Answer:
When conserving Earth's resources, Ava should buy what cost the least for an ounce.
Explanation:
Option D because it costs the least for an ounce.
Explain how smoking and drinking alcohol by males can affect the development of an embryo.
Identify one factor, other than smoking and drinking alcohol, that may negatively affect a developing embryo.
Smoking and drinking alcohol by males can affect the development of an embryo in the following ways:
cigarette smoke is a mutagen and smoking damages the DNA in sperm cellsdrinking alcohol can damage the quality of sperm and lead to abnormalities in the sperm DNA.What are mutagens?A mutagen is a physical or chemical agent that, in genetics, irreversibly alters genetic material, typically DNA, in an organism. This increases the frequency of mutations over the background level of natural mutations.
Radioactive elements, x-rays, ultraviolet rays, and certain compounds like cigarette smoke are examples of mutagens.
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Many of the types of corn found in grocery stores were originally bred for their taste and productivity. But these varieties are often threatened by pests. This makes it harder for farmers to produce enough corn. Scientists have used genetic engineering to make GMO corn plants that are resistant to pests. In one type of GMO plant, they added genes from bacteria that live in soil. The genes let the GMO plants produce a bacterial protein that kills certain insects.
The ways humans have influenced the traits in corn plants is that It diminishes cost of production on the crop as well as rise the production.
It is a very effective way to protect a maize plant from bacterial infection. To make plants resistant to dangerous pests and microorganisms, practically every plant uses this technique.
Humans have altered the traits of maize plants in such a way as to lower crop production costs while increasing crop output.
Utilizing this technique lowers the cost of crop production, increasing both the overall productivity of the maize crop and the profit to the farmers.
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The given question is incomplete, so the most probable complete question is:
Read the passage. Then explain the ways humans have influenced the traits in corn plants and the impacts each biotechnology has had.
Passage
Many of the types of corn found in grocery stores were originally bred for their taste and productivity. But these varieties are often threatened by pests. This makes it harder for farmers to produce enough corn.
Scientists have used genetic engineering to make GMO corn plants that are resistant to pests. In one type of GMO plant, they added genes from bacteria that live in soil. The genes let the GMO plants produce a bacterial protein that kills certain insects.
Which of the following provides the best explanation about the carbon cycle
Answer:
The carbon cycle is the movement of carbon between the different reservoirs on the earth.
Explanation:
The carbon cycle is the movement of carbon between the different reservoirs on the earth. The key carbon cycles operate at the terrestrial, atmospheric and oceanic levels. Carbon is stored within the atmosphere in land and in oceans, and is moved by various processes. Carbon stores are where the carbon is stored, and fluxes are the movement/transfer of the carbon between stores. Processes are the physical ways in which fluxes happen.
What were the main reasons for Darwin's voyage on the HMS Beagle?
The main reasons for Darwin's voyage on the HMS Beagle were scientific exploration and research.
Charles Darwin's trip on the HMS Beagle was primarily motivated by scientific inquiry, the charting of unexplored territory, and the gathering of specimens from around the globe. He desired to chart harbours and navigational dangers during hydrographic investigations of South American coastlines.
Additionally, he wanted to research geology of places he had been, such as the Andes Mountains, volcanic islands, and coral reefs. Along with this, he also wished to investigate the local flora and wildlife, collecting samples for further examination and research. Darwin noticed that islands frequently lacked the flora and animals that are found on continents during his trip around the globe aboard the HMS Beagle.
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Please help, 70pts
Answer questions individually <3
4. The graph below shows the population of a species over time.
a) Label four parts of the graph:
Exponential growth
Maximum growth
Carrying capacity
Growth slowing down
b.) why does growth slow down?
C.) what are the conditions for exponential growth
A population that experience logistic growth model depends on its density. The exposed curve represents a logistic growth model. a) Labelled image in the attached files. b) because population density increases. c) The conditions for exponential growth is unlimited resources.
What is the logistic growth model?
The logistic growth model, is a population growth model that depends on density.
Natality and mortality depend on the population size, meaning that there is no independence between population growth and population density.
When a population grows in a limited space, density rises gradually and eventually affects the multiplication rate. The population per capita growth rate decreases as population size increases.
The population reaches a maximum point delimited by available resources, such as food or space. This point is known as the carrying capacity, K.
K is a constant that equals population size at the equilibrium point, in which the natality and the mortality rate get qual to each other.
Assuming that population size is N, when
N<K, the population can still grow. N approximates to K, the population´s growth speed decreases. N=K the population reaches equilibrium, N>K, the population must decrease in size because there are not enough resources to maintain that size.The sigmoid curve represents the logistic growth model.
Point A: During this period, the population size is relatively stable. Little growth is expressed. Point B: At the beginning of this period, population growth increases softly. The more individuals are in the population, the more that reaches sexual maturity and get to reproduce, leaving fertile offspring. This fertile offspring also get to reproduce and leave more fertile individuals. At the end of the period, the curve shows a sharp slope, reflecting the significant increase in the population reproductive rate. Point C: At the beginning of this period, the population keeps on growing exponentially. But at the end of the period, the curve tends to stabilize, meaning that the population stops growing in size so fast. The population slow and gradually reaches the equilibrium point, K.Point D: The population got to stabilize.The exposed curve represents a logistic growth model.
a) You will find the labelled image in the attached files.
b) because density increases. The population size is slowly reaching its maximum point (carrying capacity).
c) Expotential growth model does not show density-dependent growth. It means the population can keep growing even when size keeps increasing. Population growth does not depend on population density. The conditions for exponential growth is unlimited resources.
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An experiment was set-up as shown below and left for one hour Peeled potato Sugar Water (a) State the expected result at the end of one hour (b) Explain the observations made in this experiment
Osmosis is the water simple transport through the membrane due to concentration difference. a) After one hour water is expected to move into the potatoe by osmosis. b) The peeled potatoe is acting as a semipermeable membrane. Since the interior of the potatoe is more concentrated than in the exterior, water moves from the exterior to the interior by osmosis.
What is osmosis?
Osmosis is the simple passive transport of water molecules that occurs when two dilutions of different concentrations are separated by a semipermeable membrane.
The membrane allows the pass of water but not solute. Hence, water can move from the most diluted side to the less diluted one.
In the exposed example, we have a cup made of using half a peelled potatoe with sugar inside. This half potatoe is placed on water.
After one hour, water tends to go from the hypotonic solution (most diluted) to the hypertonic solution (more concentrated). This is, from the potatoe exterior to the potatoe interior.
The peeled potatoe is acting as a semipermeable membrane separating two solutions of different oncentration (potatoe interior and potatoe exterior). The solute (in this case is sugar) can not move by simple passive transport through the membrane. But water can, soit moves from the exterior to the interior due to concentration difference.a) The expected result after one hour is water moving into the potatoe by osmosis.
b) The peeled potatoe is acting as a semipermeable membrane. Since solute (sugar) in the interior of the potatoe is more concentrated than in the exterior (where there is only water), water tends to move from the exterior to the interior by osmosis.
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The polar ice cap that once covered the Arctic Ocean is shrinking. Inhabitants of tiny Pacific islands are leaving their homes because the rising ocean is flooding their land. Meanwhile, huge hurricanes, some of the most powerful we've ever seen, have devastated Gulf Coast cities like New Orleans in recent years. A heat wave in Europe sent thermometers over a hundred, setting records across the continent. Why? The answer is global warming. The Earth periodically warms and cools, but in more than 400,000 years, it has not warmed as it is warming now. Global warming means that the average surface temperature worldwide is rising. It's the result of too many greenhouse gases in the air. The problem is most noticeable near the poles, as a warmer planet may result in enough polar ice melting to raise the level of the oceans by many feet. Overflowing oceans would do a lot of damage to our world. Global warming is the result of
Global warming is the result of an increase in greenhouse gases in the air, which leads to the rising average surface temperature worldwide, causing the polar ice caps to melt and contributing to various climate-related phenomena such as flooding and extreme weather events.
The burning of fossil fuels such as coal, oil, and natural gas for energy production is a major contributor to the increased concentration of greenhouse gases.
Industrial processes, deforestation, and agricultural practices also release significant amounts of greenhouse gases like carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O).
These greenhouse gases trap heat in the Earth's atmosphere, causing the planet to warm. This phenomenon is known as the greenhouse effect.
As the concentration of greenhouse gases continues to rise, more heat is trapped, leading to a gradual increase in the average surface temperature of the Earth.
The consequences of global warming are far-reaching and include the shrinking of polar ice caps, rising sea levels, more frequent and intense extreme weather events like hurricanes, and disruptions to ecosystems and biodiversity.
Additionally, global warming can exacerbate heatwaves, droughts, and other climate-related disasters, posing risks to human health, agriculture, and economies worldwide.
Addressing global warming requires collective efforts to reduce greenhouse gas emissions, transition to renewable energy sources, improve energy efficiency, adopt sustainable land use practices, and promote international cooperation to mitigate and adapt to the impacts of climate change.
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4. Analyze: Look at the coral populations in the DATA tab. Why do you think the population of staghorn corals increased?
The population of staghorn corals can increase for several reasons. One significant factor is improved environmental conditions. Staghorn corals require specific environmental conditions to thrive, such as warm water temperatures, clear waters, and moderate water flow.
Another factor that can contribute to an increase in the population of staghorn corals is the reduction of human impact. Human activities such as overfishing, pollution, and climate change can negatively impact coral populations, including staghorn corals. In some cases, natural recovery can also contribute to an increase in the population of staghorn corals. After a coral population has been affected by a disturbance, such as a storm or a disease outbreak, the population may recover naturally if the remaining coral colonies can reproduce and create new colonies.
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Unit 1: Introduction to Science
1) What are each of the following variables and how are they used in this experiment:
Artavious noticed that his music sales were declining. Other companies were doing well by boosting
advertising, so he thought maybe he should as well. He wanted to find out which type of advertising would
boost sales the most, and to make sure that was the factor that made the difference. So he continued using
just word of mouth advertising for his original songs and tracked their sales, changing nothing. He used tiktok
advertising for his new releases and radio advertising for his remixes and tracked their sales. All songs had
the same artist, musicians, and genre.
Independent variable:
Dependent variable:
Constants:
Control:
Inference:
Observation:
From the scenario that has been narrated about the experiment;
Independent variable: Type of advertising used (word of mouth, TikTok, or radio). Its been used to measure the sales of song.
Dependent variable: The sales of his songs. This variable tells Artavious which independent variable gets better response
What are the constant, control and inferences from the experiment?Details from the experiment shows that;
Constants: The artist, musicians, and genre of the songs. This group does not receive the independent variable and provides a baseline for comparison
Control: The songs that continued to use word of mouth advertising.
Inference: This is the conclusion that Artavious draws from the results of the experiment when he measures the sales in response to each advertising platform.
Observation: This would be the data or results that Artavious records during the experiment, such as the number of sales for each type of song after using the different advertising methods.
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features of intensive system in farm management
Answer:
I will anwer the question.
Explanation:
Pasture Intensification. ...
Rotational Grazing. ...
Concentrated Animal Feeding Operations (CAFOs) ...
Crop Irrigation. ...
Genetically Modified Organism (GMO) Seeds. ...
Use of Agrochemicals. ...
Livestock. ...
Aquaculture.
what would happen if someone injected tap water directly into their bloodstream?
Which of the following statements best explains the Coriolis effect?
A. The curvature of the paths of Earth's winds is due to the curvature of the Earth's surface.
B. The curvature of the Earth is due to the movement of straight winds over the surface of the Earth.
C. The curvature of the Earth is due to the curvature of the winds over the surface of the Earth.
D. The curvature of the paths of Earth's winds is due to the movement of the winds over a rotating surface.
Answer: D is correct.
Explanation: A cannot be correct, as wind patterns are not due to the curvature of earth itself. B cannot be correct as winds don't travel in a straight pattern. C cannot be correct because the earth is not curved because of curved win patterns.
Trackers uses 9000 meters in 30 minutes on a average how many meter trackers track each minute
Answer: it is 300
Explanation:
compare the biotic features used to classify different terrestrial and aquatic environments
Biotic features are living components that define and classify environments. Vegetation, like forests and grasslands, can classify terrestrial environments.
What is the biotic features?Vegetation indicates environmental factors; animals vary by terrain. Animal species signal environmental conditions like temperature, precipitation, and food availability.
Water depth signifies aquatic environments. Aquatic environments vary in depth and support diverse aquatic life. Salinity is used to classify them. Freshwater has low salt, while saltwater has high salt. Aquatic species vary by environment. Species presence shows environment factors like temperature, salinity, and nutrients.
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See text below
Compare the biotic features used to classify different terrestrial and aquatic envir
Abiotic feature
Terrestrial
environment:
Terrestrial environment:
desert
rainforest
Aquatic environment: marine
Aquatic environment: lake
Pressure variation
Temperature variation
Nutrient concentration
Salinity
Oxygen availability
Water
availability
Using your own words, how would describe natural selection to someone who was unfamiliar with the term?
Answer: Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.
Explanation:
Which of the following are most difficult to analyze in a questionnaire
study?
semantic differential
items
yes/no items
open-ended items
Likert-type items
Answer:
Open-ended items are more difficult to analyze in a questionnaire study because they produce qualitative results that are not numerically based.
Question 15 of 25
What new knowledge was gained from Frederick Griffith's work with
pneumococci bacteria?
A. Transforming principles exist only in bacteria.
B. Bacteria contain a physical substance that can change the
structure of other bacteria.
C. The transforming principle in bacterial strains is carried by
proteins.
D. Bacterial strains cannot change from one generation to the next.
Frederick Griffith's work discovered the transforming principle in bacteria, which is a physical substance that can change the structure of other bacteria.
Explanation:Frederick Griffith's work with pneumococci bacteria led to the discovery of the transforming principle, which is a physical substance in bacteria that can change the structure of other bacteria. The new knowledge gained from his work was that this transforming principle exists and can be passed from one bacterial strain to another, resulting in new traits being acquired by the recipient bacteria. This discovery was a significant milestone in the field of genetics and laid the foundation for the understanding of genetic transformation.
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Desmond says that the stratosphere has a greater influence on marine life than any other layer of the atmosphere because it prevents the sun’s harmful ultraviolet radiation from reaching Earth and overheating the ocean. What is the main problem with Desmond’s argument?
A.
The stratosphere is not the only place where ozone exists in the atmosphere.
B.
The troposphere helps create upwellings that marine life depends on for nutrients.
C.
The mesosphere is above the stratosphere, and it filters ultraviolet radiation first.
D.
The thermosphere hosts the satellites used to study changes to oceans and marine life.
what are the two aspects importance of observation
Two aspects importance of observation is it helps in gathering information and details.
Both quantitative and qualitative observations are possible. Measurements or projections that provide definable, quantifiable outcomes are included in quantitative observations. Results from qualitative observations are descriptive and not quantifiable.
Gathering knowledge and facts enables parents, instructors, and guides to respond to circumstances rather than only reacting to them. It aids in tracking developmental changes in kids during their vulnerable years. It aids parents, educators, and mentors in accepting that each child is unique.
Therefore, two aspects of observation are gathering information and details.
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Observe the spores on a polytrichum slide. since each of these spores may have the potential to develop into a clump of moss gametophytes, how can you explain the large number of spores produced?
Answer: a
Explanation:
I jus took the test
James is making models of plant and animal cells using objects supplied by his teacher to represent organelles. For one cell, he will place the objects in a shoebox. First he fills a balloon with water and places it in the shoe box. He also drops a handful of marbles into the box.
Which statement most likely describes the structures he has represented so far?
What function do chloroplasts perform?
The statement that most likely describes the structures he has represented so far is He is making a plant cell. The box is the cell wall, and the balloon represents the large vacuole. The marbles are the tiny ribosomes. chloroplasts helps in the conversion of light energy.
What are organelles?An organelle can be described as the subcellular structure that that is been found in the cell which can carry out specific jobs.
It shoud be noted that the chloroplasts the are plant cell organelles that convert light energy which then turn it to the chemical energy via the photosynthetic process.
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complete question;
James is making models of plant and animal cells using objects supplied by his teacher to represent organelles. For one cell, he will place the objects in a shoebox. First he fills a balloon with water and places it in the shoe box. He also drops a handful of marbles into the box. Which statement most likely describes the structures he has represented so far? He is making an animal cell. The box is the cell membrane, and the balloon represents the large vacuole. The marbles are the endoplasmic reticulum. He is making a plant cell. The box is the cell wall, and the balloon represents the large vacuole. The marbles are the tiny ribosomes. He is making a plant cell. The box is the cell wall, and the balloon represents the nucleus. The marbles are the centrioles. He could be making either a plant or animal cell. The box is the cell wall, and the balloon represents the large vacuole. The marbles are the centrioles.
c) stretch and challenge fertilisation in terms of cellular and intra cellular changes.
Fertilization is the process by which a sperm cell fuses with an egg cell to form a zygote, which eventually develops into an embryo.
At the cellular level, fertilization involves the fusion of two haploid cells (sperm and egg) to form a diploid cell (zygote). During fertilization, the sperm undergoes a series of changes that enable it to penetrate the egg's protective outer layer, known as the zona pellucida.
At the intracellular level, fertilization triggers a series of events that lead to the formation of the blastula, the first stage of embryonic development. Fertilization triggers the release of calcium ions within the egg, which activates a series of enzymes and signaling pathways that stimulate cell division and differentiation.
Fertilization also leads to the formation of the germ layers, which are the three distinct layers of cells that give rise to all the tissues and organs of the developing embryo.
The germ layers are formed through a process called gastrulation, which is initiated by a group of cells known as the organizer. The organizer secretes signaling molecules that direct nearby cells to differentiate into the three germ layers: the endoderm, mesoderm, and ectoderm.
In conclusion, fertilization involves a series of complex cellular and intracellular changes that lead to the formation of a new life. At the cellular level, fertilization involves the fusion of haploid cells to form a diploid cell.
At the intracellular level, fertilization triggers a series of events that lead to the formation of the blastula and the germ layers, which are essential for the development of all the tissues and organs of the developing embryo.
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One possible way to increase the number of hydrogens and electrons in the electron transport chain is to enhance the efficiency of the processes that produce and store these molecules within the cell. One approach could be to increase the production of ___________ and ___________, which are the electron carriers that donate electrons to the electron transport chain. These molecules are generated during __________
and the ____________, , which are the initial steps of cellular respiration. Thus, by enhancing the activity of these pathways, more __________
and __________ could be produced and delivered to the electron transport chain.
This could be achieved through strategies such as _________, which has been shown to increase the activity of these metabolic pathways. Another approach could be to improve the function of the mitochondrial membranes, which play a crucial role in the electron transport chain. The _________ contains complexes I, III, and IV, which transport electrons and pump __________
to generate the __________ gradient that drives ATP synthesis. By optimizing the structure and function of these complexes, the efficiency of the electron transport chain could be increased. One way to do this is through the use of antioxidants, which can protect the mitochondrial membranes from damage and improve their function.
Possible Terms:
NADH, FADH2, ATP, glycolysis, citric acid cycle, Electron Transport Chain, exercise, rest, Inner membrane, outer membrane, hydrogen, electrochemical
One possible way to increase the number of hydrogens and electrons in the electron transport chain is to enhance the efficiency of the processes that produce and store these molecules within the cell.
One approach could be to increase the production of NADH and FADH2, which are the electron carriers that donate electrons to the electron transport chain.
These molecules are generated during glycolysis and the citric acid cycle, which are the initial steps of cellular respiration.
Thus, by enhancing the activity of these pathways, more NADH and FADH2 could be produced and delivered to the electron transport chain.
We can achieve this through strategies such as exercise, which has been shown to increase the activity of these metabolic pathways. Another approach could be to improve the function of the mitochondrial membranes, which play a crucial role in the electron transport chain.
The inner membrane also contains complexes I, III, and IV, which transport electrons and pump hydrogen to generate the electrochemical gradient that drives ATP synthesis. By optimizing the structure and function of these complexes, the efficiency of the electron transport chain could be increased.
What is an electron transport chain?An electron transport chain is described as a collection of protein complexes and other molecules that associate protons across a membrane with the transfer of electrons from electron donors to electron acceptors through redox processes.
In conclusion, we know that the primary function of the electron transport chain is to generate an electrochemical gradient which is utilized in cellular respiration.
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How does a flexible esophagus help a snake take in whole food?
Answer:
The esophagus of snakes has more internal folds than other reptiles, which allows for the swallowing of large, whole prey. Peristaltic movement within the esophagus moves the food downward towards the stomach.
Hope this helps :)
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Hello please I need help for this exercise. Glucose was found in Mr Diarra's urine after the analysis. He also has high blood pressure.
-What disease does Mr. Diarra suffer from?
- Give advice to Mr Diarra for the treatment of his disease.
He could be suffering from Diabetes
He should follow regular exercise and an amended dieting plan.
What should He do?He might be given advice on how to regulate his blood sugar levels through lifestyle changes like consistent exercise, a nutritious diet, and weight control.
To help control his blood sugar levels, his healthcare professional might also prescribe drugs like insulin or oral hypoglycemics. To monitor his condition and make any required modifications to his treatment plan, Mr. Diarra must adhere to the advice of his doctor and schedule routine checkups.
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The rates at which these rocks form is different. which of the following explanations matches the scale in which each type of rock forms?
A. Metamorphic rocks would take the longest because magma has to come out of a volcano first, which is a slow process
B. Igneous rocks form quickly due to contact with high heat, sedimentary and metamorphic are longer processes
C. There is no pattern to how these rocks are formed, so we can not determine the rate at which they formed
D. Sedimentary rocks would take the longest, since they need to be transported, while igneous rock would form slowly
Option B. Igneous rocks form quickly due to contact with high heat, sedimentary and metamorphic are longer processes.
How does rock form?Igneous rocks form from the cooling and solidification of molten rock (magma or lava), which can happen relatively quickly depending on the circumstances.
Sedimentary rocks form from the accumulation and compression of sediment over long periods of time, often millions of years.
Metamorphic rocks form from the alteration of pre-existing rocks due to heat, pressure, or chemical reactions, which can also take place over long periods of time.
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1. Conditions happen to be really good this year for breeding and next year there are 1,245 young
"potential" Biology instructors. Assuming that all of the Hardy-Weinberg conditions are met, how many of
these would you expect to have poor vision and how many with good vision?
2.A very large population of randomly-mating laboratory mice contains 35% white mice. White coloring is
caused by the recessive genotype, "aa". Calculate allelic and genotypic frequencies for this population.
3. The ability to taste PTC is due to a single dominate allele "T". You sampled 215 individuals in biology, and
determined that 150 could detect the bitter taste of PTC and 65 could not. Calculate allelic and genotypic
frequencies for this population..
On the conditions being really good this year for breeding:
153 young "potential" Biology instructors to have poor vision and 525 to have good vision. 15% of the mice will be homozygous dominant (AA), 47% will be heterozygous (Aa), and 38% will be homozygous recessive (aa).49% of the individuals will be homozygous dominant (TT), 39% will be heterozygous (Tt), and 12% will be homozygous recessive (tt).How to calculate frequencies?1. The Hardy-Weinberg principle states that in a population in which mating is random, the frequency of alleles will remain constant from generation to generation. This means that if the frequency of the allele for poor vision is p and the frequency of the allele for good vision is q, then the frequency of each genotype will be:
AA = p²
Aa = 2pq
aa = q²
In this case, the frequency of poor vision is 0.35, so p = 0.35 and q = 0.65. This means that the frequency of each genotype will be:
AA = (0.35)² = 0.1225
Aa = 2(0.35)(0.65) = 0.4225
aa = (0.65)² = 0.4225
Therefore, we would expect 1,245 × 0.1225 = 153 young "potential" Biology instructors to have poor vision and 1,245 × 0.4225 = 525 to have good vision.
2. The allele for white coloring is recessive, so the only way for a mouse to be white is if it inherits two copies of the recessive allele. If the frequency of the white allele is q, then the frequency of white mice will be q². In this case, 35% of the mice are white, so q = 0.588. This means that the frequency of the white allele is 0.588 and the frequency of the non-white allele is 0.412.
The genotypic frequencies can be calculated using the Hardy-Weinberg principle:
AA = p² = (0.412)² = 0.169
Aa = 2pq = 2(0.412)(0.588) = 0.472
aa = q² = (0.588)² = 0.338
Therefore, 15% of the mice will be homozygous dominant (AA), 47% will be heterozygous (Aa), and 38% will be homozygous recessive (aa).
3. The ability to taste PTC is due to a single dominant allele "T". If the frequency of the T allele is p, then the frequency of the t allele is q = 1 - p. In this case, 150 of the 215 individuals could detect the bitter taste of PTC, which means that p = 0.702. This means that the frequency of the T allele is 0.702 and the frequency of the t allele is 0.298.
The genotypic frequencies can be calculated using the Hardy-Weinberg principle:
TT = p² = (0.702)² = 0.492
Tt = 2pq = 2(0.702)(0.298) = 0.392
tt = q² = (0.298)² = 0.088
Therefore, 49% of the individuals will be homozygous dominant (TT), 39% will be heterozygous (Tt), and 12% will be homozygous recessive (tt).
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Know and Understand
Answer the following questions using the information provided in this chapter.
1. What is an agricultural pest?
2. What is integrated pest management?
3. What are pesticides?
4. What are some types of pesticides used to control selected or target pest populations?
5. What is an herbicide and when are post-emergent herbicides used?
6. What are four ways to control slugs besides using a molluscicide?
7. What are three types of biopesticides?
8. Describe the type of biopesticide called a plant incorporated protectant.
9. What are four types of substances that can be included in a pesticide formulation?
10. What are six formulations in which pesticides are available?
11. What type of legal repercussion may result from failure to comply with the directions of
a pesticide label?
12. What are some types of important information found on a pesticide label?
13. What do the signal words caution, warning, and danger mean when printed on a
pesticide label?
14. What must a person do to qualify as a certified applicator?
15. Why should a pesticide applicator cover as much of his or her bare skin as possible?
16. What are some safety protocols that should be followed when mixing pesticides?
17. When is the best time of day to apply pesticides in a garden and why?
18. What are four ways poison can enter an organism?
19. What should you do in the event of a pesticide poisoning?
20. What guidelines should you keep in mind when storing pesticides?
Following are the answers:
Organism that negatively affects agricultural crops or livestock.
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In the nineteenth century, what was the primary concern of marine scientists?
A.
defining and documenting species
B.
identifying the layers of the ocean
C.
understanding the behavior of currents
D.
finding natural resources in the ocean
Answer:
A
Explanation:
defining and documenting species
Please explain why this answer is correct in your own words.
You must include these three words within your explanation: Law of Conservation Of Mass, Chemical Change, and Physical Change.
1.Ice melting is a physical change
2.Eggs cooking is a chemical change
3.Salt dissolving is a physical change
4.Wood burning is a chemical change
5. Fireworks exploding is a chemical change
Physical and Chemical changesA substance can change physically even when no new substance is created as a result of the change. It simply modifies the substance's outward attributes, such as its shape, size, texture, or phase (such as solid, liquid, or gas).
When a compound undergoes a chemical change, a new substance or substances with new chemical properties are created. Chemical bonds are broken and formed as a result of this process, which transforms one or more chemicals into one or more new substances. Chemical changes can release or absorb energy (heat, light, or sound), and they are frequently irreversible.
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