What type of variation is necessary for natural selection to occur? (3 points)

Group of answer choices

Artificial variation

Environmental variation

Genetic variation

Neutral variation

Answers

Answer 1

Answer:

Genetic

Explanation:


Related Questions

Which of the following is one of the chemical building blocks of cells? a. water c. air b. food d. carbohydrates

Answers

Answer:

d. carbohydrates.

Explanation:

Sugar-consisting molecules. As a source of energy and energy storage cells employ carbs. The carbohydrates in the cells of an organism are broken down to release the stored energy.

Simple carbohydrates

Composed of one or a few molecules of sugar. Examples of simple carbs are table sugar and fruit sugar.

Complex Carbohydrates

Extra sugar from an organism may be preserved as complex hydrates of carbon. They consist of hundreds of molecules of sugar.

Albinism, the total lack of pigment, is due to a recessive gene. A man and woman plan to marry and wish to know the probability of their having any albino children. What are the probabilities if:
Both are normally pigmented, but each has one albino parent.
Dad is an albino, the mom is normal, but mom’s father is an albino.

Answers

Answer: if someone in the family carries the albino gene especially both parents genes or a possible ancestor it van be passed from 1st or second generations  

Explanation:

Describe the structure of the
cell membrane and its components

Answers

Answer:

The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins. A phospholipid is a lipid made of glycerol, two fatty acid tails, and a phosphate-linked head group.

Explanation:

Please Answer

Which of the following is an example of a heritable characteristic (or inheritable trait) possessed by an animal that will improve its reproductive potential and survivability in its environment?

a. Position of geese flying in V formation
b. Color and shape camouflage of praying mantis
c. Muscle atrophy in aging dogs
d. Male dominance in a pack of wolves

Answers

i think the answer would be B, because the color and shape is a trait/characteristic that will improve its survival chances

The color and shape camouflage of praying mantises is an example of an heritable trait possessed by an animal that will improve its reproductive ability and survivability in its environment. So, the correct option is (B).

What are Traits?

A phenotypic trait is defined as a specific type of a phenotypic characteristic of an organism that can be either inherited or environmentally determined, but usually occurs as a combination of both.

These are characteristics or features of an organism that are expressed by genes and/or influenced by the environment including physical properties of the organism such as hair color, leaf shape, size, etc., and behavioral characteristics such as bird nests.

The color and shape camouflage of praying mantises is an example of an heritable trait. Thus, the correct option is (B).

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As mountains are worn down, the eroded metamorphism is deposited
on adjacent landscapes
A: True
B: False

Answers

Answer:

I believe it is true

Explanation:

but im not 100% sure

Does this satisfy the octet rule why or why not

Answers

Answer:

No, it does not, because the octet rule says that an atom needs to have eight electrons in its valence shell to be stable. The exceptions are hydrogen and helium, which need only two electrons

Answer: No it doesn’t

Explanation:

How does a bird develop?

Answers

Birds start their lives inside the egg. When some birds hatch from the egg they are covered in downy feathers, and they are able to run around and find their own food. Many ground-living birds, such as pheasants and ducks, develop in this way.

Answer:

All birds start their lives inside an egg.  When some birds hatch from the egg they are covered in downy feathers, and they are able to run around and find their own food. Many ground-living birds, such as pheasants and ducks, develop in this way.

The information in this rectangular codon chart could be represented in a different way (ex: circular codon chart).
CIRCLE ONE:
TRUE
FALSE

Answers

true i believe fix if im wrong

Imagine that you are a scientist who has discovered a new object. You want to find out if the object is biotic or abiotic. You observe several characteristics about the new object. Which of these characteristics would tell you that the object is abiotic, or not alive?

Answers

Abiotic factors refer to non-living physical and chemical elements in the ecosystem. Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere. Examples of abiotic factors are water, air, soil, sunlight, and minerals. Biotic factors are living or once-living organisms in the ecosystem.

The characteristics which would tell that the object is abiotic, or

not alive include the following:

Inability to eat,Inability to respond to stimuli,Inability to excrete,Inability to reproduce etc.

What are Abiotic factors?

These refers to the non-living component of the ecosystem.

Examples include water, sunlight etc.

These non-living things aren't able to perform the activities

which are listed above.

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Describe the organsim causing coronavirus​

Answers

Answer:

it's a virus

Corona virus

a family of virus

Explanation:

it is a deadly infectious virus

how do i help people i’m trying to add a biology answer that i got right but don’t know how

Answers

Answer:

You press(or click) the "Answer" button thats on the bottom right of the question.

Explanation:

You press(or click) the "Answer" button thats on the bottom right of the question.

Also this passage is related to the previous questions

Answers

Answer:

I dunno please gimme points and mark brainliest

Explanation:

if the atmosphere is 21% oxygen and the cornea contains 15% oxygen, which direction will more of the oxygen molecules travel: into the cornea or out of the cornea

Answers

According to simple diffusion. Molecules travel from high concentration to low. So it would be traveling into the cornea

What is the constant variable in that? Please help!! You’ll get brainlylist..

Answers

Answer:

Zits/skin

Explanation:

a constant variable is something that stays the same throughout the process and that is the only thing that I can see that would be constant

6. What are the key structures used in the translation process?

Answers

Answer:

Two types of molecules with key roles in translation are tRNAs and ribosomes.

Explanation:

In rabbits, straight ears (E) are dominant to floppy ears (e), Two rabbits are crossed, and 50% of their offspring have floppy ears. Which cross represents the
genotypes of the parents?
EEXEE
EE x ee
Ee x EE
Ee x ee

Answers

Answer: Ee x ee

Explanation:

Answer:

The correct answer is Ee x ee :)

Explanation:

According to the key, which statement best describes Fiordland crested penguins? A. They have only black and white feathers and live north of the equator. B. They have yellow or orange feathers on top of their heads and no bare skin around the base of their beaks. C. They have only black and white feathers and live south of the equator. D. They have yellow or orange feathers on top of their heads and bare skin around the base of their beaks.

Answers

b! good luck on your test/assignment! x - cloudie

The picture shows what level of body organization (hint: Muscular, Skeletal, Circulatory)

A. Cell
B. Tissue
C. Organ system

Answers

Answer:

c

Explanation:

Which conclusion is supported by this evidence? Neither ball has a charge. The balls are both positively charged. One ball is positively charged, and the other is negatively charged. Each ball has a charge, but the type of charge is unknown.

Answers

Answer:

The correct answer is - Neither ball has a charge

Explanation:

If the two balls are hanged near one another without touch or an external charge to any of the balls there would be no charge present. In the given question is it given that two balls hang down without any contact in them.

So there is no possible way to generate charge and remain uncharge in their position till they get any external charge.

The correct answer is - Neither ball has a charge

3. Run the simulation four times and record the post-drought frequencies in the table.
Trial
1
2
3
4
Average
Blue Allele
T5
.5
.625
.5
.53125
Red Allele
.5
.5
.375
.5
.46875
Blue Phenotype
.25
.25
.39
.25
.285
Purple Phenotype
.5
.5
47
.5
.4925
Red Phenotype
.25
.25
.14
.25
.225
4. Describe your results.
I
to search
O

Answers

Explanation:

xndsjsnssjsjzjsjdjxjxnfnddjduxuyy t t arc rey ye yes dhdjdjd

Why are some genetic traits very common in certain parts of the world (ex:
brown eyes in California, blue
eyes
in Britain, etc.)?

Answers

Answer:

you are going to have less diversity in specific areas. they will typically have kids with someone they met where they live, and a person will live where they were born. same how mexican people have the same skin color in Mexico.

Waste produced by agriculture, mining, households, industry and other
human activities can end up in which of the following?*
A: Oceans
B:groundwater
C:streams and rivers
D:all of the above

Answers

If your could pick more then 2 answers the pick a and c and if yiu cants it’s a or c

how are energy and matter transferred between organisms and their environment

Answers

Answer:

The energy is transferred both to the decomposer (for growth and development) and to the ecosystem (as heat energy).

Explanation:

Answer:

Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. ... Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments.

why is the bluefin tuna considered an endangered species?

Answers

Answer:

It's because they get eaten

Overfishing. bluefin tuna is considered endangered because of overfishing of illegal fishing

what is a portion of DNA that is condensed and rod like

Answers

Answer:

Chromosome

Explanation:

Answer:

Chromosome

Explanation:

PLEASE HELP!!!!! FIRST ANSWER GET BRAINIEST!!!!!
A lichen is an organism that structurally appears to be a single organism. But a lichen is actually two different organisms—a fungus and green algae—living together as one organism. The fungal partner derives its nutrition from the photosynthesizing algae. How does a lichen differ in its photosynthetic activity from Elysia chlorotica, the sea slug that’s considered to be a photosynthesizing animal?
A.
In lichens, the fungi photosynthesize on their own, while Elysia chlorotica forms a relationship with a photosynthesizing plant.
B.
In lichens, the relationship with the algae lasts throughout the life cycle, but in Elysia chlorotica, the relationship occurs only during the immature juvenile stage of the slug’s life cycle.
C.
Lichens can photosynthesize only because of the living algal partner, while Elysia chlorotica incorporates chloroplasts from algae into its cells.
D.
In lichens, the association between the fungi and algae is permanent, while Elysia chlorotica associates with a photosynthesizing organism only when it requires food.

Answers

Answer:

B. Cycle

Explanation:

Lichen performs photosynthesis with the assistance of an algal partner, but Elysia chlorotica incorporates the chloroplast from an algal partner, which is how lichens vary from Elysia chlorotica in this regard,  hence option C is correct.

How does lichen photosynthesize?

A process known as photosynthesis is one in which green plants and some photosynthetic algae produce their own food, glucose, using carbon dioxide and water in the presence of light.

Lichen is a symbiotic association between an algal component that produces food and a dominant partner fungus that gives the lichen its thallus form and fruiting bodies. A particular species of mollusc called Elysia chlorotica uses the chloroplast of an algal partner to carry out the photosynthesis process.

Therefore, Lichens can photosynthesize only because of the living algal partner, while Elysia chlorotica incorporates chloroplasts from algae into its cells, hence option C is correct.

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transcription & translation worksheet
anyone know how to do this?

Answers

I never see that before in life sorry I wish get that answer for u

What does a number in front of a molecular formula stand for???????

Answers

Explanation:

The small number behind each element symbol designates the number of atoms of each element in a chemical formula. If there is no number, it is assumed there is only one of those elements. A large number designates how many units there are of that compound.

Answer:

Element's number of atoms in a chemical formula

Explanation:

The small number behind each element symbol indicates each element's number of atoms in a chemical formula. If there is no number, it is assumed there is only one of these elements. A huge numeral in front of a compound designates whereby many units there are of that compound.

What would "two pairs of chromosomes in the original cell" look like?

Answers

Answer:

Two X chromosomes for females and one X and one Y chromosomes for males.

Explanation:

the human body has 23 pairs of chromosomes, or 46 in total. This includes two sex chromosomes : because each chromosome has a pair, these cells are called "diploid" cells .

what are infectious agents?

A. agents that investigate a different type of infection
B. attackers that can cause a response by the immune system
C. attacker that cannot cause a response by the immune system
D. infectious agents are always good for the human immune systeme

Answers

D hope that helps good day
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