they do not depend on other factors to occur, but only on the movement of our planet's plates.
Finally, limits population regardless of how many organisms are present in the area is a density-independent limiting factor, since they do not depend on how many organisms they're to limit the increase of the population. Being this option an abiotic kind of non-limiting factor.
Number the steps for balancing equations:
Use coefficients to increase the atoms on each side.
Check to make sure you have the same number of each type of atom on each side.
Count the atoms on each side.
Identify the atoms on each side
answer:
Identify the atoms on each side
count the atoms on each side
use coefficients to increase the atoms on each side
check to make sure you have the same number of each type of atom on each side
Answer:
The guy abo me is right, he wrote them in the order they are supposed to be.
PLEASE ITS URGENT I WILL GIVE BRAINLIEST
A ______ is a group into which organisms are classified
a. class
b. archaea
c. phylum
d. taxon
Answer:
taxon
i hope that this helps
Used to mix combinations of materials and to assist in the pouring of liquids.
Stirring rod is used to mix combinations of materials and to assist in the poring of liquids.
A glass stirring rod, sometimes called a glass rod, stirring rod, or stir rod, is a piece of equipment used in laboratories to mix substances. They typically have rounded ends, are made of solid glass, and are about the same length and thickness as a drinking straw.
Stirring rods should be used while decanting supernatants according to proper laboratory technique since the contact helps to minimize the adhesion between the supernatant and the glassware, which is what causes the liquid to run down the side. Furthermore, utilizing a stirring rod provides you greater control over the flow's velocity, which is essential when working with chemicals that could react aggressively.
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Define biotic and abiotic.
A. living and nonliving
B. chemical and physical
C. unicellular and multicellular
D. predator and prey
Answer:
A. living and nonliving
Answer:
the correct answer is A.
biotic = living
abiotic = nonliving
the root 'bio' refers to life
Plant and animal cells also require cytoskeletal proteins for cytokinesis, although the roles these proteins play differ among bacteria, plants, and animals. True or false?.
During the construction cycle of the building, materials and components are delivered to the site. List a strategy that you will use to recycle the waste produced during the construction phase.
The following are some strategies for recycling waste generated during a building's construction:
• Build It Back Into the New Building
• Build to Standard Dimensions
• Find Your Local Recycling Facility,
• Consider Deconstruction Rather Than Demolition and the Savings.
Repurposing construction trash into the new structure or construction site is the most intelligent approach to do it. This may occur in part naturally. Wall demolition is not always necessary when redesigning a space.
Using building materials that are provided in standard measurements may be an option for construction projects. The less you have to modify or make cuts, in addition to the time and effort you will save, the less waste you will produce.
Local is the crucial word here. If transporting construction trash for recycling consumes an excessive amount of time, labor, or petrol, find another solution (like avoiding waste instead). Find out what they accept and when they open at the recycle facility if it is close enough.
Some regions have organizations that collect useful things without causing damage for reuse in social housing projects. The client that is paying for the entire project may also receive tax benefits.
In case you had any reservations, recycling construction waste not only benefits the environment but also presents a chance for increased profitability, better client prices, or both.
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Describe the basic molecular structures and primary functions of the four major categories of biological macromolecules. In your explanation, include their molecular structures, their monomers (building blocks), and their basic function in living organisms.
The four categories of macromolecules are; lipids, carbohydrates, proteins and nucleic acids.
What are the biological macromolecules?The biological macromolecules are those molecules that are very large and can be found in the body which cold also be used for the performance of various functions in the body.
The four basic biological macromolecules are;
1) Lipids; These are the fats that are composed of fatty acids that combine with glycerol and could be broken down to yield energy.
2) Proteins: These are large macromolecules that are held together by the polypeptide linkages and could be broken down to yield amino acids.
3) Carbohydrates: These are the macromolecules that are made up of large units of glucose and they could be broken down to give energy
4) Nucleic acids: These are the macromolecules that are found to be involved in genetic materials.
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you analyzed sugar solutions that were digested and undigested using the same enzyme system as you did to analyze glucose in all other solutions. discuss the components of the sugar solution and how the digestion process affects those components.
Water serves as the solvent and sugar serves as the solute in the sugar solution.
What are the components of sugar solution?
The major components of the sugar solution are water and sugar. True solutions are described as a homogeneous mixture of two or more components dispersed in a fluid with particles smaller than 10-9 m or 1 nm.
The most powerful source of energy for your body comes from the digestion and absorption of sugars. During digestion, starches and sugars are broken down into the single units glucose, fructose, and/or galactose, which are absorbed into the blood stream and transferred for use as energy throughout the body, both mechanically (for example, through chewing) and chemically (for example, by enzymes).The mouth, stomach, and intestines are the sites of digestion.
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Explain some of the processes that may be involved in a scientific investigation such as experimentation and analysis.
Experiments test whether the predictions are correct and the hypotheses are supported. It is important that the experiment is a fair test. Do a fair test by making sure you only change one element of her at a time while keeping all other conditions the same.
The experiments should be repeated several times to ensure that the initial results are not accidental. The basic process is to make observations, form hypotheses, make predictions conduct experiments, and finally analyze the results. The principles of the scientific method can be applied to many fields such as scientific research business and technology.
The six steps of the scientific method include first asking questions about what you are observing second conducting background research to find out what is already known about the subject third forming a hypothesis, and fourth experimenting to test. hypotheses fifth analyze data from experiments and draw conclusions and sixth communicate results to others.
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Which of the following are structural components of the cell membrane?
Answer:
Lipids , proteins, and carbohydrates group
A student is examining an onion cell under a microscope. Based on their observations, the student proposes that the onion cell is in interphase.
Answer:The DNA is beginning to condense and become visible.
Explanation:
The specific chloroplast structure that contains the photosynthetic pigments is the.
Thylakoids contain photosynthetic pigment in the chloroplast.
What is a photosynthetic pigment?
Photosynthetic pigments are a form of natural pigment that aids photosynthesis.
The main groups of photosynthetic pigments consist of:
Chlorophyll.Carotenoids.Phycobilins.Flavonoids.Thylakoids are parts of chloroplasts and cyanobacteria that are surrounded by a membrane. They are where the reactions of photosynthesis that depend on light happen. Thylakoids are made up of a thylakoid membrane and a thylakoid lumen inside. Chloroplast thylakoids often stack up in groups of discs called grana.
Hence, the green pigment chlorophyll is located within the thylakoid membrane, and the space between the thylakoid and the chloroplast membranes is called the stroma.
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Taxol is an anticancer drug extracted from the pacific yew tree that binds to microtubules and prevents their depolymerization. Which phase of mitosis or cell division would be inhibited by treatment with taxol?.
The phase of mitosis or cell division that would be inhibited by treatment with taxol is Metaphase.
What is the metaphase?
Metaphase is a stage during the process of cell division (either mitosis or meiosis) where the nucleus dissolves and the cell's chromosomes condense and move together, aligning in the center of the dividing cell. The alignment of the chromosomes is possible as a result of microtubules.
Taxol an anticancer drug extracted from the pacific yew tree, prevents the microtubules from aligning the chromosomes and hence the chromosomes will not be able to split.
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If research is restricted, then the new discoveries made are limited. Which action is most likely to increase the number of discoveries scientists can make? A. Ignoring the scientific community. B. Declining more private funding. C. Ignoring public opinion. D. Removing government regulations.
The Removal of government regulations, which is a restriction can help in increasing the number of discoveries scientists can make. Thus, the correct option is D.
What is Government funding research?Government funding is the backbone for all the new research and discoveries in the country. Without this funding, the number of discoveries and technology will decline drastically in the country as the research requires a lot of money which every private organization may not be able to provide.
Therefore, by removing the government funding, the research most likely to decrease the number of discoveries that scientists can make through its help.
Therefore, the correct option is D.
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