Which best illustrates the relationship between variations within a population and natural selec- tion? A Natural selection acts upon a population since all members of the population are identical. B Organisms are able to change their genetic makeup to best adapt to a changing external environment. C Giraffes have long necks and legs from stretching to reach food in trees. This trait was then passed to their offspring. D Antelopes with muscular legs are able to outrun their predators better than antelopes with poor muscle tone. Thus they lived to reproduce.​

will give brianliest!!! please!

Answers

Answer 1

Answer:

d.

Explanation:

d. Antelopes with musclar legs are able to outrun their predators better than antelopes with poop muscle tone. thus they lived to reproduce.

Answer 2

Antelopes with muscular legs are able to outrun their predators better than antelopes with poor muscle tone, thus they lived to reproduce. This best illustrates the relationship between variations within a population and natural selection.

What is Evolution ?

The process by which populations of organisms change over generations is known as evolution. These modifications are based on genetic variations. Gene variants, also known as mutations, or the normal process of genetic material being rearranged as a cell prepares to divide (known as genetic recombination) can cause genetic variations. An organism may acquire new characteristics as a result of genetic variations that alter protein function or gene activity. In the event that a characteristic is favorable and helps the individual get by and replicate, the hereditary variety is bound to be passed to the future (a cycle known as normal determination). The advantageous trait becomes increasingly common in a population over time, making it distinct from an ancestral population as generations of people with the trait continue to reproduce. Occasionally, the population becomes so distinct that it is regarded as a new species.Evolution is not influenced by all variants. Only hereditary variants, which are found in sperm or egg cells, can be passed down through generations and have the potential to influence evolution. Because some variants are not inherited and only exist in a small number of a person's body cells over their lifetime, natural selection cannot be a factor. Also, many genetic changes are neither beneficial nor harmful because they have no effect on how a gene or protein works. A population of organisms' environment also plays a significant role in the selection of traits. Variants can introduce differences into an organism that may help it survive in one environment but not in another. For instance, resistance to a particular bacteria is only beneficial if that bacteria is found in a specific location and harms the people who live there.

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Related Questions

Prophase - Metaphase – Anaphase → Telophase
The shown figure describes —
O mitosis
O meiosis
O cytokinesis

Answers

Answer:

Mitosis

Explanation:

It takes place in two stages, e. g. Karyokinesis and Cytokinesis.

Phenylthiourea,PTC, can be Taste it by some individuals but not by others. Students tested everyone in third grade to see who could taste PTC 100 students total. The ability to taste PTC is a dominant trait. 10 people in the great were unable to taste PTC

Answers

Answer:

Value of p: 0.68

Value of q: 0.32

Why are decomposers an important part of a food chain?
A. Decomposers put nutrients back into the soil for new plants to grow.
B. Decomposers produce their own food from light energy and carbon dioxide.
C. Decomposers are the original source of energy in a food chain.
D. Decomposers build up toxins in the soil.

Answers

Answer:

A. Decomposers put nutrients back into the soil for new plants to grow.

Why would pollution contamination of an aquifer be potentially more serious (put more
people at risk) than contamination of a small surface pond? You can annotate the
diagram below to support your explanation

Answers

I think because it would get into our drinking water. And an aquifer is ground water that we use for many things like a well is how we extract ground water

Determine whether each of the following is a characteristic of DNA, RNA or BOTH

Answers

Answer:

Explanation:

1. RNA

2. Both

3. RNA

4. Both

5. DNA

6. Both

7. DNA

b6.Which type of reproduction results in offspring that are most different from the parent
organisms?
A. Nonsexual
B. Sexual
C. Unisexual
D. Asexual
WILL GIVE BRAINLY

Answers

Answer:

sexual

Explanation:

Because two parents are involved in reproduction

Cells of the amine system are able to respond to the presence of invading organisms because they recognize the

Answers

Answer:

Cells of the immune system are able to respond to the presence of invading organisms because they recognize the antibodies present in the invading pathogen

Explanation:

The mechanisms of human immunity can be grouped into two broad categories: the innate or nonspecific immune system, which provides a first and general defense against any element recognized as foreign, and the acquired or specific immune system that recognizes specific threatening agents and generates a response directed against those elements. When foreign substances enter our body (bacteria, viruses, parasites, proteins from other animal or plant species, cells from other organisms - including those of human origin - and a long etcetera, all of which are given the common name of antigens) and are brought into contact with cells that are members of the immune system, the foreign element or antigen is first captured by certain types of cells that are collectively known as antigen-presenting cells. These cells would correspond to the intelligence service and their mission is to take the antigens, introduce them inside, process them and present the antigens on their surface in a fragmentary way to other cells of the immune system. This results in the activation of lymphocytes that specifically recognize the antigen and ends in the development of mechanisms that mediate the physiological function of the response, that is, the elimination of the antigen. Thus, the immune response can be functionally divided into three phases: the antigen recognition phase, the activation phase of the response, and the effector phase.

Which are characteristics of arthropods? Check all that apply.
radial symmetry
nervous system
asexual reproduction
segmented body
open circulatory system

Answers

Answer:4 5

Explanation:

Answer:

3 & 5

Explanation:

just did the test

C or d? I need help please

Answers

most definitely c choose c actually no

Question 7 (2 points)
Which statement best completes the sentence below:

Skin, part of the integumentary system, is your body's -

A. organ that increases metabolism.

B. location for white blood cell production.

C. first line of defense against infection.

D.only way to protect from viruses.

Answers

Answer:I think the answer is c

Explanation:

what do density-independent and density-dependent mean? (please answer a bit simply lol)

Answers

Density-dependent regulation can be affected by factors that affect birth and death rates such as competition and predation.

Answer:

Density independent factors refer to any influences on a population's birth or death rates, regardless of the population density. Whereas, Density dependent factors affect a population through increasing or decreasing birth and death rates.

which inheritance produces blue and yellow striped fish from a blue parent and yellow parent

Answers

Your answer would be co-dominance inheritance. As the offspring inherits both allele and neither are recessive. So both phenotypes are shown.
I hope that helped! :D

what are the main jobs of 1. sweat glands 2. epidermis 3. iris 4. sensory neuron 5. optic nerve 6. lens

Answers

Answer:

Explanation:

1.regulates body temperature.

2.regulate fluid and protect the body from mechanical injury.

barrier that protects the body from ultraviolet (UV) radiation, harmful chemicals, and pathogens such as bacteria, viruses, and fungi.

3.responsible for regulating the amount of light that gets into the eye.

4.responsible for converting external stimuli from the environment into corresponding internal stimuli;send projections to other elements of the nervous system, ultimately conveying sensory information to the brain or spinal cord.

5.job of the optic nerve is to transfer visual information from the retina to the vision centers of the brain via electrical impulses.

6. lens focuses the light rays that pass through it in order to create clear images of objects that are positioned at various distances

WHAT IS PHOTOSYTHESIS?

Answers

Answer:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities

Explanation:

Answer:

Photosynthesis is a process by which phototrophs convert light energy into chemical energy, which is later used to fuel cellular activities. The chemical energy is stored in the form of sugars, which are created from water and carbon dioxide.

Explanation:

:)

Why OR Why shouldnt we build power plants in france? PLEASE anwser question thoroughly!!!

Answers

Answer:

We should not build more power plants in France because of a few reasons. reason 1 carbon emissions are terrible for our planet and we already have enough pollution. reason 2 we have a very low fuel supply as it is and using it up for things we don't need is not sufficient. Reason 3 is money. France is in a debt of 3,403.24 euros. we should not be spending what we don't have. These are the reasons why we should not build power plants in France.

Is the relationship between Riftia pachyptila and the chemosynthetic bacteria an example of symbiosis?

Answers

Answer: YES. The relationship between Riftia pachyptila and the chemosynthetic bacteria is an example of SYMBIOSIS.

Explanation:

Nutrition is the series of process by which living organisms obtain food substances and use them to provide energy and materials for their growth and maintenance. There are 2 major modes of nutrition which includes:

--> Heterotrophic nutrition: this is the type of nutrition in which the organism depends on manufactured food for survival. Heterotrophic organisms may be SYMBIOTIC which means that it can live together with another organism as they both benefit from each other.

--> Autotrophic nutrition is the type of nutrition in which an organism has the ability to manufacture its own food. This can be achieved through the process of CHEMOSYNTHESIS. In this process, they synthesis organic compounds with the use of energy from inorganic compounds such as carbondioxide. An example is the chemosynthetic bacteria found in the gut of Riftia pachyptila.

Riftia pachyptila is an aquatic invertebrate that is seen at the seafloor near hydrothermal vents ( high temperature area). They do not have digestive system that will enable them make use of the inorganic materials (carbondioxide, sulphide) found in their environment. But within their paired coelomic cavities are chemosynthetic bacteria.

The relationship between Riftia pachyptila and the chemosynthetic bacteria is an example of SYMBIOSIS because the chemosynthetic bacteria depends of the Riftia pachyptila for the necessary inorganic compounds for its own metabolic reactions and excretion of by products while Riftia pachyptila depend on the bacteria for byproducts from its metabolic reaction which is needed for its growth.

YES, the connection between Riftia pachyptila and therefore the chemosynthetic bacteria is an example of SYMBIOSIS.

Nutrition-

Nutrition is the series of processes by which living organisms obtain food substances and use them to supply energy and materials for growth and maintenance.

There are 2 major modes of nutrition which includes:

Heterotrophic nutrition is the sort of nutrition during which the organism depends on manufactured food for survival.Autotrophic nutrition is the sort of nutrition during which an organism has the power to manufacture its own food. this will be achieved through the method of CHEMOSYNTHESIS.

Riftia pachyptila is an aquatic invertebrate that's seen at the seafloor near hydrothermal vents ( heat area).

They do not have gastrointestinal system which will enable them make use of the inorganic materials (carbondioxide, sulphide) found in their environment. But within their paired coelomic cavities are chemosynthetic bacteria.

The relationship between Riftia pachyptila and therefore the chemosynthetic bacteria, chemosynthetic bacteria depends on the Riftia pachyptila for the required inorganic compounds.

For its own metabolic reactions and excretion of by-products Riftia pachyptila depends upon the bacteria for byproducts from its metabolic reaction which is required for its growth.

Therefore, Yes, the relationship between Riftia pachyptila and the chemosynthetic bacteria are an example of symbiosis.

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PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELP PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ 20 POINTS PER ANSWER PLZ BE RIGHT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
A certain fungus gets energy from decaying or dead organic matter. Which term best describes this fungus?

symbiotic

parasitic

saprophytic

autorophic

Answers

Answer:

saprophytic

Explanation:

Answer:

I think its saprophytic fungi

Explanation:

Which of the following is the most inclusive component of an organism?

A.
DNA
B.
genes
C.
proteins
D.
chromosomes

Answers

Answer:

d

Explanation:

I looked it up and it said it was d

The inclusive component of an organism is chromosomes.

What are chromosomes?

Chromosomes are thread-like structures in look which are located inside the nucleus of any animal as well as plant cells.

A chromosome is made from protein as well as a single molecule of DNA.

The inclusive component of an organism is chromosomes.

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Describe 3 differences between a plant cell and an animal cell.
1.
2.
3.

Answers

Answer:

Plant cells have a cell wall, but animals cells do not.

Plant cells have chloroplasts, but animal cells do not.

Plant cells usually have one or more large vacuole(s), while animal cells have smaller vacuoles, if any are present.

Explanation:

Which two organisms would have more in common?


a.Two organisms who are in the same Family but a different Genus.


b.Two organisms who are in the same Phylum but a different Class.


c.Two organisms who are in the same Domain but a different Kingdom.


d.Two organisms who are in the same Genus but a different Species.

Answers

The answer your looking for is C

The two organisms that would have more in common is two organisms who are in the same Genus but a different Species. The correct option is D.

What is taxonomic category?

A taxonomic category is a rank or collection of species based on the fundamental traits, similarities, and differences among them.

The red fox, Vulpes vulpes, falls under the following key ranks: domain, kingdom, phylum, class, order, family, genus, and species. The eight main taxonomic ranks in the biological categorization scheme.

The naming, describing, and categorizing of living things are all part of taxonomy. In order to more effectively communicate biological information, it aids in the classification of species.

These names are significant because they enable clear communication about plant and animal species among people all around the world. Two organisms that belong to the same Genus but are of different Species are those that would have the most in common.

Thus, the correct option is D.

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offering 50 points whole Lab: Heredity and Punnett Squares plz help

Answers

I attached the answer, but you picture is empty.

Answer:

You don't have the question thought I don't know what your trying to do

Explanation:

How do humans cycle carbon from the biosphere to the atmosphere? (1 point)
by respiration
by driving cars that use gasoline for fuel
by eating plants
by planting vegetable crops

Answers

Answer:

Carbon is the chemical backbone of life on Earth. Carbon compounds regulate the Earth’s temperature, make up the food that sustains us, and provide energy that fuels our global economy.

Explanation:

Humans cycle carbon from the biosphere to the atmosphere by respiration, driving cars that use gasoline for fuel, eating plant parts, planting vegetable crops. So, all these processes are playing a major role in the carbon cycling by Humans.

What is Carbon Cycle?

The movement of carbon from the reservoir to reservoir is known as the carbon cycle. The carbon Cycle occurs through the atmosphere, oceans, and through living and dead organisms.

Humans during respiration inhale Oxygen and exhale Carbon-dioxide, vehicles also emit smoke consisting mainly of carbon, plants' bodies also contain a proportion of carbon.

Therefore, Humans cycle carbon from the biosphere to the atmosphere by respiration, driving cars that use gasoline for fuel, eating plant parts, planting vegetable crops. So, all these processes are playing a major role in the carbon cycling by Humans.

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Is 3600 calories too much for a 73 pound 4 foot 5 13 year old to gain muscle

Answers

Answer:

im guessing yea

Explanation:

rvkfinpej vnowefijpdcivnfvrd

Saturn's rings:

1.) are smaller than Jupiter's

2.) are made of ice and dust

3.) do not have any space between them

4.) can only be seen when the sun is behind the planet

Answers

i believe the answer is B

I NEED HELP PLSSSSSS:PPPPP

Answers

Answer:

Lake

Explanation:

Answer:

Explanation:

My answer is not working so I'm going to put it in the comments here is the link to the answer https://padl et.com/wolfsonglilly/ivaici3k4gqcrsdi

please help me as fast as possible. What should be added to this model to make it complete?

Answers

Answer:

Top consumer

Explanation:

Hey y'all I need help with this bio question: what are the pros and cons of different skin tones in different parts of the world?

Answers

Oh this one is so cool!

It basically all boils down to Vitamin D! We need this essential vitamin to help our body build hormones and regulate calcium. Our bodies make Vitamin D when we are exposed to the UV rays found in sunlight. But as we all know, too much sunlight isn’t good because these UV rays can harm us. Melanin (the chemical that our bodies produce to darken skin tone and hair color) provides protection from UV rays by absorbing them. However, this means that the more melanin that is produced by someone’s body results in less absorption of UV rays and a decrease in Vitamin D production. But for someone living around the equator or in the tropics that doesn’t matter because there’s lots of sun all the time. So for humans living in these areas where there’s lots of sunlight year round, it’s beneficial to have darker skin to protect from the harm of UV rays. People living in these areas still get plenty of Vitamin D though because of that year round sunshine.

Now what about those who’s skin has less melanin, such as those found in the higher latitudes? Well with less sunlight year round, their bodies had to adapt to be able to get enough Vitamin D. So less melanin is produced by the body in order to absorb the lesser amounts of UV rays to make Vitamin D. Lighter skin is, therefore, more beneficial the farther away you go from the tropics.

So essentially:
Pro of Darker Skin tones
-Protection from harmful UV rays

Con of Darker Skin tones
-Less absorption of UV rays and less production of Vitamin D

Pro of Lighter Skin tones
-Greater absorption of UV rays and more Vitamin D production

Con of Lighter Skin tones
-Less protection from harmful UV rays (resulting in sunburns and, in extreme cases, skin cancer)

This is of course the biology answer. The social impacts of different skin tones is a whole different story that you can ask in the history section.

What are the electron carriers in Cellular Respiration?

Answers

Answer:

There are two types of electron carriers that are particularly important in cellular respiration: NAD +start superscript, plus, end superscript (nicotinamide adenine dinucleotide, shown below) and FAD (flavin adenine dinucleotide). Chemical structures of NAD+ and NADH.

PLZZ HELP
Which of these are characteristics of bryophytes? (Select all that apply.)
can survive without water for long periods
lack leaves and stems
grow to be relatively tall
contain chlorophyll

Answers

Can survive without water for long periods

Lack leaves and stems

Answer: it’s D

Explanation:

15 facts about cells

Answers

Answer:

1. cells are very tiny

2. cells contain genetic material

3. prokaryotic cell are the earliest form of life

4. there are two types of cells

5. cells contain organelles

6.cells reproduce through different methods

7.cells can kill their self

8. similar cells form tissue

9.cells have varying life spands

10. there are more bacteria cells than human cells in the body.

11. cells provide structure to the body

12. cells convert nutrients to energy

13. cells carry out specialized functions

14.they were discovered by Robert Hooke

15 the largest cell in a human is the ovum

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