In the late 1800s, a biologist studying animal embryos coined the phrase "ontogeny recapitulates phylogeny," meaning that the physical development of an animal embryo (ontogeny) seemed to retrace the changing form of the species during its evolutionary history (phylogeny).

Why would embryonic development retrace evolutionary steps?

Answers

Answer 1

Answer:

Embryo provides information about their ancestors.

Explanation:

Embryonic development retrace evolutionary steps because embryo provides evidence for evolution as embryo formation in widely-divergent groups of organisms are conserved. This embryo provides information that leads to their ancestors from which they evolve so we can say that embryonic development provides evidence for evolution of an organism.


Related Questions

PLEASE SOMEONE HELP I’ll help back pls!!

Answers

5) If you did a moderately intense exercise, such as walking, you may have seen an initial jump in your heart rate (where your heart rate falls within the lower end of your target heart rate zone within about one minute of exercise), but then your heart rate only slowly increased after that.
I’m not sure if it’s the correct answer but I hope it helps you !! also can u help me back I really need it . good luck !!

The __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ carries low oxygen blood to the lungs and brings high oxygen blood back to the heart.

Answers

Answer:

Pulmonary blood vessel

Explanation:

The pulmonary blood vessel carries low oxygen blood to the lungs and brings high oxygen blood back to the heart.

More specifically, the pulmonary artery carries low-oxygen blood to the lung from the right ventricle of the heart. The blood becomes oxygenated in the lung and the oxygen-rich blood is taken back to the left atrium of the heart by the pulmonary vein.

Large cells have more volume on the inside and less space on the outside. (Compared to a smaller cell) Because of this, large cells have trouble;

A) dividing
B) producing daughter cells
C) moving materials in and waste products out
D) making copies of their DNA


Heeeeeellppp plzzzz

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C) moving materials in and waste products out

Where do you look in a plant cell to find dividing cells

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Answer:

I believe you would want to look in the meristem of the plant

Explanation:

Why is most of the carbon dioxide produced by green plants not excreted as metabolic waste (given off because it is not needed)?

Answers

Answer

I think during the day the sun helps the plants grow with sun light but at night there is no sun help them grow so it takes the plants longer to grow this is what I think! sorry if it is wrong!

What part of a cell is more prone to mutations
What part of a cell is most prone to mutations

Answers

Answer: The DNA

Explanation: DNA is the only part of the cell that can mutate. That DNA could cause other cell parts to have mutations further down the road, though.

If you mean what part of the cell cycle, then it is interphase, while DNA is replicating.

It’s what the other person said

11. Which of these are objects that circle stars other than Earth's sun? Choose the correct answer.
Debelas
exoplanets
planetesima
nebulas​

Answers

Answer:

Exoplanets

Explanation:

Exoplanets (also known as extrasolar planet) are other planets outside the solar system. Exoplanets are of different categories, some of them orbit around other stars while some called rogue planets orbit the galactic center.

There are more than 4000 exoplanets which have been discovered, these planets have been discovered using the process of  Transit photometry and Doppler spectroscopy.

which lipid acts as a chemical messenger? adipose tissue, cholesterol, testosterone or beeswax

Answers

Answer:

Testosterone

Explanation:

Testosterone is a chemical messenger that the brain lets out to upper and lower body muscles. Testosterone chemical messenging happens when you're exercising, pumped with adrenaline, or sexual activity.

PLS ANSSWER

A group of plant eating animals moves far away from their original population. In the new environment, the only edible vegetation grows at the top of tall trees. In order to survive, the animals need a new adaptation. Which of the following variations would be the most useful new adaptation to members of the group?
A) Wider, flatter teeth that can chew and grind plant material.


B) A longer neck to reach the vegetation that is high up in the trees.


C) A better digestive system for breaking down plant material.

D) Larger ears and eyes located on sides of head to detect predators.

Answers

Answer:

B

Explanation:

The others would not help because the animals could not reach the vegetation.

B, they would need the longer necks to reach the food

What molecule is used as energy to directly fuel cellular processes like movement, growth and reproduction?

Answers

Answer: Energy

Explanation:

Energy. The glucose molecules serve as fuel for cells: their chemical energy can be harvested through processes like cellular respiration and fermentation, which generate adenosine triphosphate— ATPstart text, A, T, P, end text, a small, energy-carrying molecule—for the cell's immediate energy needs.

Sea otters regulate the presence of the sea urchins and thus, kelp is regulated for all organisms in the ecosystem. They help to keep enough kelp for other wildlife to feed on. Also, due to their ability to absorb carbon dioxide, the kelp aid in mitigating climatic change and also reduce erosion by reducing the speed of water at the coast.However, if there were too many sea urchins and no sea otter to regulate their production, the kelp would reduce and thus with no food in the ecosystem, it would collapse. As a result, the sea otter protects the kelp forests by checking the local sea urchin population. The sea otter is an example of a

Answers

Answer:

keystone species

Explanation:

The sea otter is an example of a keystone species in the scenario.

A keystone species is an organism that has a significant influence on the functioning of the entire ecosystem. Without this species, the ecosystem would either cease to exist in total or entirely different in structure. In other words, a keystone species is a fastener that holds the ecosystem together.

In this case, the sea otter indirectly regulates kelp for all organisms in the ecosystem by directly regulating the presence of sea urchins. Without kelps, several ecosystem functions such as climate change mitigation and erosion reduction would cease. Thus, the sea otter is playing a significant role as a keystone species.

James examines a cell from an aloe plant and a cell from an owl feather. Which structure is found only in the cell from the aloe plant?
O A. chloroplast
OB. membrane
O C. mitochondrion
O D. nucleus

Answers

I’m thinking it’s A. Chloroplast

The chloroplast will only be found inside the Aloy plant while other structures will be shared by both cells. Option A is correct.

Difference between Plant and animal cells:Both plant cell animal cells are eukaryotic cells, but both have some unique structures.Plants have a cell wall but animals just have a cell membrane.A plant cell has a chloroplast for photosynthesis while an animal cell does not have a chloroplast.

Since owl is an animal and Aloy is a plant

Therefore, the chloroplast will only be found inside the Aloy plant while other structures will be shared by both cells.

Learn more about eukaryotic cells:

https://brainly.com/question/637711

HELPPP!!! ASAPPP!!!!
What does it mean to say that amphibians have a double life?
(NOT A MULTIPLE CHOICE QUESTION)

Answers

Answer:

They start off with gills in the water when they are born. As they mature they lose the gills and need air to breath at maturity.

Explanation:

a tadpole to frog is an example of an amphibian.

please help me...
......... ​

Answers

Answer:

1. Ribosomes

10. Osmosis

11. Cell membrane

12. Solvent

13. Cytoplasm

15. Organ

16. Permeable

17. Specialized cells

18. Solute

19. Active transport

2. Electron microscope

3. Organelles

4. Mitochondria

5. An Organ system

6. Optical microscope

7. Tissue

8. Concentration gradient

9. Nucleus

14. Diffusion

what type of scientist was Alfred Wegener?​

Answers

Answer:

Meteorologist

Explanation:

Wegener was a meteorologist in the late 1800s to early 1900s

he was also a geophysicist, meaning he investigated physical processes and properties of the earth

please help ill mark brainiest istgg

Answers

Answer:

B because they are mutated and they are dividing faster than group A

Explanation:

Phospholipids
are _________
meaning they have hydrophobic and hydrophilic sections
A. Saturated
B. Hydrogenated
C. Glycogenic
D. Amphipathic

Answers

Answer:

Answer is question number d)Amphipathic

PLEASE HELP I NEED TO GET THIS QUESTION RIGHT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
A flask filled with water and organic molecules was left open to the air for an hour and then was tightly stoppered. After being allowed to sit for a week, the flask was reopened and checked for living organisms. Only anaerobic bacteria were found living in it. Which of the following can be assumed about the conditions within the flask during the week it sat tightly stoppered? (4 points)


Group of answer choices


There were carbon-based gases in the water.


There was abundant oxygen in the flask.


There was no oxygen in the flask.


Sunlight must have entered the water.

Answers

Answer:

There was no oxygen in the flask.

Explanation:

Anaerobic organism do not need oxygen!!

2. There are many different types of cancer.
Which of the following is one thing they all have in common?
a. They are all caused by uncontrolled cell death.
b. They all start in the lungs and migrate to different parts of the body.
c. They are all caused by uncontrolled cell growth.
d. All of the above
e. None of the above

Answers

Answer:

i think its a im not sure though

Which organelle is generally larger in plant cells than in animal cells?
A mitochondrion
B. nucleus
C. ribosome
D. vacuole

Answers

Answer: D. VACUOLE

Explanation:

Answer:

D

Explanation:

Please help me! Tysm.

Answers

Earthquakes will most likely happen

The answer is earthquakes.

Name the infectious agents can be good or bad for the human body and can even live skin

A. fungi
B. bacteria
C.parasites
D. viruses

Answers

Answer:

b

Explanation:

Explanation:

There are five major types of infectious agents: bacteria, viruses, fungi, protozoa, and helminths. In addition, a new class of infectious agents, the prions, has recently been recognized.

Hope this helps!

what are the helpful measures to conserve human energy??​

Answers

Answer:

Adjust your day-to-day behaviors

Energy conservation can be as simple as turning off lights or appliances when you do not need them. You can also use energy-intensive appliances less by performing household tasks manually, such as hang-drying your clothes instead of putting them in the dryer, or washing dishes by hand.

From memory, list the 5 characteristics of life.

Answers

Answer:

Cells.

Obtain and Use Energy.

Reproduction.

Respond to the Environment.

Adapt/Evolve.

Explanation:

how do plants grow helppp

Answers

Answer:

During photosynthesis, plants take the water from the soil, and the carbon dioxide from the air, and they make sugars out of it. When plants have the right balance of water, air, sunlight and nutrients, their cells grow and divide, and the whole plant gets bigger and bigger. And that's how plants grow.

Explanation:

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define cartilage and nucleoplasm​

Answers

Answer:

cartilage: firm, whitish, flexible connective tissue found in various forms in the larynx and respiratory tract, in structures such as the external ear, and in the articulating surfaces of joints. It is more widespread in the infant skeleton, being replaced by bone during growth.

nucleoplasm​:the substance of a cell nucleus, especially that not forming part of a nucleolus.

Explanation:

Cartilage is also defined as aneural and hypocellular tissue [3], where normal mechanisms of tissue repair are not easily restored.

Nucleoplasm is the substance of a cell nucleus, especially that not forming part of a nucleolus

Which of the following statements best describes the state of DNA inside of a prokaryotic cell?

a
46 X-shaped chromosomes inside the cytoplasm
b
46 X-shaped chromosomes inside the nucleus
c
a single circular chromosome in the cytoplasm
d
a single circular chromosome in the nucleus

Answers

Answer:

C.

Explanation:

It's a single strand of circular DNA found in the central area of the cell, which is not surrounded by a nuclear membrane.


16.Which type of sediments would be most common where a river meets an ocean?
A. biogenous
B. cosmogenous
C. hydrogenous
D. lithogenous

Answers

C sounds most likely because HYDROgenous and Hydro means water
Answer has to be C . HYDROgenous

Describe what happens to water particles when ice metls.

Answers

Answer:Ice melts when heat energy causes the molecules to move faster, breaking the hydrogen bonds between molecules to form liquid water. In the melting process, the water molecules actually absorb energy.

Explanation:

What he said ^^
I’m pretty sure that’s right so yeah

HELPPPP pls I need answer fast like flash

Answers

Answer:

and im here hi

Explanation:

was i fast enough?

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