Which mechanism(s) are responsible for introducing new alleles into a population's gene pool?
A) gene flow
B) emigration
C) niche shift
D) natural selection

Answers

Answer 1

Answer: The right answer is -

A) Gene flow

Explanation:

Gene flow is a process of gene migration or the transfer of gene variant (also called allele, which is responsible for genetic variation in population) from one population to another population.

As a consequence of gene migration, new alleles are introduced or added in the already existing population, thereby increasing genetic diversity.

Thus, option A) is the right answer.


Related Questions

A medical term that means puncture pleura to withdraw fluid is ____________.________________ ____________________

Answers

The answer is pleurocentesis.


The brainest answer would be appreciated. 

Final answer:

The medical term for puncturing the pleura to withdraw fluid is thoracentesis, a procedure performed to alleviate symptoms and analyze the cause of a pleural effusion.

Explanation:

The medical term that means puncture of the pleura to withdraw fluid is thoracentesis. This procedure is used when there is an accumulation of excess fluid in the pleural space, a condition known as a pleural effusion, which can interfere with normal breathing. Conducting a thoracentesis involves inserting a needle into the pleural space, often using ultrasound guidance, to remove fluid for both therapeutic relief and diagnostic analysis.

The pleural space normally contains a small amount of fluid which serves as lubrication, allowing the lungs to move smoothly against the thoracic wall during breathing. However, when this balance is disrupted by inflammation, infection, trauma, or other medical conditions, it can lead to pleurisy or other complications such as spontaneous pneumothorax (collapsed lung), which requires prompt medical attention.

Some things are difficult for science to observe so ______ are built in order to study these phenomena.

Answers

It might be Microscopes, but Im not for sure. Microscopes are used to observe things that can't be seen with the naked eye and usually make it easier to observe a natural phenomena.

Answer:

They use models

Explanation:

Some things are to big for the nake eye can see such as a human so make a smaler MODEL of it

Antimicrobial agents that damage the viral envelope __________.

Answers

Antimicrobial agents that damage the viral envelope prevent attachment of the virus to its target cell. Viral envelopes allow the viruses to attach to cells so that they can replicate. Some viruses have viral envelopes covering their protective protein capsids. The envelope are typically derived from portions of the host cell membranes, but include some viral glycoproteins. They may help viruses avoid the host immune system. 
Final answer:

Antimicrobial agents that damage the viral envelope effectively inhibit viral growth without harming the host by disrupting the virus's ability to attach to and enter host cells.

Explanation:

Antimicrobial agents that damage the viral envelope are effective in inhibiting viral growth without damaging the host. These agents interfere with the integrity of the viral envelope, which is composed of lipids and proteins. By disrupting the envelope, the agents prevent the virus from attaching to and entering host cells, thereby inhibiting viral replication. One example of an antimicrobial agent that damages the viral envelope is Tamiflu, which inhibits the viral enzyme neuraminidase found in the influenza viral envelope.

Learn more about Antimicrobial agents that damage the viral envelope here:

https://brainly.com/question/9081938

#SPJ12

the weather map shows some conditions in the atmosphere at noon on a particular day. Where would you predict rainy weather
a. Around the great lakes
B. Throughout Caalifornia
C. In the northwest
D. all across texas

Answers

The rainy weather would be predicted around the great lakes. Thus, the correct option is A.

What is Rainy weather?

Rainy weather may be defined as the weather of a particular location that is characterized by moderate to heavy rainfall.

The location or regions present around the water bodies such as lakes, seas, rivers, etc. undergoes the rainy weather forecastly suddenly by just alterations in the wind flow.

Therefore, the correct option is A.

To learn more about Rainy weather, refer to the link:

https://brainly.com/question/1783904

#SPJ5

Answer:

somewhere around greatlakes

Explanation:

the fronts show that

n the 1960s, new evidence helped support the theory of continental drift and change it into the theory of plate tectonics. What was this new evidence?

Answers

the new evidence that was found were the borders between the tectonic plates.

(Will Upgrade "AGAIN")

Sound travels faster in a

solid

liquid

gas

vacuum

Answers

sound travels faster in solid

Stem cells that will form b cells or nk cells are found only in the

Answers

Stem cells develop into different types of cells as an organism grows. They also act as internal repair systems. They divide without limit so as to replenish other types of cells as long as the concerned organism is still alive. Stem cells that develop to form either B cells or NK cells are normally found in the bone marrow.

How might mendel's conclusions have differed if he had studied two traits determined by alleles carried on the same chromosome?

Answers

He would not have seen segregation of alleles and so would not have Mendel's Law of Segregation.
A dihybrid cross would give in the F2 a ratio of 3:1 instead of 9:3:3:1.(assuming no crossing over)

If Mendel had studied two traits determined by alleles carried on the same chromosome, then he would not have observed independent assortment.

What is Mendel's law of independent assortment?

According to Mendel's law of independent assortment, The zygote inherits distinct features from several alleles independently of one another.

Mendelian dihybrid crosses are an excellent illustration of autonomous assortment. Round green and wrinkled yellow are two novel pairings that indicate the genes responsible for seed color and shape are independently sorted. He observed nine plants with round yellow, round green, wrinkled yellow, and wrinkled green seeds in the 9:3:3:1 ratio in the F2 generation.

Therefore, Mendel would not have observed independent assortment, if he had studied two traits determined by alleles present on the same chromosome.

Learn more about Mendel's law of independent assortment, here:

https://brainly.com/question/3405533

#SPJ5

187 to achieve the maximum benefit for the heart when​ exercising, the heart rate​ (in beats per​ minute) should be in the target heart rate zone. the lower limit of this zone is found by taking​ 70% of the difference between 220 and the age of the person. the upper limit is found by using​ 85% of the difference. complete parts a through

Answers

Answer:g

Explanation:

For gorilla my guy

The oceans absorb carbon through three processes that draw atmospheric carbon dioxide into the oceans: the physical carbon pump, the biological carbon pump and the carbonate pump. Molecules of CO2 enter the ocean by diffusing into the sea surface waters and dissolving as part of the physical carbon pump. All BUT ONE variable influences how much CO2 will diffuse in any given location. That is A) wind. B) salinity. C) water temperature. D) geographic location.

Answers

Answer:B

Explanation:

bbbbBBBBBBBBBBBBBBBBBBbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

The variable that does NOT influence how much CO2 will diffuse in any given location is D) geographic location. The other three variables - wind, salinity, and water temperature - can all impact the amount of CO2 that diffuses into the sea surface waters.

For example, higher wind speeds can increase the rate of gas exchange between the atmosphere and ocean, leading to more CO2 entering the ocean. Salinity can affect the solubility of CO2 in water, and water temperature can impact the rate of biological activity that consumes or releases CO2.

The correct answer is geographic location, as this factor does not directly influence how much CO2 diffuses into the ocean. Wind, salinity, and water temperature can affect the solubility of CO2 in water and therefore impact the amount of CO2 that diffuses into the ocean in any given location.

Lear more about oceans at:

https://brainly.com/question/16237714

#SPJ2

How does studying science help you be a better member of society? (1 point)

A. Learning the biases of science will help you know what is right or wrong.
B. Understanding how science works will help you make better decisions
C. Memorizing science facts will help you become more intelligent.
D. Knowing science will help you live without the aid of technology.


PLEASE HELP !!!

Answers

Understanding how science works will help you make better decisions.

The answer to this would be B) Understanding how science works will help you make better decisions!

Increased activity of phosphodiesterase in a target cell would decrease its level of

Answers

The answer is cAMP or cyclic adenosine monophosphate. This is a derivative of ATP or adenosine triphosphate. It is a second messenger which is important in biological processes. This is used in signal transduction intracellularly, conveying the cAMP dependent pathway. This is formed from ATP through the action of the enzyme adenylate cyclase. Intracellular transduction can be used by hormones to exert its effects, regulation of ion channels, this can be used to activate protein kinases.

The nurse is admitting a client who states, "i was bit by a brown recluse spider." which observations made by the nurse would indicate the client's report is accurate?

Answers

Observations for a recluse spider bite exhibits the signs and symptoms of the ff:

- the skin is reddened, and will be followed by blisters that will be forming on the bite site. 
- in 2 to 8 hours of the bite, intense pain will be felt by the victim or the patient, and is accompanied by itching.
- a week after the bite, an ulcer or a sore (open) with necrosis (breakdown of tissues) will develop and may take up to a month to heal. 

After mars the next most likely candidates for life in the solar system are

Answers

the large moons of the jovian planets

@abhisar @Directrix @shrutipande9
Farmer Scott is one of the best farmers in town. During the middle of the corn growing season, Farmer Scott had to travel out of town for two weeks, and he left his acres of corn plants alone with no chemicals or other protection.

In terms of succession, which of these best describes what Framer Scott returned to after the two weeks?
A)
Small weeds began to grow and develop.
B)
There was no distinct change in the corn fields.
C)
All of the corn died due to a rampant corn disease.
D)
The corn mutated to form a new species of vegetable.,

Answers

You can safely rule out C and D as they are a bit ridiculous. The correct answer is A. In the middle of the growing season, there will be distinct changes, in the form of weeds popping up.

Where in the body would you find low oxygen levels causing vasoconstriction and high levels causing vasodilation?
a. liver
b. lungs
c. kidney
d. heart?

Answers

The correct answer is the lungs. Usually, in the systemic organs such as the liver, kidneys, and the heart; hypoxia or low oxygen levels cause the blood vessels supplying them to vasodilate to increase flow of blood and prevent ischemia. Adequate oxygenation of systemic organs cause the blood supply to vasoconstrict to prevent pooling of oxygenated blood and shunt it to other organs that need the oxygen more.

However, in the lungs, the opposite is true because in the setting of hypoxia, the blood vessels of the lungs vasoconstrict as to shunt the blood to other parts of the lungs with adequate oxygenation for the blood to be adequately oxygenated. If there is adequate oxygen in the lungs, then blood vessels vasodilate to efficiently get the oxygen from the lungs. 
The answer for the question is the lungs.
Vasodilation means the smooth muscles in the blood vessel walls relax causing them to widen. The widening results in less vsacular resistance, thus the blood flow through the dilated vessel increases. Vasocontsriction on the other hand means the smooth muscles in the blood vessel walls contract causing them to narrow. The action results in blood flow through the vessels to be restricted.

Nuclei of atoms that make up a newborn baby were made in the

Answers

Nuclei of atoms which make up the newborn baby were made in ancient stars.

Ancient stars exploded many years ago and this is the same nuclei where newborn babies are being made.

An enzyme that can facilitate the breakdown of amylose into smaller units is ________.

Answers

The digestive enzyme amylase helps breakdown of amylose into smaller units. Amylose is a polysaccharide carbohydrate or starch that is a thickener, water binder, emulsion stabilizer and gelling agent. Amylase on the other hand is an enzyme that you can find in saliva and pancreatic fluid. 

Which group of humans is likely to experience the most devastating symptoms of toxoplasmosis?

the elderly
pregnant women
infants
unborn babies

Answers

The answer is unborn babies.

Toxoplasmosis can have serious consequences for unborn babies during pregnancy.

Toxoplasmosis is caused by the parasite Toxoplasma gondii and can lead to severe complications, especially in certain groups. Among the options provided, unborn babies are likely to experience the most devastating symptoms of toxoplasmosis if the infection occurs during pregnancy.

Which cranial nerve is responsible for transmitting visual information?

Answers

the Optic nerve transmits visual info
Final answer:

The optic nerve is the cranial nerve responsible for transmitting visual information from the eye to the brain. It is one of the 12 cranial nerves in the human body which each have unique functions. Some cranial nerves transmit sensory information, others transmit motor information, and some a combination of both.

Explanation:

The cranial nerve responsible for transmitting visual information is the optic nerve. This nerve function includes transmitting visual signals from the eye over the axons of retinal ganglion cells, which form the optic nerve, to the brain. Specialized cells within this nerve carry various types of information such as form, movement, depth, brightness, color, and fine detail.

Humans have a total of 12 cranial nerves, each providing unique functions. For example, the olfactory nerve is responsible for transmitting information about smells from the nose to the brainstem, and the oculomotor nerve controls the opening and closing of the eyelid and some eye movements. However, when it comes to the transmission of visual information, the optic nerve is the primary player.

Generally, some cranial nerves transmit only sensory information, others mainly motor information, and some contain a mix of sensory and motor fibers, catering to the complex needs of our biological system.

Learn more about Optic nerve here:

https://brainly.com/question/36966484

#SPJ11

A student is studying the ecology of a playa lake, which forms after a rainfall in a dry lake bed. the table lists the organisms that the student observed. which level of biological organization has the student described in the table?

Answers

The level of organization the student observed is community.

There are different levels of organization in Biology, more specifically Ecology, and these levels are listed below and explained in order from the highest to the lowest level.

The biosphere, which includes the largest part of the Earth, represents all living organisms on the land, in the ocean, and in the atmosphere.

An ecosystem is the next level of organization, which is a specific area with living organisms. It includes all the living organisms in that area but also the non-living environmental aspects, so it includes both biotic and abiotic factors.

A community includes all biotic factors of a specific area, so it is the biotic part of an ecosystem. This means that a community refers to all the populations of different species that live in a specific ecosystem and interact with each other.

A population is a level below a community, and above species, which refers to all of the individual organisms of one species that live in a specific community and interact with each other.

A species is a group of organisms that live in the same area, and interact with each other to breed, to produce viable offspring. All members of a species are genetically related and can be bred to produce fertile offspring.

Since the student in the example is observing a lake, which is an ecosystem, and he listed all the living organisms he found in that lake, we can conclude that the level of organization observed in the table is community. He described different shrimp species, and an insect species, and he didn't describe any abiotic factors, so that brings us to the level of community.

While assessing an older adult during a regular health checkup, a nurse finds signs of elder abuse. which physical findings would further confirm the nurse's suspicion? select all that apply?

Answers

There are no options to select, but physical findings would vary. I assume scratches, bruises, and any red marks. Other types of abuse could be neglecting. Neglecting would include signs like not clean, unbrushed hair, dirty clothes, poor sleep hygiene, not taking meds properly, and not seeking medical attention for any medical issue.

Inputs, processes, outputs, feedback, and a goal are all involved in
a.

brainstorming.
b.

technological systems.
c.

troubleshooting.
d.

trade-offs

Answers

Inputs, processes, outputs, feedback, and a goal are all involved in...technological systems.....

The correct answer would be option B, Technological Systems.

Input, processes, outputs, feedback and goal are all involved in Technological System.

Explanation:

Technological System is a system which involves things like Input, processes, Output, feedback and goals.

Every fragment of the system has its part in running that system.

Inputs are the things that are being put in the system to achieve or get the desired output.

Processes are the procedures that take the input, govern the system according to it and run it as desired.

Output is the desired outcome from the system or machines after inputting data and having processing over it.

Feedback is to see that the system generated the desired results or not.

Goals are those desired results that need to be achieved by the Technological System.

Learn more about Systems at:

brainly.com/question/14802838

#LearnWithBrainly

Coconut milk used in tissues culture enhances cell division and plant growth. What is the active ingredient in coconut milk that causes this effect? 1. The plant hormone cytokinin 2. The plant hormone abscisic acid 3. The plant hormone ethane

Answers

The correct answer would be answer choice 1.

The correct option out of all the options that are given above is option 1 or A. the plant hormone cytokinin

Why is the largest dna fragment band found closest to the well in which it was placed?

Answers

Because of the molecular weight of DNA, the larger fragment DNA is heavier and cannot move fast through the gel and found near to well whereas the small fragments with small molecule weight can move fast through the gel pores.
Final answer:

In agarose gel electrophoresis, larger DNA fragments migrate less due to the molecular sieve effect of the gel matrix which impedes their movement. Thus, they are found closer to the well they were loaded into, while smaller fragments move farther away.

Explanation:

The largest DNA fragment band is found closest to the well in because it travels slower through the gel during agarose gel electrophoresis. During this process, DNA fragments are loaded into a gel and an electric field is applied. Due to its negative charge, DNA moves towards the positive electrode. However, the gel matrix forms a molecular sieve, impeding the movement of larger molecules, allowing smaller fragments to pass through more readily. Hence, larger DNA fragments migrate less, staying closer to the well from which they were loaded, while smaller fragments travel farther.

Learn more about Agarose Gel Electrophoresis here:

https://brainly.com/question/33515932

#SPJ6

The client has difficulty swallowing and requests the nurse to crush all the medications. the nurse notes a client prescribed an extended-release opioid requests that all medications be crushed to facilitate the administration. what information about this form of opioid presents a problem respecting the client's request?

Answers

An extended-release medication is a drug with a different mechanism of release and action. The drug is designed to be released slowly over a course of time. It would not be a problem to crush an immediate-release drug but the nurse should not crush the extended-release opioid. If the patient receives this opioid medication crushed, the entire quantity of the drug will be at once released and active in its body. This could cause overdose or severe side-effects from the high dosage. 

A skeletal muscle deprived of adequate atp supplies will _____. a skeletal muscle deprived of adequate atp supplies will _____. sequester all free calcium ions into the sarcoplasmic reticulum immediately relax enter a state where actin and myosin are unable to separate fire many more action potentials than usual and enter a state of "rigor"

Answers

A skeletal muscle deprived of adequate ATP supplies will enter a state of rigor mortis.

When a skeletal muscle is deprived of adequate ATP supplies, it enters a state known as "rigor mortis." Rigor mortis is a natural post-mortem phenomenon that occurs in the muscles of a deceased organism, typically a human body.

Here's how it happens: ATP is essential for muscle contraction and relaxation. During life, ATP is constantly produced and used to power the cross-bridge cycling between the protein filaments actin and myosin in muscle cells. This cycling allows muscles to contract and relax as needed for various movements.

However, when an organism dies, ATP production ceases, and the available ATP is depleted. Without ATP, the myosin heads that are firmly attached to actin cannot detach from it. As a result, the muscle becomes rigid and locked in a contracted state. This rigidity is what we observe as rigor mortis.

The onset of rigor mortis typically occurs a few hours after death, peaks around 12-24 hours after death, and then gradually dissipates as the muscle proteins break down due to enzymatic processes and decomposition. It's important to note that rigor mortis is a temporary condition and does not last indefinitely. The exact timing and duration of rigor mortis can vary depending on factors like temperature, pH levels, and the individual's overall health at the time of death.

For more questions on skeletal muscle

https://brainly.com/question/24655445

#SPJ6

Final answer:

If a skeletal muscle lacks adequate ATP, it enters a state of rigor where the muscle remains contracted because the actin and myosin proteins cannot separate. The muscle does not immediately relax, sequester all free calcium ions, or fire many more action potentials.

Explanation:

A skeletal muscle deprived of adequate ATP (adenosine triphosphate) supplies will enter a state known as rigor. This is because ATP is essential for muscle contraction and relaxation. Without enough ATP, the actin and myosin proteins within the skeletal muscle fibers cannot detach from each other, causing the muscle to remain in a contracted state, or rigor. Therefore, the muscle does not relax immediately or sequester all free calcium ions into the sarcoplasmic reticulum, and it does not fire many more action potentials than usual. Skeletal muscles need ATP to function correctly and carry out processes like muscle contraction and relaxation.

Learn more about ATP and Muscle Contraction here:

https://brainly.com/question/33888889

#SPJ6

Which of the following most closely models the behavior of a sunspot?
A.
a freckle
B.
an eyelash
C.
a birthmark
D.
a lip

Answers

The answer is 
A.) A Freckle

Answer: A. a freckle

Explanation: hope this helps

The number of individuals of a species in a given area is known as

Answers

Answer: population density.

Which of the following is a member of the class Polychaeta?
Clam Worms
Earthworms
Leeches
All of the above

Answers

Polychaeta generally refers to a class of annelid worms with segmented body parts.

Even though all of the answers are annelid worms, polychaetes are generally marine animals, so I would say that the answer is most likely Clam Worms.

Answer:

Clam worms

Explanation:

The polychaeta is the most primitive and largest class of the phylum Annelida.  Polychaetes are marine worms. Polychaetes have a distinct head with specialized sense organs such as eyes. These features differentiate from other annelids. This class includes the clam worm or Nereis  

Other Questions
Jason ate one third of a pizza for dinner, and his brother ate one sixth of the same pizza.What portion of the pizza was left over? "classifications of lipoproteins include: very low density lipoproteins, low density lipoproteins, high density lipoproteins and __________." hi, i have two questions i need help with.Q1. How can you organize a PowerPoint presentation so it engages the audience?A Add page numbers.B Place a lot of content on each slide.C Use a story structure with a beginning, middle, and an end.D Use a small font.Q2. Describe the steps to play a presentation the way your audience will see it.A Go to the View tab and select Editing View.B Go to the View tab and select Reading View.C Go to the View tab and select Slide Show.D Go to the View tab and select Watch. . A toy company is selling novelty soccer balls of all sizes. If one soccer ball, with a radius of 5 cm, is placed in a box with all equal dimensions, as shown below, and the ball is touching the sides of the box, approximately how much empty space is inside the box? A reflection of the pink triangle is shown. Which transformation makes this reflection?A) (x', y') = (y, x) B) (x', y') = (x, -y) C) (x', y') = (-x, y) D) (x', y') = (-x, -y) Which expression represents the prime factorization of 84? If the ratio of men to women is 3:2 and there are 120 men, how many women would there be? A manufacturer of drinking glasses ships his delicate stock in speical boxes that can hold 32 glasses. if 1714 glasses are manufactured, how many full boxes are filled? are there any glasses left over? Which statement describes the transformation of the graph of function f onto the graph of function g? What resulted from the bataan death march? more than 7,000 american and filipino troops died. macarthur was forced to retreat to corregidor island. 75,000 allied soldiers surrendered to japanese troops. japan took guam, wake island, and hong kong? After falling his friend says, Nice job, genius. This is an example of_______.ironydramatic ironysituational ironyverbal irony what does the ghost instruct hamlet to do concerning hamlet's mother In this cartoon about the 1948 election, who does the man riding the donkey represent? Solve for x: -2.3(x - 1.2) = -9.66 In which way was the issue of womens suffrage tied to industrialization?A.Women were being left at home more frequently as men went off to factories.B.Children were getting work at factories, giving women more free time to think about politics.C.Women were experiencing the same injustices as men, but with no political recourse.D.They had washing machines and other time-saving devices, giving them time to care about politics. which of the following explains why a small conflict in the balkans spread to all of europe i dont understand please helpp asapWhich is the equation for AD? This graph compares shoe sizes for a group of 80 two-year-old boys and a group of 60 three-year-old boys. Two box and whisker plots showing shoes sizes on a number line from 2.5 to 13. The upper plot represents the group of 2 year-old boys. For this upper plot, the minimum number is 3, the maximum number is 9.5, the right side of the box is 7.5, the left side of the box is 3.5, and the bar in the box is at 6. The lower plot represents the group of 3 year-old boys. For this lower plot, the minimum number is 5, the maximum number is 11.5, the right side of the box is 9.5, the left side of the box is 6.5, and the bar in the box is at 8. About how many more two-year-old boys have a shoe size of 6 or less, compared to the three-year-old boys? Which of the following was a major reason the Industrial Revolution developed in Great Britain in the 1700s?A.Immigration policiesB.Natural resourcesC.Access to imported oilD.The Transatlantic slave trade The Ming Dynasty became the ruling power in China in 1368. Between the years 1405 and 1433, the Ming government sponsored seven naval expeditions. The government placed a man named Zheng He in control of the expeditions. Which of the following best explains the result of these voyages? A. The Chinese explorers were the first to sail around the world. B. The Chinese conquered land in the Middle East and Europe. C. The voyages made China the wealthiest empire in the world. D. The voyages spread Chinese culture throughout Asia and Africa