"What if speciation occurred in humans?" Your essay should give a clear and precise example of speciation.
A student is asked to write an essay over the hypothetic prompt above. While brainstorming, the student came up with
four different ideas for their essay. Which idea is BEST aligned with the writing prompt and instructions?

"What If Speciation Occurred In Humans?" Your Essay Should Give A Clear And Precise Example Of Speciation.A

Answers

Answer 1

The term speciation refers to the process by which two or more different species are produced from a single original population by different speciation mechanisms. Speciation occurs in three main steps: separation of the original population, divergence (trophic divergence, reproductive divergence, genetic divergence, etcetera), and isolation.

The most related option to speciation is  B. Two populations of humans living on separate sides of the ocean. After a catastrophic event, travel across the ocean is not possible. After millions of years of separation, the two groups are no longer able to produce viable offspring together, but can still produce within their isolated groups.

Speciation occurs when the original population is divided into two groups.  They inhabit different places and are exposed to varying environmental conditions. With time, each group experience many genetic changes. These mutations depend on each group´s environment and its ecological pressures, and they accumulate in time. Pressures act on individuals and make them adapt to the new environmental conditions. Generation after generation, the genotype of individuals will increase the fitness to survive and reproduce. Fixation of mutations will increase the difference between the two groups, up to the diverging point into two new species. Even is they get together again, these species will not be able to mate and produce offspring, and if they do, the new generations will not be viable or fertile.

The exposed case of two human population living on different sides of the ocean, is an example of allopatric speciation.

Allopatric speciation refers to the geographic separation of a continuous genetic background, originating two or more new geographically isolated groups. During these events of speciation, emerging new barriers impede genetic flow between groups, as the two new populations that are separated can not get together and mate anymore. These barriers might be geographical or ecological.  

Different stages are involved in the allopatric speciation process:

• The emergence of the barrier.  

Interruption in the genetic flow

Slow and gradual differentiation due to the occurrence of mutations in each population and their accumulation in time.  

Genetic divergence by natural selection and reproductive isolation,  impeding the two groups to mate even if the barrier disappears.  

Prezigotic isolation mechanisms favored by selection a secondary contact between the new species occurs.

Related link  https://brainly.com/question/23595840referrer=searchResults

Answer 2

Answer:b

Explanation:

usatestprep


Related Questions

laws of thermodynamics

Answers

Answer:

The Zeroth Law of Thermodynamics states that if two systems are in thermodynamic equilibrium with a third system, the two original systems are in thermal equilibrium with each other. The Second Law of Thermodynamics states that the state of entropy of the entire universe, as an isolated system, will always increase over time. The First Law of Thermodynamics states that energy can be converted from one form to another with the interaction of heat, work and internal energy, but it cannot be created nor destroyed, under any circumstances. The 3rd law of thermodynamics will essentially allow us to quantify the absolute amplitude of entropies.

People with one copy of the allele that causes sickle cell anemia are called _______, while people with two copies of the allele have the disease.

Answers

Answer:

dominance

Explanation:

answer for pf

use numbers to arrange the events of a demographic transition in order in which they occur

is this correct?​

Answers

the order is 1,4,2 then 3.

(DTM) is defined by a country's death rate dropping quickly while its birth rate staying high. Because of this, a nation in Stage 2 will show an increase in its general population—not because the birth rate is rising, but because births outnumber deaths.

What are the different events of a demographic transition?

The demographic transition model was initially proposed in 1929 by demographer Warren Thompson. The four stages of the paradigm are pre-industrial, urbanizing and industrializing, mature and post-industrial.

Stage 1: Slow population growth is caused by high birth and mortality rates. Stage 2: While the birth rate stays high and the death rate declines, population growth accelerates. Stage 3: Population growth slows as the birth rate starts to decline.

Therefore,  1,4,2 and 3. It is correct events of a demographic transition in the order in which they occur.

Learn more about demographic transition here:

https://brainly.com/question/13146758

#SPJ2

The negative effect humans have on the stability of the environment is mostly directly linked to an increase in

Answers

Explanation:

Machinery as an energy unit for agricultural work produces a negative impact on the environment on soils, waters and the atmosphere. ... In the exploitation process it exerts impacts such as: soil degradation, water pollution and pollution of the atmosphere.

Explain why stem cell research is a controversial subject. What are some of the sources for stem cells?

Answers

Answer:

Stem cell research is a controversial subject because they are human embryonic stem cell (hESC), and obtaining stem cells involves the destruction of human embryos

Explanation:

The inner cell mass of a 5 to 7-day-old blastocyst can be used to generate pluripotent stem cell lines. Human embryonic stem cell investigation, on the other hand, is morally and politically fraught since it encompasses the killing of human embryos.

What are stem cells?

Stem cells are the primary raw material of the body, the cells that give rise to every other cells with specialized functions.

Under the right circumstances, stem cells differentiate to form the most cells known as daughter cells in the body or in a research lab.

Stem cells are mostly found in bone marrow. This is how they divide in order to produce new blood cells.

Once mature, blood cells end up leaving the bone marrow and reach the bloodstream. A small number of immature stem cells enter the bloodstream.

Bone Marrow has long been thought to be the best source of stem cells.

Previously, if a patient required a stem cell transplant but didn't have access to umbilical cord blood stem cells, they earned a bone marrow transplant.

Thus, this is the reason to have stem cell research as a controversial subject.

For more details regarding stem cells, visit:

https://brainly.com/question/11161299

#SPJ5

by which large pieces of food are cut and crushed into
smaller pieces is called
a. emulsification b. chemical digestion
c. absorption de mechanical d
5. The tube that connects the mouth to the stomach is the
a. esophagus. b.epiglottis
c. peristalsis. d. pancreas.
5. The hard, outer coating of the tooth is called
a, a molar.
b. enamel.
c. an enzyme. d. dentin
- The building blocks of proteins are
a. enzymes. b. minerals,
c. amino acids, d. molecules
5. Which of the following vitamins is made by the body?
a. vitamin D- b. vitamin A c. vitamin C d. vitamin B
. Having too little of the mineral iron can cause
a. rickets.
b. goiter.
c. anemia d. beriberi.
The wavelike motion that moves food through the digestive tract is called
a. emulsification b. digestion. c. oxidation d. peristalsis.
. The enzyme that digests proteins is called
a. gastric juice. b. pepsin. c. chyme. d. lipase.
Food leaves the stomach in a thick, liquid form called
a. chyme. b. bile с. pepsin.
d. saliva
The movement of food molecules from the digestive system to the blood is called
a. emulsification. b. chemical digestion. c. absorption d. peristalsis.
Gastric juice contains all of the following except
a. hydrochloric acid
b. mucus c. pepsin
d. bile
The process by which large food molecules are broken down into smaller food
molecules is
a. chemical digestion. b. oxidation c. mechanical digestion d. absorption
d. mouth
Fats are digested in the
a. large intestine b. small intestine. c. stomach.
Poor nutrition caused by an unbalanced diet is called
a. rickets. b. anemia. c. malnutrition
d. goiter.
The fingerlike projections on the lining of the small intestine are called
h cilia
d. villi.
c. bile

Answers

Answer:

by which large pieces of food are cut and crushed into

by which large pieces of food are cut and crushed intosmaller pieces is called:

d. mechanical digestion

5. The tube that connects the mouth to the stomach is the:

a. oesophagus

5. The hard, outer coating of the tooth is called:

b. enamel

- The building blocks of proteins are:

c. amino acids

5. Which of the following vitamins is made by the body?

a. vitamin D- b. vitamin A c. vitamin C

. Having too little of the mineral iron can cause:

b. goitre

The wavelike motion that moves food through the digestive tract is called:

d. peristalsis

Gastric juice contains all of the following except:

d. bile

The process by which large food molecules are broken down into smaller food

The process by which large food molecules are broken down into smaller foodmolecules is:

c. mechanical digestion

Fats are digested in the:

b. small intestine

Poor nutrition caused by an unbalanced diet is called:

c. malnutrition

The fingerlike projections on the lining of the small intestine are called:

b. villi

[tex].[/tex]

Answer:

d. mechanical digestion

a. esophagus

b. enamel

c. amino acids

a. vitamin D

c. anemia

d. peristalsis

b. pepsin

a. chyme

c. absorption

b. mucus

a. chemical digestion

b. small intestine

c. malnutrition

b. villi

Not 100% sure on some of these but very positive on most of them :) Hope this helps.

Explanation:

How you complete this

Answers

Answer:

Hi. Can you type the question, it's a bit confused reading it like this thank you!.

Which of the following is not a possible source of energy for chemosynthetic organisms?
a. oil
b. hydrogen sulfide
c. methane
d. water
Please select the best answer from the choices provided
B
Ο Ο Ο Ο
D

Answers

Answer:

The answer is a. Oil.

Explanation:

Oil is not a possible source of energy for chemosynthetic organisms.

Answer:

water on edge

Explanation:

what is tissue A called? ​

Answers

Answer:

Tissue is a group of cells that have similar structure and that function together as a unit. A nonliving material, called the intercellular matrix, fills the spaces between the cells. ... There are four main tissue types in the body: epithelial, connective, muscle, and nervous

Does anyone know the answer for 1?

Answers

The correct answer of question number 1 is D. Sill

READING TOOL Sequence of Events List in order the parts of a typical experiment that uses
scientific methodology. Use the headings in your text as a guide.

Answers

Answer:

2. Background research

3.Create a hypothesis

4.Experiment to test the hypothesis

5.Analyse the data from the experiemnt

Explanation:

2. Learn about the topic and research on what you need for the experiment.

3.Form a hypothesis in which you want to be tested.

4. Do an experiment in which it tests your hypothesis.

5. Analyst the data from the experiment and draw conclusions and decide whether it tests your theory.

blood flows through many small tubes if the dialyser. what is the significance of this​

Answers

Answer:

Blood flows through smaller tubes to mimic the actual rate of blood flow in the body. This makes the dialysis machne safe for the body. Th dialysis machine can also adjust pressure in accordance of a persons blood pressure

Explanation:

what is area? pls answer my question!​

Answers

Here is your answer

Area is a measure of how much space there on a flat surface.

Communication between neurons occurs from contact between the two neurons. when the intensity of the action potential increases past a threshold. when action potentials trigger the release of neurotransmitters. because of the all-or-none response. through the selective permeability of the axon.

Answers

Answer:

The correct answer is - when action potentials trigger the release of neurotransmitters.

Explanation:

Communication between neurons takes place by signaling that can be either chemical signaling or electrical signals. Communication between neurons occurs at very small gaps known as synapses.

These synapses have two specialized cells that help two neurons communicate by one to another to allow for chemical transmission. The chemical that isreleased due to the stimulation of the action potential in order to communicate the neurons are known as neurotransmitters that allow for transmission.

Consider the following marine community: Sea otters prey on sea urchins and therefore help maintain a healthy sea urchin population. Sea urchins prey on kelp. By helping to maintain viable sea urchin populations, the sea otters are also allowing enough kelp to grow and act as a habitat for other organisms. Suppose that a bacterial infection swept across a sea otter population and killed most sea otters before they could reproduce. How would the marine community be affected

Answers

Answer:

There will be a larger sea urchin population and less kelp. Having less kelp will result in habitat loss for other organisms.

Explanation:

The sea otters preyed on the sea urchin, and the sea urchin preyed on the kelp. When the sea otter population whipped, there was no other organism to prey on the sea urchin. This leads to a larger population of sea urchins, and now since this happened, there will be less kelp because the population of sea urchins has increased, and that's what they feed on. With less kelp, there will not be a habitat for other organisms.

how does the energy of the reactants and products differ between an energy absorbing reaction and an energy releasing reaction

Answers

In an energy absorbing reaction, the energy of the products is greater than the energy of the reactants. In an energy releasing reaction, the energy of the reactants is greater than the energy of the products.

The mass of the products is larger than the concentration of the reactants in an energy absorption process.

The power of the reaction mixture is larger than the radiation of the outputs in an energy-releasing process.

As substances disrupt bonds, energy released, and then when outputs make new bonds, release energy

Exothermic processes release energy, whereas endothermic reactions consume it. There is no general change in the quantity of energy throughout a chemical process, whether it collects or releases it.

Learn more:

https://brainly.com/question/13440632?referrer=searchResults

What are the phases of a scientific method?

Answers

Answer:

Ask a Question

Do Background Research

Construct a Hypothesis

Analyze Your Data and Draw a Conclusion

Communicate Your Results

Explanation:

Name the following.

(a) Tissue that forms the inner lining of our mouth.

(b) Tissue that connects muscle to bone in humans.

(c) Tissue that transports food in plants.

(d) Tissue that stores fat in our body.

(e) Connective tissue with a fluid matrix.

(f) Tissue present in the brain​

Answers

a) epithelial tissue
b) tendon
c) phloem
d) adipose tissue
e) blood
f) gray matter and white matter.

Describe how genetic engineering can improve human health.

Answers

Answer:

Genetic engineering is the change of a combination of genes. It can change how someone can look or discover a deathly disease that they can change into something not so deathly. If a family has a history of cancer, scientists can alter it to make it less easy to get.

Hope this helped.

Last electron level that has an electron in it.
Group of answer choices

Valence Level (Shell or Cloud)

Atom

Electrons

Atomic Symbol

Answers

Valence level (shell or cloud)

Complete the following.
1. Waste containing dangerous chemicals is ...... waste.
2. Vegetable and fruit peels and food left over comprise ... waste.
3. Hospital waste is highly ......
4. Plastic is nonbiodegradable, as it does not
5. The method of adding earthworms to compost pits is called ...​

Answers

1) Waste that contains both hazardous chemicals and radioactive wastes (generally those in the LLW category) is termed 'mixed waste

2) Vegetable and fruit peels and food left over comprise biodegradable waste.Plastic is non-biodegradable, as it does not decompose

3) Hospital waste is the second most hazardous waste after radioactive waste. The improper management of hospital wastes causes serious environmental problems in terms of air, water and land pollution

4) most plastics are non-biodegradable mainly because plastic is widely used because of its low cost, versatility and durability

5) Vermicompost (vermi-compost) is the product of the decomposition process using various species of worms, usually red wigglers, white worms, and other earthworms, to create a mixture of decomposing vegetable or food waste, bedding materials, and vermicast

hope it's helpful to you

What does seafloor spreading mean

Answers

Answer:

The formation of fresh areas of oceanic crust which occurs through the upwelling of magma at mid-ocean ridges and its subsequent outward movement on either side.

Please help me...will give braniliest

Answers

The answer is segment Segment
Segmented


Hope it helps…Good luck..Stay safe and healthy…thanks….<3333

What is a likely consequence of continued human population growth? A. More rain forests B. Fewer urban centers Ο Ο Ο Ο O C. Less pollution D. Depleted natural resources​

Answers

Answer:

D. Depleted natural resources​

Explanation:

If the human population on Earth continues to grow, depletion of natural resources is a very likely consequence.

Especially at the rapid rate that humans consume natural resources, continued population growth would eventually deplete them.

Fossil fuels are an example of natural resources that will eventually deplete, as humans use immense amounts of things like coal and natural gas.

Answer choices A, B, and C are incorrect because they would be consequences of decreased human population growth.

So, the correct answer is D. Depleted natural resources.

Polymers are formed via dehydration reactions by molecules. Which of the following best describes a dehydration reaction?

Assembling molecules in either carbonyl or carboxyl functional groups
Assembling molecules in either hydroxyl or carboxyl functional groups
Dissembling molecules in carboxyl functional groups
Dissembling molecules in hydroxyl functional groups

Answers

The correct answer is; "Assembling molecules in either hydroxyl or carboxyl functional groups"

Polymers are formed from monomers either by condensation or by addition of monomers.

A polymer is formed by the joining of one or more monomers. This can happen in either of the following ways;

condensationaddition

Condensation polymerization involves the loss of a small molecule. When the molecule that is lost is water, we can call it dehydration. Loss of molecules does not occur in addition polymerization.

The two monomer molecules that join to yield the polymer by dehydration must have H and OH moieties in suitable positions for dehydration to occur. A typical example is assembling molecules in either hydroxyl or carboxyl functional groups.

For more about condensation polymerization, see

https://brainly.com/question/18701826

Explain osmosis using this image

Answers

Answer:

A liquid moving from an area of low concentration, to an area of high concentration through a semi-permiable membrane.

Explanation:

Hope this helps :)

Which of the following is an organic molecule?

Answers

Answer:

Methane

Explanation:

Nature Constitution most of the substances made up of organtic compounds. These compounds have carbon atoms attached with hydrogen atoms with a chemical bond (very few may not have many this bond).

PLEASE HELP ME
Show the importance of the inheritance of how steps in meiosis change chromosomes through one of these processes.

Background: Meiosis is the process used by sexually reproducing organisms and is made up of eight sub-steps or phases. During meiosis, chromosomes can be changed through crossing over and nondisjunction leading to changes in the inherited traits of offspring.

Answers

Meiosis is the process that occurs in sexually reproducing organisms in the sex cells of male and female organisms.

Variation occurs in an organism due to the process of crossing over which only occurs in meiosis in which the chromosomes between non-sister chromatids exchanged. Meiosis also causes genetic variation due to the process of recombination so in inheritance, meiosis has great importance and  impact on the shape and structure of organism.

https://brainly.com/question/24372104

Two closely related beetle species are in the same location. They exhibit reproductive isolation, and they are both diploid. Biologists are arguing about whether it is more likely that they evolved via sympatric or via allopatric speciation. What statement presents the best argument

Answers

Adaptation speciation

Starving children may die from eating many lychee fruit but children who have eaten during the day or not affected. Explain why.

Answers

Answer:

Fruits should never be eaten when one hasn't had a proper meal.

Answer:

Sooo lychee fruit is actually used for Digestion.AKA best to digest food

Explanation:

so if the children that are starving eat those fruit ..what they be digesting with thier empty stomach

thus led to death or smt

hope it'll help :)

Other Questions
Question 5 of 10Which statement describes the law of conservation of energy?A. When an energy transformation happens, no energy is destroyedor created.B. There is only one form of energy.C. Energy can only change from nuclear energy to chemical energy.D. The total energy in a system can only increase. how many syllables does vacate have? Is -6/11 a irrational number? The count in a bacteria culture was 900 after 15 minutes and 1100 after 35 minutes. Assuming the count grows exponentially,What was the initial size of the culture? Help me plz will mark brainliest Solve for theta Please answer both parts What is an expression involving division that is equivalent to the expression below?2/9 x 3/4 an athlete had lifts a load with a mass of 150kg.1) calculate the gravitational potential energy gained2) if the mass of the load is increased to 200kg, calculate the gravitational potential energy gained by the load.3) based on answers in 1&2, state the relationship between the mass of the load and the gravitational potential energy. Multiply and simplify the following complex numbers (-4-5i)(1-i) Density of an object can be found by calculating mass divided by volume. If two objects have the same mass, but one has a greater volume, the object with more volume is less dense. Does waters density change when it is frozen? Mention the different determinants of population Change. Please help me solving this problem. Find the difference and simplify your answer correctly7/12-2/5 If anyone can help me I will really appreciate!! Rewrite 3.16 as a fraction (the 6 is repeating)c Help me out please i need this Which is NOT a characteristic of an oral tradition? A. To entertain an audience. B. To instigate war Between tribes. C. To preserve a cultures history. Which early river valley civilization is marked by the letter A onthe map? Charlene is a salesperson. Let y represent her total pay (in dollars). Let x represent the number ofitems she sells. Suppose that x and y are related by the equation y=32x + 1900.What is Charlene's total pay if she doesn't sell any items?A. $32B. $1,900C. $3,200D. $19 Question 14 (Essay Worth 10 points) (03.05 MC) Use complete sentences to differentiate between acids and bases on the basis of touch. Give an example of each type.