Two species of three-spined stickleback fish have been found together in five different lakes. The larger, bottom-dwelling species feeds on large prey close to shore. A surface-dwelling species feeds on small plankton in open water. DNA analysis shows that the two species in each lake are more closely related to each other than they are to any of the other species in the lake. Which prezygotic mechanism most likely allowed divergence of an ancestral species into these present-day species

Answers

Answer 1

Answer:

The answer is "Sympatric speciation due to disruptive selection"

Explanation:

Disruptive selection is a certain type of natural choice, that aggressively favors all ends of the spectrum in a moderate community. Disruptive selection is often deduced by a phyletic prepared to change to contribute to speciation. These two species happened due to various habitats associated with extreme speciation due to various confusing choices.


Related Questions



16. Which of the following could describe a population that is decreasing
in size?
The birth rate and death rate remain the same
The death rate is becoming lower than the birth rate
The death rate is constant and the birth rate is increasing
The death rate is becoming higher than the birth rate

Answers

Answer:

The death rate is becoming higher than the birth rate.

Explanation:

Birth rate means the population increases, and death means decreases.

Answer:

The death rate becoming higher than the birth rate

Explanation:

if the death rate is becoming higher and the birth rate is getting lower then the population will die off and the birth rate would decress.

GIVING BRAINLIEST!!!!!!

name the parts of the digestive system.

Answers

Some of the major parts are
•Salivary Glands
•Pharynx
•Esophagus
•Stomach
•Small intestine
•Large intestine
•Rectum

An__ is a variation of a gene.

Answers

Answer:

Genetic variability refers to a species's genetic variation as a whole. Specific changes in DNA fragments or genes are referred to as genetic variants, and each mutation of a gene is referred to as an allele.

Explanation:

Hope this helps!

Please mark me as Brainlinieast.

In which of the following organisms did photosynthesis most likely first
evolve?
A. Algae
B. Prokaryotes
C. Plants
D. C4 plants

Answers

It’s B, since
Compared to prokaryotic organisms such as bacteria, plants and animals have a relatively recent evolutionary origin. DNA evidence suggests that the first eukaryotes evolved from prokaryotes, between 2500 and 1000 million years ago.

The following organisms did photosynthesis most likely first  evolve - B. Prokaryotes

Sufficient evidence indicates that eukaryotic photosynthesis originated from endosymbiosis of cyanobacterial-like organisms

ultimately these prokaryotes became chloroplasts in eukaryotic cells.So the evolutionary origin of photosynthesis is to be found in the bacterial domain.The geological record indicates that this transforming event took place early in Earth's history, at least 2450–2320 million years ago

Thus, The following organisms did photosynthesis most likely first  evolve - B. Prokaryotes

Learn more:

https://brainly.com/question/3529377

Scientists compare the structures of a chicken embryo and a human embryo at the same stage of development. They find that both vertebrates have similar shapes and structures, including the presence of gill slits and tails. How is this comparison of the embryos used as supporting evidence of evolution?

A. The similarities suggest that chickens and humans are the direct descendants of modern-day fish with tails and gill slits.
B. The similarities suggest that vertebrates pass through each of the adult stages of their evolutionary history as they develop.
C. The similarities suggest that vertebrates can undergo genetic changes during development that lead to the evolution of new species.
D. The similarities suggest that chickens and humans descend from ancestors with genes that code for the development of tails and gill slits.

Answers

The correct answer would be C please tell me if I am wrong

Even before the Structure of DNA was solved, studies indicated that the genetic material must have the following propties

Answers

(Key Concept C) Even before the structure of DNA was solved, studies indicated that the genetic material must have the following properties: be able to store information; • be faithfully replicated and be passed on from generation to generation; and • allow for changes, and thus evolution, to occur. Hope this helps! Mark brainly please!

Answer:

Be able to store information

Explanation:

I just have a gut feeling that this is right, so hopefully this is right, well anyway have a nice day

QUICKKKK. WILL GIVE BRAINLIST
Pls help. This is confusing.

Answers

It’s A. If the snakes were removed the mouse would have less predators so the population would INCREASE.

Briefly explain how energy is transferred from organism to organism in the food web.

Answers

Answer:

energy is transferred between trophic levels when one organism eats another and gets the energy-rich molecules from it's prey body.

Explanation:

however these transfers are inefficient,and this inefficiency limits the length of food chains

2.A cell in a hypotonic solution​

Answers

Answer:

the cell will swell

Explanation:

the cell will swell as the concentration of solute is more in the cell than its solvent thus water will move inside the cell leading the cell to swell.

in most algae, certain fungi and higher green plant, main components of cell wall is​

Answers

Answer: Eukaryotic organisms, such as algae, fungi, and higher plants, have multilayered cell walls composed in large part of either cellulose or chitin . ... Cellulose microfibrils form the scaffold of all plant cell walls. brainliest?

Explanation:

what do ducks and snake have in common.

Answers

Answer:

they both can see behind them

Explanation:

if u are good at science please help (biomass)

Answers

don’t click :) it’s a

Why do efforts to prevent all fires from occurring in forests actually tend to make these ecosystems more vulnerable to fire?

Answers

Answer:

they feed off of the efforts to control the fires on forests

Explanation:

they cause heat trapping for wildfires to grow. These patterns occurred in 1880 as a result, led multiple forest fires that were hard to control and over time increased chances of happening again.

Energy flows into the producers of an ecosystem through the process of

Decomposition

Cellular respiration

Carbon fixation

Photosynthesis

Answers

Answer:

by the process of photosynthesis

HELP PLEASE
How do ocean currents affect weather in different parts of the world?

Answers

Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface.
The currents pull cold water from different parts of the world making it in some areas that are typically warm have spots of cold water in them. Also vise versa

which diseases are caused by deficiency of vitamin c​

Answers

Answer:

scurvy is caused due to the deficiency of vitamin c

Explanation:

ʘ‿ʘ

Severe deficiency, called scurvy, causes bruising, gum and dental problems, dry hair and skin, and anemia. The diagnosis is based on symptoms and sometimes blood tests. Increasing consumption of fresh fruits and vegetables or taking vitamin C supplements by mouth usually corrects the deficiency.

Red-eyed tree frog eggs can hatch up to two days earlier than average when they detect vibrations. However, if they hatch more than two days earlier than expected due to vibrations, the embryos are typically not developed enough to survive outside of the egg. Explain how natural selection inhibited frog eggs from hatching any earlier than two days before expected hatching. Explain your answer in 1–2 sentences.

Answers

Natural selection inhibited the eggs from hatching before expected because this trait is negative in terms of survival and reproduction.

How does natural selection work?

Natural selection is a natural process that causes evolution over time. This mechanism implies only individuals with traits that represent an advantage for survival and reproduction will prevail over time, which causes the traits of these individuals to become dominant.

For example, if in a population of deer male deer with big antlers are more likely to survive and reproduce, it is expected after some generations this trait is dominant.

How does natural selection work in the red-eyed tree frog case?

In this situation, we know that if an egg hatches before time the embryo is not likely to survive. This means this trait is a disadvantage in terms of survival and reproduction, and due to this and as a result of natural selection the trait is not dominant.

Learn more about natural selection in: https://brainly.com/question/2725702

PLZ help

Fuel-cell cars use hydrogen gas and release ___ into the atmosphere

A. Oxygen gas
B. Carbon dioxide
C. Fossil Fuels
D. Water vapor

Science (A P E X)

Answers

Answer:

D. Water vapor

Hope this helps!

Answer:

D water vapors

Explanation:

Why are carrots good for the body​

Answers

Answer:

The fiber in carrots can help keep blood sugar levels under control. And they're loaded with vitamin A and beta-carotene, which there's evidence to suggest can lower your diabetes risk. They can strengthen your bones. Carrots have calcium and vitamin K, both of which are important for bone health

Explanation:

Which is not a factor that weather depends upon? Hours of daylight Air Temperature Air pressure Moisture

Answers

Answer:

Option A , Hours of daylight  does not affect the weather

Explanation:

The seven prime factors that affect the weather are

Temperature

Pressure

Moisture content

Speed and direction of air

Latitude

Ocean currents

Elevation and bodies of water.

Hence, option A , Hours of daylight  does not affect the weather

why it is important to know the speed of earthquake waves, the strength of the waves and how do we determine the location of the epicenter of an earthquake. ?

Answers

Answer: As the P and S waves travel out from an earthquake the P waves get progressively farther ahead of the S waves. Therefore, the farther a seismic recording station is from the earthquake epicenter the greater will be the difference in time of arrival between the P and S wave.

Nervous tissue would allow the signals to travel. Because of the branches between the cells in this tissue, the cells can easily send a message from one cell to another.

Answers

Answer:

glial cells

Explanation:

Match the following organelles with their specific function.
_______________________

ribosome
mitochondria
chloroplast
lysosome
endoplasmic reticulum
vacuole
Golgi Apparatus
cytoskeleton
_______________________

1. make/assemble proteins


2. packages and processes materials to send


3. an organelle composed of a network for transport in the cell


4. powerhouse/plant or make energy


5. create energy from the sun


6. cleanup


7. storage


8. support and structure

Answers

Answer:

picture po plssssssss. para masagutan

What are the two methods of fossilisation?

Answers

Answer:

Two types of fossilization: Body and Trace fossils.

Two methods of fossilization: Freezing, Drying, Petrification, Permineralization, Bacteria, and Algae.

Explanation:

The part of the brain that helps you keep from falling is the _______.

Answers

Cerebellum is part that helps us keep from falling.
The Brainstem helps to keep you from falling

what is helium plz answer , have a beautiful good morning:-).​

Answers

Answer:

Helium is a noble gas meaning that it has a full outer shell of valence electrons. It's not reactive because of this.

Explanation:

Process by which plants become fertilized without water; animals help

Answers

Animals such as bees or wind can carry pollen from one flower to another flower and fertilize the plant that way. Plants can also self-pollinate which happens when a plant’s own pollen fertilizes its own ovules.

The process of meiosis is essential in the sexual reproduction and life cycle of many organisms. The outcome of meiosis is haploid
gametes. Which statements correctly describe the importance of meiosis to the life cycle or these organisms?

Answers

Answer:

A) Increasing genetic diversity ensures that no two haploid gametes are exactly the same.

Explanation:

not sure

Answer:

A,B,C,,E

Explanation:

i did the usa test prep

Question is specific and clearly
connects the relationship
between carbon dioxide (CO)
and temperature

Answers

Answer:

The Temperature rises as carbon dioxide levels rise. The temperature decreases when the carbon dioxide concentration falls.

Explanation:

A tiny part of the correlation is attributable to the relationship between temperature and carbon dioxide solubility in the surface of the ocean, but most of it is consistent with feedback from carbon dioxide to the environment. These changes are expected to be consistent with Earth's radiative balances and the function of greenhouse gases in climate change. While determining the cause and impact, initially or by some other method, between carbon dioxide and climate, may appear straightforward, it still is extremely difficult to find the cause and effect. Other changes include altered vegetation, earth surface properties, and ice-sheet extent in the glacial climate.

Other paleoclimate representatives allow us to comprehend the role of the oceans in climate change in the past and future. The ocean holds 60 times as much carbon as the atmosphere, and the change in carbon dioxide in the atmosphere is predicted throughout the past several hundred thousand years to be compared to carbon changes in the ocean. While oceans vary far more slowly than the atmosphere, in past CO2 fluctuations the ocean has played a key role and will play a part for millennia in the future.

Finally, paleoclimate data demonstrate that there is not only temperature about climate change. In the past, many other aspects of the climate have altered as carbon dioxide has changed. The snow was lower, the continents dried and the tropical mousses weaker during the glacial ages. Some of these changes may be independent; others may be closely associated with changing carbon dioxide levels. A thoroughness of research is to understand what these changes might occur in the future and how substantial these changes may be.. The Paleoclimatology Program of the NOAA provides scientists with a documentation of previous changes as an approach to understanding future climate change.

what kind of cells perform mitoses

Answers

eukaryotic cells are the only ones that undergo mitosis, btw that link is a virus or something
Other Questions
Why did Americans living in the country in the early 1800s make or grow whatthey needed?A. Towns and cities did not have anything farmers needed.B. People were poor.O c. The government could not spend money to help them.O D. It was too difficult to travel to get goods somewhere else. Two sentences with allocate 6. Write the equation that represents the points inthe table in vertex form.The vertex of the function is (0, 2).X |. Y-2.| 6-1 |. 30. | 21. | 32. | 6 1. The total pressure of a gas mixture is 1.05 atm. The mixture contains 55% carbon dioxide, 31% nitrogen, and 14% hydrogen.What is the partial pressure of the carbon dioxide in the mixture? if i could be someone else i would be essay look at pic I need help!!!! :( Multiply 6/5 by the reciprocal of (-3/8) Who killed Marvin Gaye? Put these five words in order to make them a sentence: coral, in, live, fish, reefs Help anyone ? How many (and of what nature) roots does the function have? Two or more members of the same species living in the same habitat Find the area of a circle with a radius of 8.Either enter an exact answer in terms of or use 3.14 for T and enter your answer as a decimal. A cartographer used a scale of 1 inch:300 meters for the heights of different mountains. If the actual height of one of those mountains is 3,600 meters, what is its height on the map? the new shown represents what geometric solid ? Which of these is NOT an example of lateral surface area? A. The label of a soup can. B. Painting the walls of your bedroom. C. The paper wrapper of an ice cream cone. D. The air in a basketball. which is an example of a sale laboratory procedure 1. PART A: Which statement identifies the central idea ofthe text?What's What With the Rostra for the function f(x) = x2 + 3 what is the value of f(-4)? compare two ways in which destructive relationship influence your well-being as oppose to constructive relationship Schedule of Cash Collections of Accounts Receivable Pet Place Supplies Inc., a pet wholesale supplier, was organized on May 1. Projected sales for each of the first three months of operations are as follows: May $290,000 June 410,000 July 520,000 All sales are on account. Of sales on account, 52% are expected to be collected in the month of the sale, 44% in the month following the sale, and the remainder in the second month following the sale. Prepare a schedule indicating cash collections from sales for May, June, and July.