A model of evolution is shown here. The original population has alleles for type A blood (red) and alleles for type B blood (blue).Which statements are supported by the information in the model? Please select ALL that apply.
Answers
Answer:
-Islands A and C had founding members with very different allele combinations than the original mainland population.
-The genetic diversity for islands A and C is reduced after genetic drift.
-The founder effect is a mechanism of evolution that includes a random factor that influences allele changes.
-The members of the founding population for island B are the most representative of the original population on the mainland.
Explanation:
Related Questions
What is the name of the column of neurons within the medulla that initiates neural impulses for inspiration and expiration
Answers
*
Someone is leaving feathers for Kya on a stump in a clearing. The first is a
blue heron feather, the second is a long white tail feather. The third is a
turkey feather. The turkey feather reminds her of the day she saw a flock
of turkeys peck and scratch one of their own hens to death. Which one of
the following themes is suggested by this analogy?
A. Coming to age in a time of controversy molds that person for the rest of their life.
B. Avoid judging others too severely because we are all more alike than different.
C. Treat others as you would like to be treated.
D. Being different can result in ostracism or expulsion from a community, or even
death.
Answers
A doctor examines a patient who has high blood pressure and atherosclerosis in the coronary artery. What medical condition connected to blood flow is most likely to affect this patient in the future?
A. The patient may develop headaches and confusion due to cancer in the brain caused by years of low levels of oxygen supplied to the brain.
B. The patient may develop stiff joints and chest pains from the high blood pressure applied to the muscle and joint tissues of the body.
C. The patient may show signs of confusion, weakness, and partial paralysis due to high blood pressure when the plaque dislodges and blocks blood flow to the brain.
D. The patient may suffer a heart attack because of the reduction in blood flow to the muscles due to severe plaque build-up in the coronary artery.
Explain why this is the correct answer and why the other ones are wrong:
Answers
What would you eat for the rest of your life and why
Answers
Answer:
I would eat organic food or natural food
Explanation:
Because these type of food does not contain chemicals or are not artificial or are not even genetically modified which can be not good for our health but the organic foods are the best for our health.
Describe the effect on an enzyme of an increase in environmental temperature above the optimum temperature range of the enzyme.
Answers
Answer:
In an environmental temperature above optimum temperature will cause the enyzmes to denature (deform), because when they denature the subtrate will no longer fit into the enzyme
The effect on an enzyme of an increase in environmental temperature above the optimum temperature range of the enzyme - denature the enzyme and lose the specific shape of the enzyme leads to losing its activity.
An enzyme is a substance that acts as a catalyst in living organisms, regulating the rate at which chemical reactions proceed without itself being altered in the process
Raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction.extremely high temperatures above the optimum temperature can cause an enzyme to lose its shape (denature) and stop workingThus, the effect on an enzyme of an increase in environmental temperature above the optimum temperature range of the enzyme - denature the enzyme and lose the specific shape of the enzyme leads to losing its activity.
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ow do response elements work to regulate transcription? they are binding sites for transcriptional activators in response to stimuli. they only function as a result of hormone signaling. they are specific to a certain gene and only respond to one stimulus. they are binding sites for transcriptional repressors in response to stimuli.
Answers
Response elements work to regulate transcription by binding sites for transcriptional activators in response to stimuli.
Transcription factors are often classed as "activators" or "repressors". Activators attract coactivators, which results in gene activation, whereas repressors attract corepressors, which results in transcriptional repression.
In this traditional universe, transcription factors serve just one master, implying that their ability to selectively recruit a coactivator or corepressor is an inherent function of the factor. However, it has recently become clear that transcription factors can be lured and deceived by more than one master.
The cis-regulatory element to which the factor is attached, the structure of the surrounding chromatin, and the sort of chemicals accessible in the nuclear milieu all influence this traitorous behavior. In essence, transcription factors are good politicians, adapting their function to their surroundings. This dual-function job can be performed in either a "context-dependent" or "signal-dependent" manner.
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Which type of chromosomal mutation
results in the reversal of a part of a
chromosome?
A, inversion
B. deletion
C. duplication
Answers
Answer: inversion, because I clicked on deletion and it was incorrect. I also tried duplication and it was also incorrect so please choose inversion.
Explanation:
describe how the pressure changes as the velocity of a fluid increases
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Increased velocity means the flow has more kinetic energy. That energy had to come from somewhere, so the pressure has to drop to match that energy change.
Bernoulli's principle states that for a fluid with zero viscosity, an increase in the speed of the fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy.
Hence, by decreasing the diameter of the pipe we can increase the velocity of the fluid which passes through the pipe according to the continuity equation. If velocity increases, the pressure decreases to keep the sum of potential energy, kinetic energy, and pressure constant.
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5. Overproduction of GH can lead to excess production of A. Thyroid Hormone B. Cortisol C. Calcitonin D. Insulin
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Overproduction of GH (growth hormone) can lead to the excess production of D)insulin. Growth hormone is produced by the anterior pituitary gland, which is located in the brain. GH, also known as somatotropin, stimulates the growth and reproduction of cells in humans and other animals.
GH also helps regulate body composition, muscle and bone growth, and sugar and fat metabolism. It is secreted in a pulsatile fashion throughout the day, with the highest levels occurring during the night. A variety of factors, such as exercise, stress, and sleep, can affect GH secretion. GH excess (or acromegaly) is typically caused by a tumor in the pituitary gland. When GH excess occurs in children, it causes gigantism, which is characterized by excessive growth and an abnormally large body size. In adults, GH excess leads to acromegaly, which causes enlarged hands, feet, and facial features. Excess GH can also lead to insulin resistance and diabetes.
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In the box, write your choice of a topic and the purpose for your report. use complete sentences. my topic is: the purpose of my report is:
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The report will analyze the impact of adhering to specific word limits on the quality and effectiveness of the written content.
For my report, I have chosen the topic of renewable energy sources. The purpose of my report is to explore the advantages and disadvantages of various renewable energy sources, including solar, wind, hydro, and geothermal energy. I aim to provide an overview of each energy source, examining their effectiveness, cost, and environmental impact. Additionally, I will analyze the current state of renewable energy use, including global trends and the challenges facing the adoption of these technologies. Ultimately, my report aims to provide a comprehensive overview of renewable energy sources and their potential to contribute to a sustainable future. The purpose of my report is to explore the significance of word count in various forms of written communication, such as essays, articles, and social media posts. Additionally, the report will analyze the impact of adhering to specific word limits on the quality and effectiveness of the written content.
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Which of the following shows natural selection?Select one:a.A horse's parents were racers. The fastest horses are bred to produce the fastest offspring.b.Some tuna live in the Pacific Ocean. They are fast swimmers so they are likely to survive and pass on their genes.c.Some trees produce apples for baking. Seeds from the largest apples are kept to produce the next generation of trees.d.Certain rabbits are raised for fur. Rabbits with soft fur are bred with other rabbits with soft fur. They eat grain and vegetables.
Answers
Natural selection is the process in which some organisms that show better adaptation to the environment are more likely to produce an offspring. In the case of the exercise, the answer is:
b. Some tuna live in the Pacific Ocean. They are fast, so they are likely to survive and pass on their genes.
It means that as they are better adapted to that environment due to the fact they are fast swimmers, they are likely not only to survive, but to pass their genes and produce offsprings.
how does carbon dioxide indirectly effect other speicies
Answers
Answer:
Rising CO2 levels affect a lot of plants directly by stimulating photosynthesis and reducing the loss of water (plant transpiration) by reducing the opening of the small pores in the leaves, known as 'stomata'. This triggers several more subtle, indirect effects.
Explanation:
during the process of transcription in a eukaryote
Answers
For studying of human heredity, different methods of human genetics are used; among them, there are genealogical method and twins method. What can be determined by twin study
Answers
By comparing the identical twins (monozygotic twins) and non identical twins (dizygotic twins) who shares 100% and 50% of their genetic material respectively, one can determine the relative influence of genetics in compare to the environment.
Twin studies are most valuable tools in the field of genetics which allows the researchers and scientists to know about the contribution of genetic material and environmental factors among different traits and conditions. Twin studies provides highlight to the heridity which gives the proportion of phenotypic variation concered with the genetic factors. It helps to identify the genetic contribution to complex traits such as cancer, schizophernia, personality etc.
It also helpful in estimation of shared environmental factors which includes upbringing of several variable outcomes. One can study the similarities and dissimilarites between the identical and non - identical twins and determine the roles of nature and shaping of human traits to better understand the genetics and environment.
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what technique below is often used to identify transmembrane segments of integral proteins?
Answers
The technique often used to identify transmembrane segments of integral proteins is d. hydropathy plot.
What is hydropathy plot?A hydropathy plot is a plot of the hydrophobicity of each amino acid in a protein. Hydrophobicity is a measure of how much an amino acid prefers to be in a nonpolar environment, such as the interior of a protein or a lipid bilayer. Hydrophilicity is a measure of how much an amino acid prefers to be in a polar environment, such as the surface of a protein or in water.
Transmembrane segments of integral proteins are typically composed of hydrophobic amino acids, because they need to pass through the hydrophobic lipid bilayer. Therefore, hydropathy plots can be used to identify transmembrane segments by looking for regions of the protein that are highly hydrophobic.
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Complete question:
What technique below is often used to identify transmembrane segments of integral proteins?
a. Lineweaver-Burk plot
b. Michaelis-Menten plot
c. hydrophilicity plot
d. hydropathy plot
e. titration plot
answe rir plssssessSSSSSS
Answers
the baroque orchestra was smaller than the modern orchestra.
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The baroque orchestra was smaller than the modern orchestra, featuring fewer musicians and a limited range of instruments.
In comparison to the modern orchestra, the baroque orchestra had fewer musicians and a smaller ensemble size. The baroque period, which spanned from approximately 1600 to 1750, saw the emergence of orchestras that were typically composed of fewer instruments and players.
During the baroque era, the orchestra typically consisted of string instruments such as violins, violas, cellos, and double basses. Additionally, there were usually a few woodwind instruments like flutes, oboes, and bassoons, as well as brass instruments like trumpets and horns. Percussion instruments were sparingly used.
In contrast, the modern orchestra has evolved to include a wider range of instruments and larger ensembles. It incorporates additional sections such as a larger string section, a full woodwind section, a brass section, and a more extensive percussion section. This expansion in the modern orchestra allows for greater tonal variety and dynamic range in performances.
Compared to the modern orchestra, the baroque orchestra was indeed smaller, consisting of fewer musicians and a more limited range of instruments. The growth and development of the orchestra over time have contributed to the diverse and expansive orchestral compositions and performances we experience today.
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In the process of biological evolution, new species may evolve through exchange of genes from one species to another. this process is called:_______
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The process of biological evolution in which new species evolve through the exchange of genes from one species to another is called "horizontal gene transfer."
Horizontal gene transfer (HGT), also known as lateral gene transfer, is a mechanism of genetic exchange that occurs between different species.
In this process, genetic material, such as genes or segments of DNA, is transferred horizontally from one organism to another, rather than being passed down vertically from parent to offspring.
Horizontal gene transfer can occur through various mechanisms, including transformation (uptake of DNA), transduction (transfer of genes by viruses), and conjugation (direct transfer of genetic material between bacterial cells).
Horizontal gene transfer has been observed in both prokaryotes and eukaryotes and is considered to be an important mechanism in the evolution of microbial organisms.
It allows for the acquisition of new genetic traits and can contribute to the rapid adaptation and diversification of species.
Horizontal gene transfer can introduce novel genes into a population, providing new variations upon which natural selection can act.
It has played a significant role in shaping the genomes of many organisms and has implications for the evolution of complex traits and the spread of antibiotic resistance genes, for example.
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How was Earths climate changed over time?
Answers
Answer:
Explanation:
These changes have been triggered by the changing configuration of continents and oceans, changes in the Sun's intensity, variations in the orbit of Earth, and volcanic eruptions.
ASAP
Identify the error in the following statement: “Photosynthesis is a chemical reaction that takes place in the chloroplasts of green plant cells, where light energy is used to convert glucose and water into carbon dioxide and oxygen.”
A. “glucose” and “carbon dioxide” should be switched
B. No errors
C. “water” and “oxygen” should be switched
D. “chloroplasts” should be “mitochondria”
Answers
Hope u find it
Photosynthesis is a chemical reaction that takes place in the chloroplasts of green plant cells, where light energy is used to convert carbon dioxide and water into glucose and oxygen. Option A is the right answer.
What is photosynthesis?Photosynthesis is the process by which green plants prepare their own nutrients with the help of sunlight, water, and carbon dioxide.
Photosynthesis helps plants to prepare their own food, these plans are called autographs.Photosynthesis takes place inside the protoplast.This process takes place in some other organisms other than green plants.Chlorophyll is the green pigment that is required for this process to take place.The end products that are formed in the process of photosynthesis are glucose and water.Hence Option A is the right answer.
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What are the three forces that drive (create and cause to continue) ocean currents?
Answers
Answer:
The rise and fall of the tides. Tides create a current in the oceans, which are strongest near the shore, and in bays and estuaries along the coast. ...
Wind. Winds drive currents that are at or near the ocean's surface. ...
Thermohaline circulation.
Explanation:
The three forces that drive (create and cause continuing) ocean currents are wind, water density differences, and tides.
What are ocean currents?Gravity, wind, and water density all contribute to the continuous, predictable, directed movement of seawater known as ocean currents. Water in the ocean can move both horizontally and vertically. Horizontal movements are referred to as currents, while vertical changes are called upwellings or dwellings.
The three main water flows in oceans are waves, tides, and ocean currents. Waves are produced by the wind's effect on the ocean's surface. The temperature difference between the warmer equator and the cooler poles causes ocean currents.
Therefore, the three factors of wind, water density variations, and tides are what drive (make, generate, and sustain) ocean currents.
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Individual "A" produces 10 offspring, 8 of whom survive to adulthood. Individual "B" (a member of the same population) produces 15 offspring, 7 which survive to adulthood. Based on the concept of natural selection, individual "A" has the higher fitness.a) trueb) false
Answers
In natural selection when more offspring is survived is a sign of higher fitness of the particular population, hence given statement is true.
What is natural selection?Most qualities are inherited, there are more children generated than can survive, and offspring with more advantageous features will survive and have more offspring than those with less advantageous traits leading to the inevitable process of natural selection.
Since there are only so many resources available, more creatures are born than can live those who are better at obtaining food.
Mating or evading predators will have a higher chance of thriving, procreating, and passing on their DNA.
Therefore an individual in the population has offspring to survive more in number.
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if you could enlarge one atom to make it the size of a football field, it would be made mostly of?
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If you could enlarge one atom to the size of a football field, it would be made mostly of empty space. The central nucleus, containing protons and neutrons, would be very small compared to the entire field, while electrons would be found in specific regions around the nucleus.
If you were to enlarge an atom to the size of a football field, it would be mostly made up of empty space. In fact, an atom is about 100,000 times smaller than the width of a human hair. The nucleus, which is the central part of the atom, would be about the size of a small marble, while the electrons, which orbit the nucleus, would be too small to see. Despite its small size, the behavior of atoms is what governs the properties of matter and is fundamental to understanding chemistry and physics. However, the vast majority of the enlarged atom's area would still consist of empty space, emphasizing the relatively large distances between subatomic particles within an atom.
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One common hazard during a heat wave is too much sun
exposure.
Which two actions should you take to protect yourself from sun exposure?
A. Limit physical activity
B. Wear protective clothing
✓ C. Stay indoors between 10 a.m. and Dp.m.
D. Conserve water
Answers
Answer:
C & B.
Explanation:
Calculate the percentage loss of mass between the sucrose solutions 0.1 mol/dm3and 0.5 mol/dm3. Give your answer to three significant figures
Answers
Answer:
The percentage loss in mass between sucrose solutions 0.5 mol/dm³ and 0.1 mol/dm³ is 80.0% loss in mass
Explanation:
The molecular formula of sucrose is C₁₂H₂₂O₁₁
The molecular mass of sucrose is 342.3 g/mol
Therefore;
The mass of sucrose in 0.1 mol/dm³ solution = 0.1 × 342.3 = 34.23 g
The mass of sucrose in 0.5 mol/dm³ solution = 0.5 × 342.3 = 171.5 g
The percentage loss in mass of the sucrose is given as follows;
\(Percentage \ loss \ in \ mass = \dfrac{Original \ mass - New \ mass}{Original \ mass } \times 100\)
Therefore;
\(Percentage \ loss \ in \ mass = \dfrac{171.5 - 34.23}{171.5} \times 100 = 80.04 \%\)
Which gives, the percentage loss in mass between sucrose solutions 0.1 mol/dm³ and 0.5 mol/dm³ is 80.0% to three significant figures.
Which of the following contributes to the diversity of an ecosystem?
Increased keystone species
Reduced species richness
Increased invasive species
Increased foundation species
Answers
Answer:
Increased foundation species
Explanation:
Biodiversity refers to the variation in the species of organisms present in a particular ecosystem. It refers to the number of the different kinds of living organisms existing in that ecosystem. One way to contribute to how diverse an ecosystem is i.e. how rich in biological species are in that ecosystem, is an INCREASED THE FOUNDATION SPECIES.
Foundation species are species of organisms that are involved in the building of a community's structure. The role of foundation species encourage the inhabitance of other living species, hence, contributing to diversity.
HELPPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!! All of the following cause mechanical weathering EXCEPT ____. a. ice c. burrowing animals b. tree roots d. carbonic acid
Answers
Explanation:
c. burrowing animals is the answer
If the sequence of bases on the mRNA codon is AUU, what would be the sequence of bases on the opposite strand assembled by the tRNA?
Answers
Answer:
UAA
Explanation:
Uracil which replaces Thymine in RNA binds with adenine
rank the following amines according to nucleophilic strength from least nucleophilic to most nucleophilic.
Answers
To rank the following amines according to nucleophilic strength from least nucleophilic to most nucleophilic, we first need to understand what nucleophilicity is.Nucleophilicity refers to the ability of a molecule or ion to act as a nucleophile in a chemical reaction, which is characterized by its affinity for positively charged ions or atoms such as hydrogen or carbon.
Nucleophilic strength increases with the electronegativity of the atom or molecule, the size of the molecule, and the number of electrons available for bonding to an electrophile.Therefore, the following amines can be ranked according to their nucleophilic strength from least nucleophilic to most nucleophilic:Trimethylamine (CH3)3N Diethylamine (C2H5)2NH Ethylamine CH3CH2NH2Aniline C6H5NH2The reason is that the methyl group in trimethylamine and ethyl group in diethylamine act as electron-donating groups, making the lone pair of electrons on the nitrogen atom less available for bonding with electrophiles.On the other hand, the aniline group has an electron-withdrawing group, making the nitrogen atom more available for bonding with electrophiles.Therefore, the rank of the following amines according to nucleophilic strength is:Trimethylamine (CH3)3N < Diethylamine (C2H5)2NH < Ethylamine CH3CH2NH2 < Aniline C6H5NH2.
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Can someone PLEASE help me re phrase my answer? [Ill give brainliest]
Question: In the Northern Hemisphere, climate scientists observe seasonal changes in carbon dioxide concentration with the highest levels measured in May and the lowest levels measured in October. Hypothesize how photosynthesis can affect these changes. Explain your answer in three to five sentences.
answer: Photosynthesis is greatly responsible for the fluctuation of carbon dioxide concentration in the atmosphere because photosynthesis is the process where carbon dioxide gas is used in large amount. If the vegetation occurs higher in the season, decrease will occur in the carbon dioxide concentration of the atmosphere while on the other hand, if the less vegetation occur then there is higher amount of carbon dioxide concentration in the atmosphere.
Answers
Answer:
Photosynthesis is a process in which carbon dioxide gas is used in copious amounts, thus being greatly responsible for carbon dioxide concentration in the atmosphere. If there is more vegetation in a season, the concentration of carbon dioxide will decrease, while if there is less vegetation in a season, the concentration of carbon dioxide will increase
Explanation:
The process of the formation of food by trapping the sunlight with the help of chloroplast is called photosynthesis.
These are the following which are used in process photosynthesis:-
Carbon dioxideWaterSunlightPhotosynthesis is greatly dependent on the amount of carbon dioxide concentration in the atmosphere because photosynthesis is the process where carbon dioxide gas is used in large amounts.
If the vegetation occurs higher in the season, the decrease will occur in the carbon dioxide concentration of the atmosphere while on the other hand, if less vegetation occurs then there is a higher amount of carbon dioxide concentration in the atmosphere.
Hence, the larger the amount of carbon dioxide more the yield from photosynthesis. In some cases, the high amount of carbon dioxide also acts as a poison.
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