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At Hardy-Weinberg equilibrium, allele frequencies
Multiple Choice
change from one generation to the next so evolution occurs.
remain constant from one generation to the next so evolution occurs.
change from one generation to the next so evolution does not occur.
remain constant from one generation to the next so evolution does not occur.
None of the answers are correct.
Answers
The correct statement is "remain constant from one generation to the next so evolution does not occur."
At Hardy-Weinberg equilibrium, the allele frequencies in a population remain constant over generations, provided that certain conditions are met, including a large population size, no mutation, no migration, random mating, and no natural selection.
If the allele frequencies change from one generation to the next, this would indicate that the population is not at Hardy-Weinberg equilibrium and evolution is occurring.
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Related Questions
Which sentence in the passage points out the similarity between parthenogenesis and sexual reproduction?
Answers
Answer:
Parthenogenesis is a type of reproduction that does not require a mate. It’s rarely seen in birds and higher vertebrates. Parthenogenesis involves the formation of a zygote. But this zygote is formed without fertilization. In parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.
Explanation:
The sentence in the given passage that points out the similarity between the parthenogenesis and sexual reproduction is “Parthenogenesis involves the formation of a zygote”. It is a form of reproduction in which an ovum is produced without fertilization. Zygote formation us a common process in sexual as well as asexual type of reproduction process. Thus, this is the answer of the question.which of the major events in the evolutionary history of memes involved an increase in the reproduction rate of memes? which involved an increase in the survival of memes?
Answers
The major even to have increased the reproduction rate of memes was communication and the increase in the meme survival occurred due to intervention of the written language.
The term memes was given by a biologist named Dawkins. He perceived memes as the cultural parallel to biological genes. They were considered to be in control of their own reproduction. Memes are theorized as the viral phenomenon that can evolve through natural selection which is analogous to biological evolution.
The three steps in which the evolution of memes occurred are: Mutation, Replication and Selection. Mutation is the solution meme that begins at the start of the life cycle. Replication is when the memes are transferred in communities and Selection is the survival of the fittest.
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Why are amphibian populations declining?
Answers
Destruction of habitats
Global warming
Deforestation
False. The greatest variety of life in Antarctica is found in the southern regions. Can someone tell what is the correct answer. Thanks
Answers
The statement "The greatest variety of life in Antarctica is found in the southern regions" is false because they are characterized by extreme weather conditions and harsh environments that make it difficult for organisms to survive.
Antarctica is the coldest and driest continent on Earth, with most of its surface covered by ice and snow. The southern regions of Antarctica are located farther from the equator and closer to the South Pole, where the temperature is even colder and the conditions are more extreme.
These regions are also affected by strong winds and frequent snowstorms, which make it difficult for plants and animals to survive, the statement is false.
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The correct question is:
The greatest variety of life in Antarctica is found in the southern regions.
True or False
Which factor in a population would result in a shift away from Hardy-Weinberg equilibrium?
Responses
no migration
no migration
small population size
small population size
random mating
random mating
no natural selection
Answers
A population may depart from Hardy-Weinberg equilibrium for a variety of reasons, including non-random mating, mutation, migration, and natural selection.
Small population size is another possible reason. These variables have the potential to alter the population's allele frequencies and deviate from the genotypic and allelic frequencies that the Hardy-Weinberg equilibrium would predict.
Hardy-Weinberg equilibriumA theoretical model called Hardy-Weinberg equilibrium depicts the genetic makeup of a population that is not evolving. A population can diverge from this equilibrium for a number of reasons, including limited population size, non-random mating, mutation, migration, and natural selection.
These variations may alter the frequency of alleles and genotypes, among other critical effects on the genetic makeup of populations.
For a better understanding of the dynamics of evolution in natural populations and for making predictions about how populations may react to selective pressures, genetic drift, or other evolutionary forces, it is crucial to understand the mechanisms that cause a population to depart from Hardy-Weinberg equilibrium.
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In noncyclic photophosphorylation, the electrons passed down through the electron transport system are obtained from?.
Answers
In non cyclic photophosphorylation, the electrons passed down through the electron transport chain are obtained from water.
Non-cyclic phosphorylation have two Photosystems;
1. photosystem I
2. Photosystem II.
They work in series, first PS II and then PS I and are connected through electron transport chain. Electrons moved from PS II and then passed on to PS I.
The release of electrons from PS II can be replaced by some other electrons which can be came by splitting of the water molecule. The complex responsible for splitting of water molecule is present on PS II. Water molecule is converted into H⁺ , O and electrons are released which can be move through electron transport chain.
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Pwease help i beg u
1. What changes might you make to a circuit in order to slow the flow of electrical energy?
2. ___________design electrical circuits for larger power grids and for all kinds of devices such as phones, robots, electric cars, and computers
Answers
1. To slow the flow of electrical energy in a circuit, you can add resistors, increase the resistance in the circuit, or decrease the voltage.
2. Electrical engineers design electrical circuits for larger power grids and various devices such as phones, robots, electric cars, and computers.
1. To slow the flow of electrical energy in a circuit, there are several changes that can be made:
a. Increasing the resistance: Adding resistors to the circuit increases the overall resistance, which reduces the current flowing through the circuit and subsequently slows down the flow of electrical energy.
b. Decreasing the voltage: By reducing the voltage in the circuit, either through a power supply or voltage regulator, the overall energy available for the electrical current to flow is reduced, resulting in a slower flow of electrical energy.
c. Changing the capacitance or inductance: By modifying the capacitance or inductance values in a circuit, such as by adding capacitors or inductors, the rate at which the circuit can store and release energy is altered, affecting the flow of electrical energy.
2. Electrical engineers design electrical circuits for larger power grids and a wide range of devices such as phones, robots, electric cars, and computers. They apply their expertise in designing and analyzing circuits to meet specific requirements and optimize performance.
For larger power grids, electrical engineers design complex systems that involve transformers, transmission lines, and distribution networks to efficiently transmit electrical power over long distances and deliver it to end users.
When it comes to devices like phones, robots, electric cars, and computers, electrical engineers design circuits that provide power, regulate voltages, control signals, and enable communication between components. They consider factors like power consumption, size constraints, safety standards, and efficiency while designing these circuits.
Their role also involves selecting appropriate components, such as integrated circuits, transistors, and sensors, and ensuring that the circuits meet industry standards and specifications.
In conclusion, electrical engineers play a crucial role in designing electrical circuits for both large-scale power grids and various devices, contributing to the efficient and safe utilization of electrical energy.
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Why does water form a spherical shape on wax paper, instead of spreading out flat? Heat capacity makes water molecules release energy. Heat capacity makes water molecules absorb energy. Surface tension makes water molecules sticky. Surface tension attracts water molecules inward.
Answers
Answer:
Surface tension attracts water molecules inward.
Explanation:
About how much energy’s lost when an organism consumes another organism from a different trophic level?
Answers
Answer:
10 percent of energy is transferred to the next level of organisms so that would lead me to believe that 90 percent of the energy is lost.
complete the following sentence correctly. the membrane of a neuron contains many more __________ leak channels than __________ leak channels, and this causes the resting membrane potential to be somewhat near to the equilibrium potential for __________.
Answers
The plasma membrane of a neuron has more potassium(K+) leak channels than sodium(Na+) leak channels. Because of this, K+ ions that leave the cell is greater than the number of Na+ ions that enter the cell.
The neuron's plasma membrane is only minimally permeable to Cl and Na+ and extremely permeable to Potassium (K+). A balance between a high concentration of Na+ and a high concentration of Cl, as well as modest amounts of impermeant anions like bicarbonate, phosphate, and sulphate, is what keeps the extracellular fluid's electroneutrality. The concentration of Cl in the cytoplasm, where K+ concentration is high, is substantially lower than what is required to balance the sum of the positive charges. There, negatively charged impermeant proteins and phosphates keep the environment electroneutral.When the overall concentration of particles on one side is not equal to that on the other, the osmotic balance between the cytoplasm and extracellular fluid is kept by water moving through the plasma membrane.To know more about membrane check the below link:
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Think about the terms predation and parasitism. How would you explain the difference of the two terms to a friend who was confused about these relationships?
Answers
Predation and parasitism are both types of symbiotic relationships, but they differ in the way that one organism benefits from the other.
Predation is a relationship in which one organism (the predator) kills and consumes another organism (the prey) for food. In this relationship, the predator benefits by obtaining a source of food, while the prey is harmed by being killed and consumed.
On the other hand, parasitism is a relationship in which one organism (the parasite) benefits by living on or in another organism (the host), which is harmed by the relationship. The parasite benefits by using the host as a source of food or shelter, while the host is harmed by the loss of resources, damage to tissues, or the spread of disease.
In other words, the key difference between predation and parasitism is that in predation, one organism kills and eats the other for food, while in parasitism, one organism lives on or in the other and benefits at the expense of the host's health.
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Baby scorpions are born with fully developed bodies, each with many special parts such as a stinging tail.
Which process enables baby scorpions to develop various kinds of body parts from a single zygote?
meiosis
reproduction
cell differentiation
cell breakdown
Answers
Answer:
cell differentiation
Explanation:
Answer: cell differentiation
Explanation:
Why do people want to go to Mars? Why did people want to go to the moon? Explain. I couldn't find a good subject to pick, so I chose Biology.
Answers
Filtration, reabsorption, and secretion are the three physiological processes that occur within the nephrons of the kidneys to produce urine. Which of the following statements are FALSE regarding the production of urine? Select all that apply. 1- The amount of fluids ingested affects the volume of the urine excreted. 2- The composition of urine can change daily. 3- Urine always has a pH of 6.0. 4- About 180 liters of filtrate are formed by the glomeruli per day. 5- If materials do not leave blood at the glomerulus, it can never be part of the filtrate.
Answers
The false statements regarding the production of urine are:
3- Urine always has a pH of 6.0.
4- About 180 liters of filtrate are formed by the glomeruli per day.
5- If materials do not leave blood at the glomerulus, it can never be part of the filtrate.
Explanation:
3- Urine does not always have a pH of 6.0.
The pH of urine can vary depending on various factors such as diet, hydration status, and certain medical conditions.
A normal range for urine pH is typically between 4.6 and 8.0.
4- About 180 liters of filtrate are not formed by the glomeruli per day. While about 180 liters of blood plasma do enter the glomeruli per day, the majority of this filtrate is reabsorbed back into the bloodstream, and only a smaller volume (around 1-2 liters) is eventually excreted as urine.
5- If materials do not leave blood at the glomerulus, it does not mean they can never be part of the filtrate.
The glomerulus is responsible for filtering small molecules such as water, ions, and waste products from the blood.
However, some substances may be selectively reabsorbed or secreted in other parts of the nephron, even if they were not initially filtered at the glomerulus.
Therefore, materials can still become part of the filtrate through reabsorption or secretion processes that occur in different segments of the nephron.
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During _________, the chromosomes line up along the equatorial plate.
Answers
Answer:
During METAPHASE the chromosomes line up along the equatorial plate.
The answer is metaphase II
Choose any of the 206 bones there are in the human body. List the form of the selected bone, the function of the selected bone and how its form dictates its function. Make sure the link between form and function is clear.
Answers
The selected bone is the femur, which is the thigh bone in the human body. It is the longest and strongest bone in the body, and its form directly corresponds to its function.
The femur is a long, cylindrical bone with a slightly curved shape. This design provides strength and stability, allowing it to support the body's weight during standing, walking, and running. The femur's shape also enables it to resist bending and torsional forces, reducing the risk of fractures.
At the ends, the femur has rounded surfaces that articulate with the hip socket and the tibia, forming the hip and knee joints, respectively. These smooth, rounded ends facilitate smooth movement and provide a wide range of motion. Thus, the form of the femur, with its length, curvature, and articulating surfaces, is essential in supporting weight, resisting forces, and enabling mobility.
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Select all examples of mutations that are likely to be dominant to wild-type alleles, Check All That Apply A. An amorphic allele of Gene B when Gene Bis haploinsufficient B. A hypomorphic allele of Gene A that reduces its function by 75%, when one wild-type allele of Gene
C. A is sufficient for a wild-type phenotype D. A hypermorphic allele of Gene Cthat encodes a constitutively active protein
E. An antimorphic allele of Gene Dthat encodes a protein that forms homodimers. F. A neomorphic allele of Gene Ethat results in expression of a transcription factor in the wrong cell types,
Answers
Mutations that are likely to be dominant to wild-type alleles are An amorphic allele of Gene B when Gene B is haploinsufficient and A hypermorphic allele of Gene C that encodes a constitutively active protein, option A and D are correct.
The amorphic allele of Gene B (option A) is likely to be dominant if the wild-type allele of Gene B is haploinsufficient. This means that a single copy during mutations of the wild-type allele is not sufficient to produce a normal phenotype, allowing the amorphic allele to manifest its effect dominantly.
Similarly, the hypermorphic allele of Gene C (option D), which encodes a constitutively active protein, is likely to be dominant to the wild-type allele. A hypermorphic allele produces an increased or prolonged gene activity, resulting in a gain-of-function phenotype, option A and D are correct.
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The complete question is:
Select all examples of mutations that are likely to be dominant to wild-type alleles:
A. An amorphic allele of Gene B when Gene Bis haploinsufficient
B. A hypomorphic allele of Gene A that reduces its function by 75%, when one wild-type allele of Gene
C. A is sufficient for a wild-type phenotype
D. A hypermorphic allele of Gene Cthat encodes a constitutively active protein
E. An antimorphic allele of Gene Dthat encodes a protein that forms homodimers.
F. A neomorphic allele of Gene Ethat results in expression of a transcription factor in the wrong cell types,
What is the probability of getting the same numbers on 3 dice when they are thrown simultaneously?
Answers
Answer:
So, assuming the dice are 'fair' (that each of the six numbers has a probability of 1/6 of showing up on each of the dice), there is a probability of 1/36 that all three dice will show the same number.
Explanation:
he following base sequence is given for the dna coding strand: 5' actgttacattg 3'. insertion of the base thymine (t) between the 8th and 9th base may affect how many amino acids? choose 1 answer: 0 1 2 3
Answers
The insertion of the base thymine (T) between the 8th and 9th base in the given DNA coding strand (5' ACTGTTACATTG 3') would affect only 1 amino acid.
Amino acids are encoded by codons, which are three-base sequences on the DNA. Each codon specifies a particular amino acid. In this case, the insertion of thymine (T) between the 8th and 9th bases would create a shift in the reading frame, causing a change in the subsequent codons. As a result, only one amino acid downstream from the insertion site would be affected. The insertion disrupts the original reading frame, leading to a different amino acid sequence after the inserted base.
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PLEASE HELP
In pea plants, yellow seeds are dominant over green seeds. What would be the
expected genotypic ratio in a cross between a plant with green seeds & a plant that
is heterozygous for yellow seed color?
4:1
1:3
1:1
1:2:1
Answers
the amount of food energy converted into biomass by consumers is called secondary production. group of answer choices true false
Answers
True. The statement is true. Secondary production refers to the amount of food energy that is converted into biomass by consumers in an ecosystem.
This includes all the organisms that consume producers (herbivores) as well as other consumers (carnivores, omnivores). Secondary production is an important ecological concept that helps us understand how energy flows through an ecosystem.
The amount of food energy converted into biomass by consumers is called secondary production. Your main answer is: True.
Secondary production refers to the process by which consumers (herbivores and carnivores) convert the energy obtained from consuming primary producers (plants) or other consumers into new biomass. This energy conversion contributes to the overall productivity and functioning of an ecosystem.
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question 92 51) which of the following large biological molecules will self-assemble into a bilayer when mixed with water? a) proteins b) triacylglycerols c) cellulose d) phospholipids
Answers
The large biological molecule that will self-assemble into a bilayer when mixed with water is phospholipids.
Phospholipids are the large biological molecule that will self-assemble into a bilayer when mixed with water. The main feature of a phospholipid is the presence of two hydrophobic fatty acid chains and a hydrophilic head.
These molecules are amphipathic, with a polar (charged) hydrophilic head and nonpolar hydrophobic tail. They can self-assemble into a bilayer due to the hydrophobic effect when mixed with water. The correct option is d) phospholipids.
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What does currency mean? What does the information cycle have to do with currency?
Answers
Currency refers to the system of money that a country or region uses as a medium of exchange for goods and services. It can come in the form of coins, paper bills, or digital units of value. Currency is an essential aspect of modern economies and allows individuals and businesses to conduct transactions with one another.
It also plays a crucial role in international trade and exchange rates. The information cycle has a significant impact on currency because it affects the economic and political conditions of countries, which can cause fluctuations in exchange rates and impact the value of different currencies.
The flow of information about a country's economic health, political stability, and international relations is critical to understanding its currency's value and how it interacts with other currencies around the world. Therefore, keeping up with the information cycle is essential for investors, traders, and policymakers who want to make informed decisions about currency markets.
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Which are the building blocks of carbohydrates?
amino acids
fatty acids
proteins
O glucose
Answers
Proteins are the building blocks of carbohydrates
Cells can move substances directly across their membranes in three general ways: simple diffusion and ________ diffusion, which do not require energy, and _______ transport which requires an input of energy.
Answers
Answer: facilitated active
Explanation:
Cells can move substances directly across their membranes in three general ways: simple diffusion and facilitated diffusion, which do not require energy, and active transport which requires an input of energy.
What is membrane transport?Membrane transport is the mechanism by which solutions and ions are passed across plasma membranes. The membrane, being composed of phospholipids, will generate a part of it that is hydrophobic, which is the part that faces the extracellular and intracellular spaces, and a hydrophilic part that faces the center of the plasma membrane. These characteristics mean that there is a certain degree of fluidity through it depending on its composition and temperature.
This then causes selectivity in it, for this reason it is necessary to form certain channels that allow the passage of compounds that cannot pass through it due to their size or electrical charge. within the types of transport we find: simple diffusion that is through phospholipids and does not require energy, facilitated diffusion that is through channels by its electrochemical gradient and does not require energy and active transport that does require energy and is through of channels.
Therefore, we can confirm that cells can move substances directly across their membranes in three general ways: simple diffusion and facilitated diffusion, which do not require energy, and active transport which requires an input of energy.
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What is the Piaget's theory of cognitive development?
Answers
Piaget's theory of cognitive development proposes that children progress through distinct stages of mental development, characterized by shifts in their understanding of the world and their ability to think, reason, and solve problems.
According to Jean Piaget, a renowned Swiss psychologist, children's cognitive development occurs in four stages: sensorimotor, preoperational, concrete operational, and formal operational. In the sensorimotor stage (birth to 2 years), infants develop object permanence and learn through their senses and motor actions. In the preoperational stage (2 to 7 years), children acquire symbolic representation and engage in pretend play but struggle with logical reasoning.
In the concrete operational stage (7 to 11 years), children become capable of concrete logical thinking and conservation of quantities. Finally, in the formal operational stage (11 years and beyond), adolescents and adults develop abstract thinking, hypothetical reasoning, and advanced problem-solving skills.
Piaget's theory emphasizes the active role of children in constructing their knowledge through interactions with the environment. He proposed that cognitive development is driven by a combination of biological maturation and the child's experiences and interactions with the physical and social world. This theory has had a significant impact on our understanding of child development and has influenced educational practices worldwide.
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where would you expect dissolved oxygen to be at higher levels in the water and available for fish? 1) in ponds 2) in fresh water lakes 3) in shallow fast moving streams 4) in deep slow moving streams
Answers
Dissolved oxygen levels are expected to be higher and more available for fish in shallow fast moving streams and in freshwater lakes.
Shallow fast-moving streams (option 3) typically have higher levels of dissolved oxygen. The fast-moving water promotes oxygenation through aeration and turbulence, allowing for the efficient exchange of gases with the atmosphere. The movement of water helps to mix and distribute oxygen, making it more accessible to fish and other aquatic organisms. Additionally, the presence of riffles and cascades in fast-moving streams further enhances oxygenation.
Freshwater lakes (option 2) also tend to have higher levels of dissolved oxygen. Lakes receive oxygen through a combination of sources, including atmospheric diffusion and oxygen produced by aquatic plants and algae through photosynthesis. The mixing action caused by wind and wave action further helps to distribute oxygen throughout the water column. Additionally, oxygen-rich surface water can penetrate deeper into the lake during periods of turnover or mixing events, further benefiting the fish population.
On the other hand, ponds (option 1) and deep slow-moving streams (option 4) may have lower levels of dissolved oxygen compared to the aforementioned environments. Ponds can be more stagnant with limited water movement, leading to lower oxygenation. Deep slow-moving streams may experience reduced aeration and less mixing, resulting in lower oxygen levels.
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Waste product that forms when muscles
lack oxygen needed for metabolism.
Answers
(Select all that apply.) What are the basic processes which use the energy of respiration?
synthesis
mechanical
reproduction
tissue repair
maintenance
Answers
The basic processes which use energy of respiration are as follows:
reproductionsynthesistissue repairWHAT IS RESPIRATION?Cellular respiration is the process by which living organisms obtain energy by breaking down food molecules in their cells.
Respiration releases energy for use by the cell. The energy is in form of ATP.
The basic processes which use energy of respiration are as follows:
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Can you graph it please
Answers
Answer:
i remember this from freshmen year this is the answer please thank me
Explanation:
