A biologist reads an article in a scientific journal that describes how the legs

of different organisms look and function differently, but appear to be

constructed from the same basic bones. He compares a drawing of the

skeletal structure of a porpoise's fin with one of an elephant's leg. (7A)

What aspect of the theory of evolution do these drawings support?

Answers

Answer 1

Answer:

Homology

Explanation:

The aspect of the theory of evolution that the drawings support is homology. Homologous organs are organs of different organisms that look similar in structure but perform different functions in reality.

Organs that are built on the same or similar basic plans in the same organisms but perform different functions are thought to have been from the same ancestor. Hence, homology or homologous organ represents one of the evidence used to support the theory of evolution which opines that all living organisms descended with modifications from common ancestors.


Related Questions

PLEASE HELP!!!
In the space below, discuss some of the advantages and disadvantages of asexual and sexual reproduction. Compare and contrast individuals that are sexually and asexually reproduced. Use complete, meaningful sentences to explain the information you give as your answer.

Answers

Answer:

The advantages of sexual reproduction:

produces genetic variation in the offspring

the species can adapt to new environments due to variation, which gives them a survival advantage

a disease is less likely to affect all the individuals in a population

In asexual reproduction there is only one parent. The offspring are clones of the parent and each other.

The advantages of asexual reproduction include:

the population can increase rapidly when the conditions are favourable

only one parent is needed

it is more time and energy efficient as you don't need a mate

it is faster than sexual reproduction

The disadvantages of sexual reproduction:

time and energy are needed to find a mate

it is not possible for an isolated individual to reproduce

The disadvantages of asexual reproduction include:

it does not lead to genetic variation in a population

the species may only be suited to one habitat

disease may affect all the individuals in a population

Explanation:

Okay so basically then that’s how you yeah

How do plants in the desert behave to attract pollinators?

A: They don't bloom.
B: They bloom at night.
C: They bloom day and night.
D: They bloom during the day.

Answers

Answer:

C: They bloom day and night

Hello

They bloom at night

Explanation:

I just took the K12 test

What instrument is used to measure the average kinetic energy in a substance? calorimeter thermometer spectroscope voltmeter?​

Answers

Answer:

The instrument used to measure the average kinetic energy of particles in a substance is thermometer. A measure of the average kinetic energy of particles in a substance is temperature

Explanation:

The Miller/Urey experiment showed that
A.) that the first cells released oxygen
B.) that volcanos put organic molecules into the atmosphere
C.) that the chemistry of the ancient Earth, with lightning, can form organic molecules
D.) it was possible for life to form from cyanide
I think it's D, but AM I WRONG?

Answers

Yep and the other answers are hilarious lol

explain photosynthesis in 3 stages (you may include more) you must use the following vocabulary words in your written explanation and underline them:chloroplasts chlorophyll stomata oxygen carbon dioxide raw material, products, glucose) sure to Define and state carbon dioxide role in the process and explain oxygen and why it's a byproduct

Answers

Answer:

Write one page about something that happened to youWith interest Grammar

The process by which plants convert carbon dioxide, water, and sunshine into oxygen and sugar-based energy is known as photosynthesis.

What is Photosynthesis?

Plants absorb water (H2O) and carbon dioxide (CO2) from the soil and atmosphere during photosynthesis. Water is oxidized, which means it loses electrons, while carbon dioxide is reduced, which means it receives electrons, inside the plant cell.

Water is converted into oxygen and carbon dioxide into glucose as a result. After storing energy within the glucose molecules, the plant releases the oxygen back into the atmosphere.

Light-dependent reactions and light-independent reactions are the two main stages of photosynthesis. The light-dependent reaction, as its name implies, occurs inside the thylakoid membrane and necessitates a constant supply of sunshine.

Therefore, The process by which plants convert carbon dioxide, water, and sunshine into oxygen and sugar-based energy is known as photosynthesis.

To learn more about photosynthesis, refer to the link;

https://brainly.com/question/1388366

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Which of the following is true about natural selection?
O It can only act on traits that are heritable and show variation
o It allows species to choose what adaptations are passed onto offspring.
O It always favors large, strong individuals.
o It acts on individual organisms, helping them become better adapted to their environment.

Answers

Answer:

A

Explanation:

Which of the following statements is NOT true about the stratosphere?

A.
The stratosphere contains a layer of ozone.

B.
The stratosphere absorbs ultraviolet radiation which protects life on Earth.

C.
Commercial jet aircraft avoid the stratosphere due to the high turbulence there.

D.
The stratosphere is above the troposphere and below the mesosphere.

Answers

Answer:

Explanation:

After doing some g0ogle searches, I believe C is incorrect. Stated from g0ogle, "Commercial jet aircraft fly in the lower stratosphere to avoid the turbulence which is common in the troposphere below. " It seems to me that jets avoid the troposphere, which is below. <3

Answer:

C

Explanation:

the oil layer prevents the entry of air into glucouse explain why is this necssary

Answers

When you have it help me

A high rise condominium is planned for a barrier island that lies off the southwest coast of Florida. Which of these predictions could be made about the impact this construction will have on the sustainability of the coastal ecosystems?
Group of answer choices

Predators will abandon the habitat as humans are the top predator in any ecosystem.

The ecosystem will be destabilized as abiotic resources like available space are reduced.

The costal ecosystem populations will decline until new species evolve that are adapted to live new humans.

Key species found on the barrier island will move to a new habitat.

Answers

Answer:

The ecosystem will be destabilized as abiotic resources like available space are reduced.

Key species found on the barrier island will move to a new habitat.

Explanation:

Due to living of humans on the barrier Island with adversely affected the organisms present on that Island because the loss of habitat occur due to living of humans and the important species migrated to other habitats where no humans are present. So this action greatly change the environment of barrier Island and the ecosystem will be destabilized.

In which stage of meiosis has DNA undergone some type of mixing?
o before DNA replication
O after DNA replication
O during meiosis
O during meiosis II

Answers

Answer:

l think it's answer is

after DNA replication

Answer:

suppose it's item c

Explanation:

because In meiosis I, we face the process of cross over which some of the genes would be transfered.

disease caused by eating undercooked pork painting parasites roundworm larvae​

Answers

Answer:

I believe the disease is called trichinosis.

Explanation:

Choose one of the statements below that is true

Answers

The 3 one hope this helps xx

check out the image ​

Answers

Answer:

Some parts of an ecosystem may never recover after a oil spill

The answer is, some parts of an eco system may never recover after an oil spill

Which apparatus allows us to appreciate the cell internal structures more clearly?

Answers

Answer: a light microscope is likely the answer they are after (can get to micrometer range)

an electron microscope is even more powerful it can get into the nanometer range

Explanation:

Reproductive cells in humans are also called

Answers

Answer:

They could be called Gametes as they are inside the reproductive cells.

Answer: gametes

Explanation: :)

1. The barnacles secrete a cement-like substance that anchors them to rocks in the
a. Intertidal Zone
b. Mangrove Forests
C. Pond Area
d. Tropical forests

Answers

correct answer is a. intertidal zone

describe the picture​

Answers

There is no picture , what picture ?

How many humans are there in india?​

Answers

Answer:

1.38 billion peoples

Explanation:

in 2020 is the estimated total population in India amounted to approximately 1.38billion people

Answer:

1.38 billion people are there

Are all cells the same size?

Answers

Same shape, but not the same size.

Answer:

All cells are a similar shape, yet not all cells are a similar size.

Explanation:

2) Which substance is a product of photosynthesis?
A)
C)
Nitrogen
Glucose
B)
D)
Water
Carbon dioxide

Answers

Answer:

Product of photosynthesis is Glucose

I WILL MARK YOU BRAINELEST IF YOU GET THE QUESTION RIGHT. What type of plate boundary may have existed in Pennsylvania in the distant past? Explain your reasoning.

Answers

Answer:

yo hablo español pasame la actividad en español para ayudarte

Please needed as soon as possible thank you I appreciate it!

Answers

Answer:

A

Explanation:

I belive it would be A, I had to learn something like this a while back. The color spectrum consists of Roy G Biv (Red, orange, yellow, green, blue, indigo, violet) and it reflects. So it's a scattering of light.


22. Identify the major parts of the environment. How do they relate
to the biosphere? (2 points)

Answers

Answer: Parts of the lithosphere, hydrosphere, and atmosphere make up the biosphere. The lithosphere is the outermost layer of the Earth's crust; essentially land is part of the lithosphere.

Explanation:

Why can the River Nile be seen from space?

Answers

Because it’s the longest river in the world

which of the following are key elements of darwin's theory of evolution by natural selection?

Answers

Answer:

Independent assortment and crossing over contribute to diversity within a population's gene pool. These processes occur during meiosis and result in the recombination of DNA.

Explanation:

♥☺ hope it helped

The three pillars of Darwin's theory of evolution are genetic variety, fitness, and adaptation. Overproduction and competition are other crucial components of this process.

What Darwin's theory of evolution by natural selection?

Charles Darwin's theory of evolution is known as natural selection. Due to the limited supply of resources in nature, animals have inherited traits that aid in both survival and reproduction.

Typically, produce more offspring than their contemporaries, leading to an increase in the frequency of such traits across successive generations.

Natural populations exhibit variation, and every population has more offspring than the environment can support. The result of this Overproduction is that those people who have the highest level of environmental genetic fitness will have offspring who are better able to compete in that environment.

Therefore, Genetic variation, fitness, and adaption are all factors in Darwin's theory of evolution.Overproduction and competition are other crucial components of this process.

Learn more about natural selection here:

https://brainly.com/question/2725702

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How does air flow when a low-pressure center occurs in the atmosphere?

Answers

Answer:

A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation.

Explanation:

2. Who was the first to clearly define the idea of
a species?
Abeka Science 7th G

Answers

The most famous definition of a species comes from the 20th century German-born biologist Ernst Mayr, who emphasised the importance of interbreeding.

A sugar farm near the coast of Florida applies a nitrogen based fertilizer to their soil three times a year. When rain falls on these fields after it has been fertilized some of the fertilizer runs off into the ocean causing the nitrogen levels in the water to increase. The increase levels of nitrogen can lead to many ecological effects beginning with the rapid growth of algae. This process is known as eutrophication.

How can eutrophication affect other organisms in the water?

Group of answer choices

The algae provide food for fishes and other organisms, leading to decreased algae populations.

The oxygen in the water is used up as algae is decomposed, reducing the amount available to other organisms.

The water becomes better able to support aerobic organisms.

The extra nitrogen provides additional food for the other organisms, increasing their population.

Answers

Answer:

The algae provide food for fishes and other organisms, leading to decreased algae populations

Explanation:

Excessive nutrients lead to algal blooms and low-oxygen (hypoxic) waters that can kill fish and seagrass and reduce essential fish habitats. ... Eutrophication sets off a chain reaction in the ecosystem, starting with an overabundance of algae and plants.

Which of the following describes the most likely way in which two water molecules will interact?
Choose 1 answer:
Choose 1 answer:

(Choice A)
A
A covalent bond will form between the hydrogen of one water molecule and the oxygen of the other water molecule.

(Choice B)
B
A metallic bond will form between the hydrogens in each water molecule.

(Choice C)
C
A hydrogen bond will form between the hydrogen atom of one water molecule and the oxygen atom of the other water molecule.

(Choice D)
D
An ionic bond will form between the oxygens in each water molecule.

Answers

Answer:

C. A hydrogen bond will form between the hydrogen atom of one water molecule and the oxygen atom of the other water molecule.

Explanation:

Hydrogen bonds form between the hydrogen atom of one water molecule, and the adjacent water molecule of another water molecule, due to attraction between the positive and negative charges. This is called cohesion, and results in weak bonds between water molecules which constantly break and reform.

During the final stages of human gestation, receptors for the hormone oxytocin increase onthe smooth muscle cells of the uterus. The release of oxytocin during labor stimulates thesmooth muscle tissue in the wall of the uterus. The vigorous contraction of the uterine smoothmuscle helps push the baby through the birth canal so that delivery can occur. This processinvolves the interaction of which organ systems? *
A)Endocrine and muscular only
B)Endocrine and reproductive only
C)Endocrine, muscular, and reproductive
D)Endocrine, reproductive, and excretory

Answers

Answer:

im not sure

Explanation:

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