I NEED HELP ASAP! Which of the following is true of variation?

Select one:
a.
It is necessary for natural selection.
b.
It exists in almost all populations.
c.
It is caused by mutations and sexual reproduction.
d.
All of the choices are correct.

Answers

Answer 1

Answer:

all of them are correct

Answer 2

Variations are essential for natural selection to occur. It exists in almost all populations. It is caused by mutations and erotic reproduction. Hence, all of the choices are correct.

What do you mean by Mutation?

A Mutation may be defined as the sudden, stable, and inheritable changes in the genetic material of an organism.

Variations provide the favorable traits that induce natural selection. Variations are caused by mutations, gene flow, and erotic reproduction. It exists in all life forms present on the earth.

Sometimes, variations decide the relative fitness of an organism and thus natural selection occurred.

Therefore, the correct option for this question is D.

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Related Questions

What two body systems interact when blood filters through the kidneys for purification and the waste is removed

Answers

The kidneys ureters, bladder, and urethra make up the urinary system. They all work together to filter, store and remove liquid waste for your body. Hope this helps have a great day
Excretory and urinary system I believe.

Metals and minerals accumulate in specific regions on Earth due to _______ activity and as part of the rock cycle. When sustainable yield is achieved, the rate of replenishment is equal to the rate at which the resource is harvested. This means that the resource can be harvested _______. Plate motion can create the proper temperature and _______ underground for hydrocarbons to release from kerogen.

Answers

Answer: volcanic

indefinitely

pressure

Explanation:

It should be noted that metals and minerals are regarded as non renewable resources which implies that they cannot be replenished.

They accumulate as a result of volcanic activities which takes place in the Earth. The resources can be harvested indefinitely when there is achievement of the sustainable yield. Plate motion can then create the proper temperature and pressure underground that is required for the hydrocarbons to release from kerogen.

Answer:

1. Non-renewable

2. Volcanic

3. Indefinitely

4. Pressure

5. Metals are found in rocks and can be moved by erosion and rainfall. these processes carry metal away from weathered rock, causing metals to accumulate in sediments, rivers, and streams.

Explanation:

From Penn

Which kingdom is multicellular, eurkaryotic, heterotrophic and mobile?

A) Archaebacteria
B) Eubacteria
C) Plantae
D) Protista

Answers

Answer:

The closest one is Plantae, but that is autotrophic.

Pls help it’s due today at 1:00 pm

Answers

Answer:

The mutation is on chromosome/karyotype 8.

Symbiotic relationships are an important component of life. Which of the following relationships are most similar to the relationship between fleas and a dog?


Honeybees and a flower


Shark and a remora fish


Sea anemones and clownfish


Athlete’s-foot fungus and a human

Answers

Answer:

Athletes foot fungus and a human

Explanation:

Since the athletes foot fungus is a disease that a human contracts, it closely resembles the parasitic relationship between fleas and a dog

The fossil remains of an ancient plant are present in a rock as shown below. the rock is most likely: igneous metamorphic crystallized sedimentary

Answers

They are most likely sedimentary rocks

Which example of weather produces heavy winds, Humidity, and lots of rain?

A. Hall storm

B. Hurricane

C. Tsunami

D. Snowstorm

Answers

B: hurricane

Hope this helps

Answer:It B

Explanation:

Based on our knowledge of word parts, what
substrate do you think the enzyme to break
down nucleic acids might be names?

Answers

The answer is catalysis

True or false when thermal energy is added the tempature will increase execpt during a phase change is occuring?

Answers

Answer:

true. when the thermal energy of an object increase the temperature increases

Traits that are determined by more than one gene are called what?

Answers

A polygenic trait is one whose phenotype is influenced by more than one gene. Traits that display a continuous distribution, such as height or skin color, are polygenic.

This picture below shows the fossil of three species of mosasuar, large marine reptiles that are now extinct what do similarities in these mosasaur indicate

Answers

The similarities in the fossil fuels of the given species of the mosasaur indicates a close relationship between the organisms.

The fossil records of the extinct organisms are used for studying the characteristics of their genome and it also helps to understand the similarities and differences between the different species of the same organism which have become extinct.

Several fossil records of thousands of organisms have been recovered and studied by the paleontologists till date. The study of these fossils have suggested that the organisms that have become extinct were very different from the organisms that are found to be present today.

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The embryos of both mammals and reptiles are protected by amniotic fluid. What is this type of trait called? *
a. cladogram
b. outgroup
c. derived
d. molecular evidence

Answers

the answer is C) derived

Answer:

c)derived

is the correct answer I think so

hope it is helpful

Ainhoa belonged to the rock club. She was learning about different types of rocks. Which of the following rocks is formed through squeezing and heating? *
A.Crystal Rock
B.Igneous Rock
C.Metamorphic Rock
D.Sedimentary Rock

Answers

Answer: Metamorphic rock.

Which process produces oxygen?

Answers

Answer: Photosynthesis

Using this list, write down two characteristics that differentiate a football from a basketball:
1.
2.

Answers

Football is also known as soccer game in these game there will be two teams and 11 players in the team.The team which that scores more goals will be the winner.

Basketball is played with two teams with five members in it .Basket Ball was the popular game .

I think these answers might help u

I hope it helps

Answer:

Football is also known as soccer game in these game there will be two teams and 11 players in the team.The team which that scores more goals will be the winner.Basketball is played with two teams with five members in it .Basket Ball was the popular game .

Explanation:

Hope this will help

Una persona hala un trineo a lo largo de un espacio horizontal de 9 m la cuerda con que sa hala forma un ángulo de 60° con la horizontal y la fuerza para mover el trineo es de 125 N a. Calcular el trabajo realizado por la persona al halar el trineo

Answers

Answer:

978,75 Newton metro.

Explicación:

El trabajo realizado es de 978,75 Newton metro cuando la fuerza es de 125 newton, la distancia es de 9 metros y el ángulo es de 60 grados porque cuando usamos la fórmula del trabajo realizado obtenemos esta respuesta. La fórmula del trabajo es fuerza x desplazamiento x Sin (θ). θ muestra la dirección y el ángulo en el que se realiza la fuerza. Entonces, multiplicando todos estos valores obtenemos la respuesta para el trabajo realizado, que es 978,75 Newton metro.

The picture below demonstrates which type of chromosome mutation?

Answers

Answer:

I feel like it's a Translocation Mutation

Explanation:

( :

The wing of a bird and the front limb of a mammal have a similar number and arrangement of bones. Which evolutionary relationship explains these similarities? A. The wing and front limb are homologous structures; each evolved from a common ancestor. B. The wing and front limb are analogous structures; each evolved from a common ancestor. C. The wing and front limb are analogous structures; each evolved independently. D. The wing and front limb are vestigial structures; one evolved from the other.

Answers

Answer:

A

Explanation:

The correct answer would be that the wing and front limb are homologous structures; each evolved from a common ancestor.

Homologous structures are organs of different organisms that look similar in structure but perform different functions on their respective owners. They are as opposed to analogous organs which look different on different organisms but perform similar functions on them.

An example of the homologous organ is the wing of birds and the fore-limbs of mammals which are both built on a five-digit plant, also known as pentadactyl plan. While birds use their wings to fly, the fore-limbs of mammals are adapted for grasping or walking. An example of the analogous organ is the wing of birds and the wing of insects. They both look structurally different but are both for flying.

The correct option is A.

This state of matter has NO definite shape and NO definite volume
Group of answer choices

gas

solid

liquid

Answers

Answer:

Gas is the state of matter has NO definite shape and NO definite volume.

The answer: gas because liquid has volume and solid gas both shape and volume

Some students at a middle school conducted a laboratory investigation to learn more about the physical properties of different elements. They observed four samples and recorded their observations in the table above. Based on these observations, which sample is most likely a nonmetal?



A.
Sample 1

B.
Sample 2

C.
Sample 3

D.
Sample 4

Answers

Answer:

A

Explanation:

1. The colour is non metallic.

2. properties of metal solidness is not there, because of results of hammer experiment.

3. Physical consistency is not solid.

Etc.

From the given observations for the four samples, it can be inferred that sample A is a non-metal. This is because the given properties of sample A do not match the properties of metals. So correct option is option A.

How do metals differ from non-metals?

The properties of metals are different from non-metals. The properties of metals include a high melting point, high density, malleability, and ductility. The metals are shiny and are good conductors of heat and electricity. The metallic oxides are basic in nature

The non-metals have a relatively low melting point, and low density. They are not ductile or malleable as they are brittle. Non-metal has a dull appearance. They are bad or poor conductors of heat and electricity. The oxides of non-metal are acidic in nature.

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What do you call the pairs of chromosomes in a karyotype???? Need helllpp

Answers

Answer:

homologous chromosomes

Explanation:

what relationship does chromosome and dna

Answers

Answer:

DNA contains the instructions, genes, to make proteins that tell what genetic traits the person will have. The DNA along with the proteins make up the chromosomes. The chromosomes are then passed on to the offspring, and with the DNA inside the chromosomes and translation of the genes, its traits are decided

Explanation:

I hope that this helped you ;)

Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

PLEASE HELP IF YOU UNDERSTAND PHYLOGENETIC TREES

Answers

Answer:

The answer is N

Explanation:

This is because it is the closest relative not an ancestor to L and is extinct as it is not at the present time mark. We know it is the closest relative as they have the same ancestor and were around at a very similar time mark.

Which of the following is NOT a factor that affects wind?

Answers

Answer:

i think its friction or A

Explanation:

PLZ HELP AS FAST AS YOU CAN!!!!!!!!!!!!!!!!
Which of these belong to the Phylum Arthropoda (Select all that reply.)
A. Butterflies
B. Lobsters
C. Spiders
D. Oysters

Answers

Answer:

Many familiar species belong to the phylum Arthropods—insects, spiders, scorpions, centipedes, and millipedes on land; crabs, crayfish, shrimp, lobsters, and barnacles in water. Arthropods are considered the most successful animals on Earth.

Explanation:

But the answer is spiders

Answer:

Its B and C.

Explanation:

Almost all animals belong in the Phylum Arthropoda.

How are ATP molecules used to power cell processes and what happens to ATP when it is used?

Answers

Answer:

Explanation:

ATP is able to power cellular processes by transferring a phosphate group to another molecule (a process called phosphorylation). This transfer is carried out by special enzymes that couple the release of energy from ATP to cellular activities that require energy

HOPE IT HELPED YOU

10. Which type of cell lines the oviduct?

Answers

Answer:

Cell like hair ciliated cells :3

Explanation:

:3

Why does the moon have a stronger influence on the Earth, than the sun, causing tides?
a. The moon is much, much closer to the Earth than the sun, causing a greater gravitational pull on the Earth and Ocean.
b. The moon is larger than the sun, causing a greater gravitational pull on the Earth and Ocean.
c. The moon is further away from the Earth than the sun, causing a greater gravitational pull on the Earth and Ocean.

Answers

Answer:

The Correct Answer Is A:

The moon is much, much closer to the Earth than the sun, causing a greater gravitational pull on the Earth and Ocean.

Explanation:

sure the sun is wayyy bigger than the moon,

but the fact the the moon is way closer makes a big impact on the earths surface tides.

Which is a unicellular fungus?
A Slime mold
B Mushroom
C Yeast
D none of these​

Answers

Explanation:

Unicellular fungi are generally referred to as yeasts. Saccharomyces cerevisiae (baker's yeast) and Candida species (the agents of thrush, a common fungal infection) are examples of unicellular fungi. Example of a unicellular fungus: Candida albicans is a yeast cell and the agent of candidiasis and thrush.

Which two compounds are made during the light reactions and used to fuel the Calvin cycle?
ATP and NADP+
ATP and NADPH
ADP and NADPH
ADP and NADP+

Answers

Answer:

ATP and NADPH

Explanation:

The light dependent reactions harness energy from the sun the creat ATP and NADPH

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