During a study, a biologist counts the allele frequency of the colors of beetles. In the original population, there were 25% green, 35% blue, and 40% golden beetles. She took a small sample from the original population and bred them for 5 years. At the end of the study, 5 years later, there were 10% green, 60% blue, and 30% golden beetles. What did she observe?
Answers
Answer: As the years move on the green allele frequency of the beetles is going extinct while golden Blue beetles are rapidly overtaking the population and golden beetles are lowering in population but are not going extinct as quickly as the green beetles
Explanation:
Related Questions
Choose one sort of diversity (for example, age, gender, etc.)
and explain why it is essential as a factor in your opinion.
Answers
The type of diversity that I have chosen is ‘Gender Diversity’ and below are the reasons why it is essential as a factor in my opinion.
Gender diversity refers to the representation of both men and women in the workplace and society as a whole. It includes people of all genders, including non-binary individuals. Gender diversity has a significant impact on the workplace and society in general. As women are still underrepresented in many industries and roles, increasing gender diversity can lead to more opportunities for women and help break down gender stereotypes.
By having a gender-diverse workplace, companies can ensure compliance with these laws and avoid penalties or legal issues in the future.In conclusion, gender diversity is essential because it promotes a more inclusive environment, encourages innovation and creativity, and leads to better decision-making. By having a gender-diverse workplace, companies can improve employee satisfaction, increase profitability, reduce discrimination and biases, and ensure compliance with laws related to gender diversity.
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Please tell me what the correct answer is
Answers
In an Antarctic pelagic community, the primary producers are phytoplankton, which serve as food for the dominant grazing zooplankton, especially krill and copepods, both of which are crustaceans.
These zooplankton species are in turn eaten by various carnivores, including other plankton, penguins, seals, fish, and baleen whales. Squids, which are carnivores that feed on fish and zooplankton, are another important link in these food webs, as they are in turn eaten by seals and toothed whales (Figure 1).
Figure 1: Arrows follow the transfer of food from the producers (phytoplankton) up through the trophic levels. For simplicity, this diagram omits decomposers.
Antarctic krill (Euphausia superba) is an important source of food for whales, seals, squid, fish, and many species of birds. Its abundant biomass is one of the largest on Earth. Figure 2 compares the effects of krill harvesting on species richness within two small sections of the Antarctic region; one section was subject to krill harvesting and the other section was not.
Describe how the autotrophs facilitates the flow of energy through the Antarctic ecosystem. In the Antarctic pelagic community, there are three types of seals. The leopard seals eat birds, but the crabeater and elephant seals do not. Explain how the interactions between seals and other species may affect their food sources.
Identify the independent variable of the data graphed in Figure 2. Explain one way this variable is affecting the biodiversity of the Antarctic food web.
Analyze the change in species richness with or without krill harvesting. Predict how the removal of krill from the Antarctic ecosystem will affect its long-term structure.
Justify the claim that the Antarctic krill is a foundation species, not a keystone species. Provide evidence to support your claim.
Answers
Answer:
a) the autotrophs produce their own energy in their system and synthesize surrounding energy, which allows for the flow of energy as they are the primary producers at the bottom of the food web shown in figure 1 who transfer and facilitate their energy when they are consumed by the organisms in higher levels. This facilitation of energy continues where the population of these autotrophs is stable and the cycle of consumption and synthesis of energy from one trophic level to another and there is a diverse amount of energy distributed in the ecosystem. The leopard and Elephant seals have a similar food preference which may cause competition for resources in the ecosystem between the two more than that of the crabeater seal as they rely solely on krill in the ecosystem to survive. If there was more competition for the krill or a decrease in population, their population is sure to suffer as well.
b) The year is independent of the number of species in the data graphed. This variable affects the biodiversity in the food web where we witness the number of species (hundreds) likely to witness an increase over time when krill are harvested and a decrease in the number of species without krill harvesting. This, in turn, may prove that krill is a keystone species crucial in the food web and ecosystem where the antarctic krill population's presence will influence the number of species as well.
c) The changes in species richness with krill harvesting, as per mentioned, will show an increase in species number as the krill's energy is transferred throughout the ecosystem by consumption, as implied in the food web. The changes in species richness with a lack of krill harvesting, or some organisms unable to consume the energy of the krill, was shown to have a decrease in species # over the years. This will affect the long term structure of the ecosystem as the organisms who rely on krill and even those in the trophic levels which rely on species who consume krill will drop dramatically, and the lowering of the number of organisms in a keystone species will cause a decrease in speciation of the ecosystem (possibly quite rapidly due to the dependence we witness on it) as well as a disruption in the energy flow.
d) we can affirm that the krill are in fact not a foundation species, but a keystone species as they show no specific traits of facilitating the populations of the species in the ecosystem, and don't appear to benefit other species in the ways foundation species do (ie. they are autotrophs and cannot provide shelter for other species, but we can also say that they are the sole energy producers for the crabeater seals, which can be a trait of a foundation species)- instead exhibiting the traits of a keystone species as they produce an abundance of energy in the ecosystem and the removal of them (as shown in figure 2), causes a population decrease all around.
Explanation:
ur welcome i just did this myself so pls paraphrase as much as u can also like a bit of an explanation its kinda obvious from the chart that they all rely on the krill and stuff so removing it (or not harvesting or something) would be bad. again pls paraphrase as much as u can and good luck
In his trips to the Galapagos Islands, Charles Darwin observed that 4 of the 13 species of the islands' finches have beaks adapted to eating specific foods. Which of the following best explains how these adaptations came to be?
A.) The finches were different species but resemble each other because of how they evolved in a similar environment.
B.) The finches descended from a common ancestor but evolved differently in response to their environment.
C.) The finches descended from the same ancestor but evolved along their own lines in isolation from each other.
D.) The finches descended from similar ancestors and have evolved adaptations in response to each other's influences.
Answers
B is the best response to this query. Despite sharing a similar progenitor, the finches have developed in distinct ways depending on their environments.
This is a result of the Galapagos Islands' isolation from the rest of the world and the generations-long isolation of the island's resident finches. Since they can adapt to their surroundings in different ways and have diverse beak shapes and sizes to eat on various sorts of food, finches have been able to evolve independently.
This phenomenon, known as adaptive radiation, explains why the Galapagos finches have developed distinctive beaks tailored for consuming particular foods.
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The action of hormones such as epinephrine and norepinephrine stimulates __________ to maintain pressure in the system and, as a result, perfusion of all vital organs.
An increase in heart rate; An increase in the strength of cardiac contractions; Vasoconstriction in nonessential areas; ALL OF THESE ANSWERS ARE CORRECT
Answers
The action of hormones such as epinephrine and norepinephrine stimulates an increase in heart rate; an increase in the strength of cardiac contractions; and vasoconstriction in nonessential areas;
Functions of epinephrine and norepinephrineHormones such as epinephrine and norepinephrine play a role in maintaining blood pressure and perfusion of vital organs. These hormones have multiple effects on the cardiovascular system.
They can increase heart rate, leading to an increase in the amount of blood pumped by the heart per minute. Additionally, they can increase the strength of cardiac contractions, resulting in a greater force of blood being pumped with each heartbeat.
Furthermore, these hormones can cause vasoconstriction in nonessential areas, redirecting blood flow to essential organs like the heart, brain, and lungs. These combined actions help maintain blood pressure and ensure adequate perfusion of all vital organs.
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true or false: the variations in human skin color can be classified as good or bad.
Answers
False. Human skin color variations don't automatically carry a "good" or "bad" value judgement.
The skin color is nothing but just a biological trait and nothing else that is just a result of the interaction between the different variation causing variables. Certain skin tones have historically been connected with value judgements due to the social construct of race and related prejudices, although these judgements are not founded in actual scientific data.
The amount and kind of melanin pigment generated by specialized skin cells called melanocytes determines the color of human skin. The melanin production depends heavily on the environmental factor which ultimately leads to the different skin color.
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Up to this point, did you notice any differences between the development of male and
female gametes?
Explain
Answers
Both male and female gametes are produced by different organs and in different sizes.
The main difference between male and female gametes is that male gametes which are known as sperm cells are produced in large numbers by the male reproductive organs whereas female gametes are called egg cells which are produced single at a time by the female reproductive organs.
Both male and female gametes are formed by meiosis type cell division. The female gamete is a large in size and motile while the male gamete is small in size and also motile so we can conclude that both gametes are produced by different organs, numbers and sizes.
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this is my question :>
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What macromolecule is produced during translation?
O A. Carbohydrate
O B. RNA
O C. Protein
O D. DNA
Answers
Protein
It’s on ape x
If the MC1R protein is 317 amino acids long, why are there 954 base pairs in the coding region of the gene?
Answers
Answer/Explanation:
Each amino acid is coded for by three nucleotides of mRNA during the process of translation. These three nucleotides are called codons.
Therefore, if the MC1R gene has 317 amino acids, then there were 3 x 317 nucleotides coding for the gene. 3 x 317 = 951.
The additional 3 nucleotides that make up the 954 nucleotides in the coding sequence come from the stop codon, which does not code for an amino acid but instead signals the end of translation.
Genes can be inserted into plasmid DNA and cloned into bacteria. This will produce bacteria that have recombinant DNA and will Enter your search term O produce the product of the inserted gene. O make multiple coples of the inserted DNA. O produce offspring that also carry the recombinant DNA.O All of the answer choices are correct.
Answers
Plasmid DNA can be used to clone genes into bacteria. This will result in the creation of bacteria with recombinant DNA that will produce the inserted gene's product as well as numerous copies of the inserted DNA.
Is it possible to clone bacteria by inserting genes into plasmid DNA?A plasmid vector can be modified by researchers to incorporate DNA snippets or genes, resulting in a recombinant plasmid. The transformation procedure can be used to insert this plasmid into a bacterium.
What is the name of the process of plasmid DNA insertion into bacteria?Molecular cloning, often known as gene cloning, is the technique of inserting a gene into a vector. The majority of vectors are built on plasmids, which are brief circular DNA sequences that naturally exist in bacteria.
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I WILL PICK THE FIRST RIGHT ANSWER AS BRAINLIEST!
Based on this swamp food web, —
A.
45% of the energy in snails is passed to alligators.
B.
25% of the energy in algae is passed to dragonflies.
C.
90% of the energy in bullfrogs is passed to dragonflies.
D.
10% of the energy in small fish is passed to alligators.
Answers
Answer:
I believe it's
A. 45% of the energy in snails is passed to alligators.
Uranus is unique because it is the only planet
discovered by mathematical calculations
that rotates on its side
with an atmosphere
with rings
Answers
Answer:
rotates on it's side
Explanation:
The concept of evolution by way of natural selection is a central tenet in biology that has been tested in numerous ways by many scientists. Evolution by way of natural selection is most likely which type of concept?
A. an explanation of phenomena that can be accepted as true because it is supported by repeated observations and experimentation
B. a likelihood based on the chance that a particular event will or will not occur during an experiment
C. a testable explanation or answer to a scientific question based on prior knowledge or research
D. a statement of fact that is accepted as true because it has always been observed to be true through observations and experimentation
Answers
Answer:
I know I am too late to help you, but I couldn't find an answer when looking for this question. I got it right and it is A. an explanation of phenomena that can be accepted as true because it is supported by repeated observations and experimentation.
Explanation:
Evolution by way of natural selection is most likely an explanation of phenomena that can be accepted as true because it is supported by repeated observations and experimentation. The correct option is A.
What is natural selection?Natural selection is the process through which organisms that are more adapted to their environment tend to survive and reproduce more than those that are not. Tree frogs, for example, are occasionally eaten by snakes and birds.
Evolution is a process in which living things or other evolve or change over time. Natural selection is also a reason for evolution, which takes a large amount of time.
Therefore, the correct option is A. an explanation of phenomena that can be accepted as true because it is supported by repeated observations and experimentation
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2. What is the importance of NAD+ cycling back up to glycolysis?
Answers
The cycling of NAD+ back up to glycolysis is crucial for sustaining energy production, maintaining redox balance, and allowing for the efficient functioning of cellular respiration.
The cycling of NAD+ back up to glycolysis is crucial for the efficient functioning of cellular respiration and energy production. Here are the key reasons for its importance:
NAD+ regeneration: During glycolysis, glucose is metabolized to produce energy in the form of ATP. As part of this process, NAD+ acts as an electron carrier, accepting electrons from glucose and becoming reduced to NADH. NADH carries these electrons to the electron transport chain for further ATP synthesis. However, NAD+ is required to sustain glycolysis. Without a mechanism to regenerate NAD+ from NADH, the glycolytic pathway would quickly halt due to a lack of available NAD+. Therefore, the cycling of NAD+ is crucial for maintaining a continuous supply of NAD+ for glycolysis.ATP production: The regeneration of NAD+ is directly linked to ATP production. NADH carries high-energy electrons to the electron transport chain, where they are used to generate ATP through oxidative phosphorylation. If NADH accumulates and NAD+ levels decrease, electron transport and ATP synthesis would be compromised, resulting in reduced energy production.Redox balance: The cycling of NAD+ is essential for maintaining redox balance within the cell. As NAD+ accepts electrons during glycolysis, it becomes reduced to NADH. Regenerating NAD+ from NADH helps balance the cellular redox state, ensuring that other redox reactions in the cell can proceed smoothly. Without NAD+ cycling, an imbalance in the redox state could lead to disruptions in various metabolic pathways and compromise cellular function.Learn more about Glycolysis, here:
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If the parent strand is T C G T G C A C G G A what would the daughter strand be ?
Answers
Answer:
A G C A C G T G C C T
Explanation:
what might be a more reliable
way to classify organisms.
Answers
Answer: Taxonomical classification
Explanation: This is the most reliable because, all living organisms needed to be classified in groups to find out their similarities and differences.
tyner et al. (2002) found that strains of mice with elevated expression of the protein p53 ________________________________.
Answers
Tyner et al. (2002) found that strains of mice with elevated expression of the protein p53 (b) were less likely to develop tumors than wild-type mice with normal expression of p53.
In the study by Tyner et al. (2002), they found that strains of mice with elevated expression of the protein p53 were less likely to develop tumors than wild-type mice with normal expression of p53. This finding suggests that increased levels of p53 have a protective effect against tumor development in mice.
p53 is a tumor suppressor protein that plays a crucial role in regulating cell growth and division. It functions as a transcription factor, activating the expression of genes involved in cell cycle arrest, DNA repair, and apoptosis (programmed cell death) in response to cellular stress or DNA damage. Mutations in the p53 gene are common in many types of cancer, leading to loss of its tumor suppressor function.
The study used genetically modified mice that overexpressed the p53 protein, as well as wild-type mice with normal levels of p53 expression, and compared their tumor incidence rates. The results showed that the p53 overexpression mice had a significantly lower incidence of spontaneous tumors, as well as a reduced susceptibility to chemically-induced tumors, compared to the wild-type mice.
These findings suggest that p53 plays a critical role in suppressing tumor development in mice, and that strategies aimed at increasing p53 expression or activity could have therapeutic potential in the treatment or prevention of cancer. However, further research is needed to fully understand the mechanisms underlying the protective effects of p53, as well as its potential role in human cancer.
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Complete question :
Tyner et al. (2002) found that strains of mice with elevated expression of the protein p53 O
a. had shorter lifespans than wild-type mice with normal expression of p53
b. were less likely to develop tumors that wild-type mice with normal expression of p53
c. had longer lifespans than wild-type mice with normal expression of p53
d. were more likely to develop tumors than wild-type mice with normal expression of p53
e. Answers A and B are both correct
f. Answers C and D are both correct
Compare activators to repressors.
Answers
Explanation:
Activators (and sometimes inducers) instigate positive regulation, and repressors instigate negative regulation.
The universe is described as:
everything in our solar system
a cloud of gas and dust where stars are born
all of space and everything in it
Answers
Jezelyn needs to create a project that shows geographic isolation in action and decides to make a video. Which of the following would make the best project?
Answers
Answer:
a video that shows penguin species that have different mating dances
Explanation:
The question is incomplete as it does not have the options which are:
a video that shows a large river that has penguin populations on both sidesa video that shows penguin species that have different mating dancesa video that shows a penguin that is laying eggsa video that shows penguins in a tidal pool and an open oceanAnswer:
a video that shows penguin species that have different mating dances
The reproductive isolation is the factor which allows the species to evolve and form a new species, therefore, this factor is used to describe a species.
The reproductive isolation refers to a mechanism in which the species are isolated to not interbreed with the individual of other species. The reproductive isolation could be due to behavioural, psychological, physical or genetic differences. evolved as an adaptation.
In the given cases, the penguin species which shows different mating dances is considered to be reproductively isolated as the different dance rituals evolved as behaviour to prevent them from mating.
Thus, the selected option is correct.
A video that shows a large river that has penguin populations on both sides would make the best project. So, the correct option is A.
What is Population?A population is defined as the complete set of individuals, whether that group includes a nation or a group of people with a common characteristic which is the pool of individuals from which a statistical sample is drawn for a study. .
It is described as a unit of biological community made up of a permanent group of an interbreeding individual of a species found in a space or geographic region at a particular time. Population are of three types of population pyramids created from age-sex distributions-- expansive, constrictive and stationary.
Thus, a video that shows a large river that has penguin populations on both sides would make the best project. So, the correct option is A.
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Your question is incomplete, most probably the complete question is:
Jezelyn needs to create a project that shows geographic isolation in action and decides to make a video. Which of the following would make the best project?
a video that shows a large river that has penguin populations on both sidesa video that shows penguin species that have different mating dancesa video that shows a penguin that is laying eggsa video that shows penguins in a tidal pool and an open oceanWhich of the following statements is not part of the cell theory. 1. Cells are the basic unit of structure and function in all living things
2. All cells are produced from other cells
3. Only animal cells are composed of cells
4. All living things are composed of cells
Answers
Answer:
your answer is option 3
For every bacterial cell that undergoes sporulation, there are two resulting bacterial cells. O True False
Answers
The statement "For every bacterial cell that undergoes sporulation, there are two resulting bacterial cells" is false. Sporulation is a process where some bacteria transform into a dormant state called a spore. Only one spore is produced per bacterial cell during sporulation.
Bacterial sporulation is a process where some bacteria convert to a dormant state called a spore. Sporulation can occur in some bacteria species under stress conditions such as a lack of nutrients. Sporulation starts when the bacterial cell divides into two unequal-sized compartments. One compartment is the smaller forespore while the other is the larger mother cell.
The mother cell engulfs the forespore within itself and forms a spore. Only one spore is produced per bacterial cell during sporulation. These spores can survive in harsh environments and then germinate into new bacterial cells when conditions are favorable again. Therefore, the statement "For every bacterial cell that undergoes sporulation, there are two resulting bacterial cells" is false.
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Based on this picture:
A. How many chromosomes should be in a normal gamete?
B. What would be different about a child made from the fusion of a normal egg with a sperm like
the 3rd daughter cell pictured?
C. What would be different about a child made from the fusion of a normal egg with a sperm like the 44 daughter cell pictured?
Please help!!!!!
Answers
A typical gamete, sometimes referred to as a sex cell, should have half as many chromosomes as a typical body cell. The third daughter cell visible in the photograph appears to have an extra chromosome, making the total number of chromosomes there 47 rather than the typical 46.
How many chromosomes should a typical gamete contain?In humans, gametes are haploid cells with 23 chromosomes—one of each chromosomal pair found in diplod cells—and are hence haploid. The haploid number, commonly known as n, is used to indicate the number of chromosomes in a single pair.
When compared to the cells of the offspring, how many chromosomes are present in gametes?Gametes are haploid because they have half as many DNA bases as from the initial diploid germ cell's chromosomes. In other words, the secondary gametes only have one set (23), whereas the germ cell had two sets (46) of chromosomes.
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In which biome is this food web most likely to be found? (picture below)
Answers
EXPLANATION/ANSWER:
Since no trees are involved, it may be grassland. Grasslands are open areas with mostly grasses maintained by grazing animals like the impala seen in the photo.
In a population of sea otters, the frequency of the alpha allele at locus Y6 is 0.8. If the population has 400 individuals, what is the expected number of alpha alleles in that population?
a. 320
b. 400
c. 480
d. 640
e. 800
Answers
the expected number of alpha alleles in that population is 320. Therefore option A is correct.
To calculate the expected number of alpha alleles in the population, we multiply the frequency of the alpha allele by the total number of individuals in the population.
Given that the frequency of the alpha allele at locus Y6 is 0.8 and the population size is 400 individuals, we can calculate the expected number of alpha alleles as follows:
Expected number of alpha alleles = Frequency of alpha allele * Population size
Expected number of alpha alleles = 0.8 * 400
Expected number of alpha alleles = 320
Therefore, the expected number of alpha alleles in the population is 320.
Thus, the correct answer is 320.
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What do different environments cause different species to do?.
Answers
Answer:
Each organism lives in different environments to enable it to survive. All animals from different species have different traits that helps them survive in their environment. And because some animals have many variations of traits in their gene pool it can help them adapt to the changes in their environment.
Use the results of Demetri's experiment to explain why the color changed on some test strips but not others.
Answers
Answer:
It did this because some of the soultions didnt have glucose.
Explanation:
Which answer is not a mechanism for evolution?
Answers
Random mutation is not an mechanism of evolution .
Five important factors for evolution mechanism are Natural Selection, genetic drift, gene flow, mutations, and non random mating. Through these process members of a population differs greatly in their traits.
Natural selection is the most important mechanism of evolution, other evolutionary mechanisms can also change the frequencies of traits in populations. These include mutation, genetic drift and migration. Natural selection have 5 basic and major components These are Variation (individual have variation in appearance and behavior ), Inheritance( traits are continuously passed on from parent to offspring), Selection, Time and Adaptation.
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Which of the following is true of the diffuse modulatory systems of the brain?
A. Neurons arise from all parts of the brain except from the brain stem.
B. Each system originates with a large set of neurons.
C. Each neuron influences many others, contacting more than 100,000 postsynaptic neurons.
D. Neurons release transmitter only into the synaptic cleft.
Answers
The true statement about the diffuse modulatory systems of the brain is that each system originates with a large set of neurons.
Diffuse modulatory systems in the brain, such as the noradrenergic, serotonergic, dopaminergic, and cholinergic systems, are characterized by the widespread projection of neurons that originate from specific nuclei or regions. These systems have extensive axonal projections that innervate multiple brain regions, allowing for broad modulation of neural activity. Therefore, Option B is correct.
Option A is incorrect because neurons from the brain stem, such as the locus coeruleus and raphe nuclei, are key sources of neurons for the diffuse modulatory systems. Option C is incorrect because while diffuse modulatory neurons can have widespread influence, the claim that each neuron influences more than 100,000 postsynaptic neurons is an overgeneralization. Option D is incorrect because diffuse modulatory neurons often release transmitters not only into the synaptic cleft but also into the extracellular space, affecting a broader range of neurons through volume transmission.
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